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Large Animal Emergency Rescue

Large Animal Emergency Rescue

Jun 11, 2018 | Large Animal Emergency Rescue

Tuesdays with Tony

My Docs love to have adventures on weekends. Normally it’s injuries that make for the most interesting stories, but this past weekend it was a sinkhole and a large animal emergency rescue. We have had a ton of rain so far this year in Florida. Combine that with some other factors, and sinkholes become a problem. This past Saturday a sinkhole opened up in a pasture where a blind patient of Springhill Equine lives, and she ended up in it. And that’s where my story begins.

The Situation

Springhill Equine Veterinary Clinic

Springhill Equine got the call very shortly after the owner found this poor girl in the sinkhole. Luckily, this was about a horse-sized hole, and it wasn’t terribly deep, as you can see.  After some questioning, it seemed she had, at most, been in there since morning (it was now late afternoon), and she was interested in food and water. She didn’t seem to have any injuries, and was mentally pretty OK about everything. This means the safest place for her to be was in the hole until help could arrive. Dr. Lacher told the owner to keep offering water and grain, keep her as calm as possible, and she was headed that way (as soon as she finished treating the colic she was at, because horses get together and plan emergencies). Dr. Lacher hung up the phone and called the University of Florida VETS team. This is like calling MacGyver out to your emergency. They get called when animals are stuck and need help getting unstuck. Like in a sinkhole, trailer accidents, swimming pool, or recently, a pug in a 30 foot hole. You get the idea.

I’ll just do this thing…

There’s a temptation when you see this horse is this hole to think “We can just dig that out.” Don’t. It seems like an easy solution, but it can make things a lot worse. First, in this situation the hole had just formed. The owner knows it wasn’t there as little as 18 hours before finding the horse. Bringing in a backhoe, or other heavy equipment, could have caused unsettled ground to unsettle more. Second, horses and large machinery don’t mix well. My not so humble advice: call my Docs, get their thoughts, then get them there before you do anything!

Technical Large Animal Emergency Rescue (TLAER)

TLAER is what the UF VETS team does. It’s the use of straps and pulleys, and A-frames, and all kinds of stuff to get live animals out of the crazy places they get themselves without further harming them. They say curiosity killed the cat, but I rather think that statement could include horses and cows. Back to TLAER. Training starts with classroom work on how animals respond to scary situations (Pro Tip: we usually go with either fight or flight, and sometimes both at the same time), concepts in leverage, and how to attach animals to said leverage devices safely. Animals, kind of like people, come in all different shapes and sizes. To get them out of tight quarters, straps and webbing are often used. There are safe places these straps can go without causing harm, and there are places they can go and cause tremendous pain and injury.

Part two of training involves practicing on model horses. Not model as in super model, model as in life-size plastic model. It takes a lot of practice to formulate a plan for how best to get the horse, or cow, or pug, out of wherever they’re stuck in the safest, most efficient manner. It also takes practice putting straps on, setting all the gear up and working as a team. This means there’s the initial training, and then there’s lots and lots of practicing so when it’s a real emergency the team is ready!

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Up and Out

The UF VETS team decided that for this mare, the best answer was to slide her out. This meant digging the hole out a little further so that a large heavy plastic mat could be placed next to her. Luckily, this wise girl took it like a champ. Dr. Lacher was standing by with sedation in case she got nervous about all the goings on. Next, the mat was put in the hole so that it was next to her, with another on the ground just outside the hole. Webbing was then placed around her just behind her front legs, and just in front on her hind legs. Again, this mare was amazing through the entire process! She let them place the webbing with reassurance from her owner that it was all OK. Once the webbing was placed, Dr. Lacher sedated her.

Springhill Equine Veterinary Clinic

The hope was that she would let us get this done with just sedation, but Dr. Lacher was ready with the knocked-out-all-the-way drugs if they were needed. While they were letting the sedation have a few minutes to kick in, the webbing was attached to a super cool block and tackle system which gave the humans enough leverage to pull the horse out without having to rely on heavy equipment. Sedation having kicked in, they gave hoisting the mare a try, but she wasn’t having it. Can’t say I blame her!!! So the knock-out drugs were given. Once she was asleep, she was hoisted up and out of the hole in about 5 minutes, and gently placed on the plastic mat on solid ground. An ATV was hooked up to this mat, and she was moved a safe distance away from the hole to wake up.

Springhill Equine Veterinary Clinic

Teamwork!

It’s hard for a cat to say teamwork makes the difference, but there you have it. This is an excellent example of a case where teamwork made all the difference. It took an amazing owner, a veterinarian, and an entire team of dedicated large animal emergency rescue folks to get this mare safely out of the hole. I teared up a little thinking about how they all worked together to make the world a better place for horses!

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Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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What is a Retained Placenta?

What is a Retained Placenta?

Jun 4, 2018 | Foaling

Tuesdays with Tony

   As I curled up in my usual spot on the seat of Dr. Vurgason’s truck Monday morning, I noticed a distinct, slightly unpleasant, yet oddly familiar odor. It was the scent of placenta. You see, Dr. Vurgason had been out the night before working on removing a retained placenta from a mare that had just given birth to an adorable foal. Curious, and slightly grossed out by the realization of what I was smelling, I started asking Dr. Vurgason all sorts of questions about mares and placentas.  Read on to learn why this is something you need to look out for during the immediate post-partum period.

When is a placenta “retained” and why does it matter?

    In normal mares, the placenta should pass on its own within 3 hours of the birth of the foal. This recommendation is based on the fact that at birth, the placenta begins to disintegrate almost immediately. That’s Springhill Equine Veterinary Clinicbecause the placenta begins to separate from the uterine lining right after birth, and blood flow through the placenta stops. When blood flow stops, a process called autolysis begins. The placenta becomes friable, turns a brownish-green color, and begins to smell quite unpleasant. In short, as soon as the foal is born, the placenta starts to die. Unfortunately, when you leave a dead, decaying, fluid-filled pile of placenta sitting in the uterus for several hours, you end up with a nasty infection.
   The mare’s post-partum uterus is basically a giant open wound. During this time, there is great opportunity for an infection within the uterus to enter the bloodstream and spread throughout the body. This is called septicemia, or sepsis. And, since horses will be horses, guess what septicemia leads to? You guessed it: laminitis. For this reason, mares with retained placentas will often be treated with broad-spectrum antibiotics, anti-inflammatory medications, and will need to wear ice boots until the threat of laminitis has passed.

Why does this happen?

   During a normal delivery, the weight of the foal will begin to pull on the placenta as the foal is born. The umbilical cord attaches to the foal on one end and to the placenta on the other. When the mare stands and the cord breaks, it also gives a good tug on the placenta at the same time. A normal delivery also includes uterine contractions after the foal is born in order to expel the rest of the placenta. This passing of the after-birth is actually considered Stage 3 of labor.
    A retained placenta usually happens for one of 2 reasons: either the mare’s uterus doesn’t contract enough, or it contracts too much. If the uterus doesn’t contract enough, or the uterine contractions aren’t strong enough to expel the heavy, blood-filled placenta, it will just sit there indefinitely. The other possibility is that the uterus contracted too much, and in the wrong places. A mare’s uterus is essentially Y-shaped. One arm of the Y would have been the pregnant horn of the uterus. The pregnant horn of the placenta is thin, stretched out, and covers a large surface area. The other arm of the Y would have been the non-pregnant horn of the uterus. The non-pregnant horn of the placenta is thick, narrow, and covers a relatively small surface area. Fun fact: the most common piece of placenta to be retained is the tip of the non-pregnant horn. Too much uterine contraction can actually cause the uterus to grab hold of the thick, narrow non-pregnant horn of the placenta, and refuse to let it go! You see, the attachment between the placenta and the uterus is kind of like Velcro. There are thousands of microscopic, finger-like projections called microvilli that hold the two layers together. Prolonged uterine contractions can in fact cause these microvilli to get stuck within the uterine lining, like a Chinese finger trap.

How do you get a retained placenta out? 

   I’m so glad you asked, because the technique I’m going to tell you about is super awesome! First of all, the one thing you DON’T want to do is pull on the placenta. In addition, nothing heavier than the weight of the placenta itself should ever be tied to the end of the hanging-out bits. Putting too much traction on the placenta can cause tearing, which leaves fragments of the placenta stuck inside. Even worse, pulling on the placenta can cause uterine prolapse or uterine artery tears, which are definitely life-threatening.
   The first thing to try is a single dose of oxytocin. Oxytocin induces strong, rhythmic uterine contractions for a short duration, aimed at pushing the placenta out from within. This takes care of those placentas that are retained because of the first scenario described above: the uterus didn’t contract enough. I’d say about 50% of the time, this works. The mare says, “oh yeah, I forgot about that part!” And out it plops. However, often when the mare has failed to pass her placenta after we gave her 3 hours to do so, there is a reason for it.
   So the next step is to call our docs, of course. But you already knew that. One of the methods they might employ to get that stubborn placenta out of there is called the Dutch Technique. In this procedure, the vet makes a small incision in the umbilical vein, just above where it broke away from the foal. Then, a tube is inserted into the vein headed toward the stuck placenta. The other end of this tube is attached to a water hose or pump, and water is steadily pumped into the blood vessel. What this does is distend the vessels throughout the placenta, causing it to separate from the lining of the uterus. After infusing several liters of water, we patiently wait 5 minutes. This part is hard…cats are not particularly patient. After 5 minutes, gentle traction is applied to the placenta. Then, if all goes well, out it plops! It is seriously the coolest thing to watch, trust me.
    Well, I hope you learned something from this wise old cat today! Now remember folks, don’t try this at home. Just call one of my docs the moment you suspect there may be a problem.
Until next week,
Tony

Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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Pregnant Mare Care

Pregnant Mare Care

May 29, 2018 | Breeding

Tuesdays with Tony

Pregnant Mare Care 

Congratulations! You’ve got a bouncy baby horse coming in about 11 months! In my experience watching the humans around here, it’s a very long 11 months. There are important things to do during that time to make sure the baby arrives happy and healthy. In my experience, humans are really good at getting the heartbeat ultrasound check at 30 days, but not so good at the rest of it. Read on for Tony’s words of equine wisdom regarding pregnant mare care.

Ultrasounds

These are just so freakin cool! You get to see that baby go from a black dot on the screen at 2 weeks to having a heart beat at 30 days. At the 60 day ultrasound there are legs and something resembling a head! They grow so fast. My Docs are checking way more than just the baby when they’re ultrasounding, though. They are also checking the entire uterus and ovaries to make sure they’re doing what they should.

The most important thing they are checking is where the cervix and placenta meets. This is where the outside world meets the uterus, and it’s where problems often start. My Docs will check to be sure the placenta is tight up against the cervix, along with measurements to be sure it’s not too thick. A thick placenta can be an indication of infection. If infection is spotted early, it can be easily treated with antibiotics. On young mares who don’t have a lot of exposure to other horses, ultrasounds should be done at 5, 7, and 9 months to check for infection. On older mares (over 12 years), problem mares, or mares who see lots of other horses all the time, the Docs recommend ultrasounds at 3, 5, 7, and 9 months.

Vaccinations

Rhinopneumonitis vaccines are super, super, super important for pregnant mares. Most humans call this a Pneumobort shot. Rhinopneumonitis is a Herpes virus. Herpes viruses are nasty little buggers. Once a horse has the virus, they’ve got it for life, and most horses are infected in their first year of life. The virus spends most of its time hibernating, but stress (I hear pregnancy is definitely stressful) can make it wake up. Frequent vaccinations keep the immune system on high alert for this virus. This means that if it does wake up, the immune system is right there to tackle it.

Rhinopneumonitis vaccines follow the same rules as ultrasounds. If your mare doesn’t meet new horses often, she can get a vaccine at 5, 7, and 9 months. If she is a social butterfly, she should get vaccinated an additional time at 3 months. This vaccine can be what my Docs call hot (horses often get a mild to moderate vaccine reaction from it). The Docs recommend some Bute beforehand to help reduce the reaction if you’re worried.

At around 10 months of pregnancy, your mare will need all her “regular” vaccines. For most mares this is Eastern and Western Encephalitis, Tetanus, Influenza, West Nile Virus, and Rabies. This makes sure the baby has great protection against these viruses when it gets here.

Deworming

Don’t. Ha! That was easy. Seriously though, see my numerous blogs on deworming. Watch an entire presentation by my Docs about deworming here: Deworming Seminar  Fecal egg counts and targeted deworming is the way to go. Don’t go deworming all willy nilly like you humans are prone to doing.

Nutrition

Don’t go crazy. Again, easy! Have your mare on a good feed. If she gets skinny easily, then a mare and foal feed may be necessary. If she’s an easy keeper, then good quality hay and a ration balancer may be all she needs. This is not the time to get her fat. It won’t make foaling easier on you or her.

Exercise

Yes. Of course they tell me that too, but I don’t like exercise, so I don’t. Pregnant mares can go out and do what they did before they were pregnant with a few guidelines in place.

  1. Don’t do more than you did before she was pregnant. If you went for 5 mile trail rides, great. Don’t sign up for the 50 mile endurance ride.
  2. Watch how hot she gets in the early stages of her pregnancy. Being really hot can be really, really bad for embryos younger than 90 days.
  3. Listen to your mare. At some point, later in her gestation, she’s going to tell you she doesn’t want to work anymore. Respect that.

Before you know it, 11 months will have flown by and you will be anxiously awaiting your foal. Spend the time wisely by thinking up perfect baby names, and keeping your mare up to date on all her prenatal care! Bring her into the Clinic for her happy mom check ups and I’ll even throw in a free CAT scan by yours truly.

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Springhill Equine Veterinary Clinic

Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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Horse Injuries, and How To Prevent Them

Horse Injuries, and How To Prevent Them

May 21, 2018 | Exercise, Injuries

Tuesdays with Tony

Horse Injuries

It rained around here a lot over the last week. It’s Florida, and almost summer. It’s what we do here. For the record, I’m going to state that I don’t like rain. Wet paws are not something I enjoy, but that’s not what I’m here to talk about. While it was raining here, I was watching (or attempting to watch) Justify run in the Preakness. Wow, was it raining!!! Also, while it was raining here, Dr. Lacher was showing her horses down in Venice, Florida, where it was also raining. Her event wasn’t nationally televised, so I couldn’t watch it (seems unreasonable, but she said it’s not nearly as exciting as the Preakness). However, she said she had some tough decisions to make about riding because of the rain, and the potential for horse injuries. That got me wondering: do horses hurt themselves in all that mud and slop? I mean, horses hurt themselves on sunny days, when the temperature is a lovely 72, and the wind is out of the east at 4 miles per hour. How can they not hurt themselves in the rain??

Springhill Equine Veterinary ClinicThe Short Answer: It Depends

Ah, that most-human of answers. Racehorses are running at top speeds, pushing the limits of how fast the equine skeleton was designed to go. However, they are running in mostly straight lines, and big curves. The tracks are also meticulously maintained, especially for a race as big as the Preakness. What that means is, yes, the horses may have to put in a bit more effort to overcome the wet track. Overall, though, you probably would have found the track to be quite good to run across, even in the chosen human running gear of sneakers and inappropriate shorts.

Events which require quick turns and changes of speed, like the jumping Dr. Lacher does, may have a different answer. The other major difference in pretty much any horse sport but racing is that the horses are going to be going over the same spot repeatedly. There should be serious thought put into how the footing will handle that, and if it can. If you are the last one to go before they drag the ring, what kind of damage has been done to the footing around the barrel, or the jump, or the obstacle? Horse factors should be considered as well. If your horse is young, or working on confidence, asking them to handle footing that is even a little challenging can be hard on the brain, if not the body.

Eventers are crazy and don’t even realize it’s raining, so we won’t talk about them. (Just kidding, eventers!) Same as everyone else who isn’t racing in the Preakness, I recommend you evaluate the track, and decide if it’s going to be OK. You humans have enormous brains. You should put them to good use.

Why rain matters less than you think

There are two kinds of injuries horses get: the wrong step/trip and something-tears kind, and the low-level repetitive strain kind. Guess which horse injury is more common? And guess which one is sometimes really disguised as the other? That’s right, repetitive strain is the real bad guy. Lots of times there’s a weak spot created by that repetitive strain that breaks when there’s a bad step or trip, so I’m counting that as a repetitive-use injury, too.

How to avoid injuries

Appropriate fitness is the answer. Just like people, horses need to be fit to do the job asked of them. Just like people, horses can get bored, bored, bored with the same old stuff. Know why CrossFit became a thing? Bo Jackson (if you’re under 40 you may need to Google him) got bored doing the same drills, and his injuries kept getting worse from doing those same drills over and over. He started incorporating strength and coordination exercises of all different types to keep him fit enough for baseball and football without the repetition. You can CrossFit your horse, too! It’s called dressage with your jumper, or jumping for your dressage horse. Team pen with your barrel horse. Take your reining horse to an obstacle challenge. The absolute best thing you can do for them is trail riding. I don’t mean the cat version of trail riding: a slow meander involving lots of naps. I mean a ride across terrain with a purpose. Ask them to collect downhill, push uphill, bend around trees. Take advantage of any training opportunity the terrain provides. While you’re busy enjoying nature, your horse will be working on coordination, strength, and balance without even realizing it. As an added bonus, the next time conditions are a little sloppy, your horse will be ready to deal with it.

Fitness is hard. Need help with a plan? Ask Dr. Lacher. She’s rehabbed not only client horses, but her own horses as well. Dr. Lacher seriously knows her stuff when it comes to fitness for equine athletes.

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Until next week,

~ Tony

Springhill Equine Veterinary Clinic

Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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Warmblood Fragile Foal Syndrome

Warmblood Fragile Foal Syndrome

May 14, 2018 | Breeding, Warmblood Fragile Foal Syndrome

Tuesdays with Tony

This week we’re going to talk about a tough topic: Warmblood Fragile Foal Syndrome. I apologize to those who enjoy my feline brand of sarcasm, but it will be largely missing this week. Even a cat can’t be snarky when it involves death, and Warmblood Fragile Foal Syndrome causes foals to die soon after birth, which is even worse.

What is Warmblood Fragile Foal Syndrome?

Springhill Equine Veterinary ClinicWarmblood Fragile Foal Syndrome (WFFS) is a point mutation in the PLOD1 gene. I’m going to get a wee bit nerdy here because I can’t help myself.  A point mutation means that in the DNA for this gene where a Guanine should be, there’s an Adenine. PLOD1 is responsible for helping raw collagen turn into something that can support all the stresses skin, tendon, ligaments, and blood vessels undergo every day. That single change from a G to an A means the skin can’t handle shear forces. That’s it: one letter. It can also be a cause of abortions in pregnant mares because of umbilical cord ruptures. The umbilical cord grows from the foal side of things, so if the foal has WFFS, the umbilical cord will be made with defective collagen. You know those bubbles you see in a water hose before it bursts? That’s what blood vessels made with defective collagen do. And once the umbilical cord bursts, the foal can’t survive.

I tell you, the more I learn, the more amazed I am that life even happens. There are so many places where one tiny little error makes the whole system fail.

How does my foal get it?

WFFS is an inherited genetic mutation, and specifically an autosomal recessive condition. Every foal gets one copy of genes from the sire, and one copy from the dam. For an autosomal recessive condition to cause problems, the foal has to get two copies of the gene. This is a good news/bad news scenario. It means that most foals won’t be affected with the syndrome. However, autosomal recessive is a great way to have a gene silently make its way into a population.  For example, let’s say we cross a mare that is A/G (this means she’s a carrier) with a stallion that is A/G (so he’s a carrier too). With this cross, there is a 25% chance we get a G/G foal (not a carrier and normal), 50% we get an A/G foal (normal but a carrier), and a 25% chance we get an A/A foal (fully affected). This means it is very, very important to know the status of your mare and stallion if you are breeding!

How do I test my horse?

First, if your horse is a gelding there is no reason to test unless you are curious. WFFS carrier status will NOT affect performance.

Ok, now that that’s out of the way. UC Davis and Etalon Diagnostics are the two places my Docs recommend. Many, many warmblood breeders are testing aggressively right now. This means there may be a wait to get your results, but both labs are trying to get results out as fast as they can. Both labs have submission forms on their websites. You will need to pull about 25 hairs, being sure to get the roots, and mail them in along with the submission form. That’s it.  

And if my horse is a carrier?

That depends on you. Responsible breeding would mean removing carrier horses from the gene pool by not breeding them. I do understand that’s easier said than done. At the very least, avoid breeding two carrier horses. As I said, many stallion owners are trying to determine the status of their horses. Hilltop Farm has done an excellent job getting information to mare owners. They have also said any mares bred to carrier stallions must have proof of non-carrier genetic status. This is a great start. It gives me hope for you humans.

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Until next week,

Tony

Springhill Equine Veterinary Clinic

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Tuesdays with Tony is the official blog of Tony the Clinic Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. If you liked this blog, please subscribe below, and share it with your friends on social media! For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

Navicular Disease

Navicular Disease

May 7, 2018 | Lameness, navicular disease

Tuesdays with Tony

It’s definitely busy season here at the clinic! All the breeding work and new foal checks on top of my usual bread & butter makes for one exhausted office cat. But I’d hate to disappoint my adoring fans, so I will postpone my cat nap long enough to shower you all with some new information on an old problem called Navicular disease.

 

What is a “navicular”?

     Kinda sounds like one of the pieces you make sure you take out of your Thanksgiving turkey before eating it, right? Well, in fact, the navicular is a small bone in your horse’s foot at the back of the coffin joint. It is technically a sesamoid bone, meaning it is not one of the main weight-bearing bones in a joint. Despite this, navicular bones play a huge role in the physiology of how a horse’s foot bears weight.
      Navicular disease syndrome describes a problem with the navicular bone plus or minus any of the structures it connects to. You see, the location of the navicular bone smack in the middle of the hoof makes this tiny bone extremely significant. The navicular bone is in contact with the coffin joint, the navicular bursa, the coffin bone, the short pastern bone, the navicular impar ligament, the deep digital flexor tendon, and the digital cushion. This is why navicular disease can go south so quickly!

How is Navicular disease diagnosed?

      Navicular disease usually manifests itself as forelimb lameness. The lameness may be mild or intermittent at first, and it may be difficult to tell which front foot is lame. The classic feature of navicular disease is that it is almost always bilateral (affecting both front feet). If your horse’s lame foot is blocked (numbed with local anesthesia), and the lameness switches to the other foot, a diagnosis of navicular disease is high on the list.
     X-rays of the front feet are needed to confirm this diagnosis and to get an idea of the severity of your horse’s condition. This is when I get to sit back and watch the docs and techs try to make your horse do circus tricks in order to get some fancy X-ray views. First, they need the horse to put both front feet up on these little wooden blocks. Next, they get the horse to stand on a tunnel with the X-ray plate in it. Then they ask the horse to stand with one leg forward and one leg back while they crouch under the horse’s belly and point the machine at the horse’s heel. Let me tell you, it looks absolutely ridiculous, and is hilarious to watch.
    While X-rays can give the docs a lot of information about the navicular bone itself, MRI is required to fully evaluate the soft tissue structures involved. If it’s in the budget, we would strongly recommend an MRI if your horse is diagnosed with Navicular disease.

Can Navicular disease be treated? 

     Yes! While navicular disease is a degenerative condition, this diagnosis is certainly not a death sentence for your horse when it is identified in its early stages. Certain breeds, such as Quarter horses and Paints, are more likely to develop the condition than others. If you own one of these horses and notice any forelimb lameness, or if your farrier tells you that your horse is painful across his heels, have him evaluated by a vet ASAP!
     Corrective shoeing is the cornerstone of treatment for navicular disease. Wedge pads will take some pressure off the heels, where the navicular structures are, and redistribute the weight to his toe. Any decent farrier should be able to handle applying wedge pads, but make sure he or she gets a chance to look at your horse’s X-rays to determine what degree of wedge your horse needs. If you have a stellar farrier who is adept at corrective shoeing projects, he may try a therapeutic shoe with a built-in wedge (bars that are thicker at the heel than at the toe), and/or other modifications to suit your horse’s individual needs.
     The corrective farriery is essential to managing a horse with navicular disease, but it’s not always enough by itself. Your vet may prescribe anti-inflammatory medications to give your horse long-term in order to maintain his comfort. Equioxx is commonly employed in these cases because it boasts far fewer negative GI side effects compared to Bute or Banamine. Joint injections are another way to decrease the inflammation associated with navicular disease. Going back to our anatomy lesson from earlier, injections into either the coffin joint or the navicular bursa may help your horse, as the navicular bone borders both of these structures.

A word about OsPhos

    The new kid on the block as far as treating navicular disease goes is a drug called OsPhos. This medication is definitely in vogue right now, especially in the Quarter Horse world, but does it really work? Well, lucky for you, I like to be a well-educated cat, so I did some research on the subject.
     OsPhos has been shown in vitro (that means in a Petri dish in the lab) to reduce osteoclast activity. Osteoclasts are cells that break down bone. One of the primary features of navicular disease is that the navicular bone essentially disintegrates over time (a severely diseased navicular bone will look like a slice of Swiss cheese). Ok, so this sounds like a no-brainer, right? The navicular bone is breaking down, so let’s give a drug that inhibits bone breakdown to stop progression of the disease.
    Well, there are 2 little problems with OsPhos. Remember that whole Petri dish thing? Well, just because we know a drug works in a lab means nada when it comes to how that drug will work when injected into a horse’s body. The medication has been approved by the FDA so we know it is relatively safe for horses, but how well it works at actually treating navicular disease is anybody’s guess.
    The second problem is a recently-recognized side-effect, which we all should have expected when you think about it. It has been suggested (by some very smart veterinarians) that OsPhos inhibits bone healing. This makes sense, because in addition to eating away at diseased navicular bones, osteoclasts actually have an important role in bone healing in a healthy horse. If your horse were to fracture a bone, osteoclasts would get to work right away cleaning up the shattered fragments and making way for osteoblasts (bone-making cells) to lay down new bone. Well, if your horse is in work, and his bones are under stress, they are essentially sustaining millions of micro-fractures all the time. In a normal horse, this would be no big deal. Osteoclasts would swoop in, clean up the damaged bone, and it would be replaced by new bone, which would be even stronger than before. But, in a horse that has been treated with OsPhos, those osteoclasts are inhibited, the damaged bone doesn’t get cleaned up, the new bone can’t be laid down, and the bone is left weaker than before.
     If you’ve followed my cat-splaining this long, good for you! If not, don’t worry, just trust my vets. Here’s their two cents: OsPhos is worth a try in horses with a definitive diagnosis of navicular disease. However, if one treatment doesn’t do the trick, it’s probably not a good idea to give this medication repeatedly. OsPhos is definitely not a lameness cure-all, and it doesn’t make sense to use it in horses to treat anything other than navicular disease.
   Well, I sure hope I still have time to get my nap in! Tomorrow’s another day full of foals, mares, and stallions. I need to be alert to manage my minions as they run around like chickens with their heads cut off.
    See you next week!
           -Tony

Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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Foaling and Due Dates

Foaling and Due Dates

Apr 30, 2018 | Foaling, Foals

Tuesdays with Tony

Foaling and Due Dates

We had a foal on Monday. The humans went all gaga over it. I was more like, “Hey, can a cat get some attention over here?” I guess she’s cute. There is some debate over what color she is. Even odds right now on buckskin vs. bay. What’s really exciting about this foal is that she’s finally here. May, the mom,  went 378 days from ovulation to foaling. That’s way over the normal gestation of 340 days, but mares are mares and will do what they please, including ignoring due dates. And on that note, let’s talk about why it was okay that May went 378 days, and why that’s often better than foaling too soon.

Let’s talk placentas

Horses have what’s known as diffuse placentation. When you look at a horse placenta, it looks almost like velvet (red, gooey velvet, but velvety nonetheless). That velvet forms a connection at a microscopic level with mom’s blood vessels. Humans do sort of the same thing, but only in one spot on the placenta. Cows make these connections in a bunch of big knots called cotyledons. This matters because horses need every bit of the placental connection they’ve got to grow that big ol’ foal in there. It’s why twins in horses are usually a bad idea. Where the twins touch, there’s no connection to mom, which means not enough nutrition to grow into a healthy, happy foal.

When placentas go bad

It goes without saying (but I’m going to say it anyway) that bacteria in the uterus with a baby is bad. The cervix does its part to keep the outside out, and the immune system works hard to keep things from the blood stream out of the placenta. However, life being what it is, sometimes stuff happens. In this case that thing is called placentitis. Placentitis occurs when bacteria get into a pregnant uterus and start attacking the placenta. The most common place for this to happen is at the cervix. In some ways, that’s a good thing.

My Docs recommend ultrasound exams throughout those long 11 months (or sometimes 12 months +) of pregnancy. One of the things they are evaluating is the placenta at the cervix. They know it should normally measure less than 1cm and should be tight against the cervix. If they see anything even a little bit off they can start treatment right away. My Docs ultrasounded May at 5, 7, and 9 months gestation and everything was good, so placentitis was unlikely. To be fair, May got ultrasounded a few more times when she started going past her due date, but that’s because the Docs wanted to be doubly and triply sure. And who doesn’t get a little antsy waiting 378 days for a foal???

Uh Oh! There’s an udder!

To be honest though, the Docs weren’t worried about May because her udder wasn’t growing. The udder is an excellent way to tell how the foal/uterus/placenta are doing. Udders should start developing around Day 330 of gestation. If the udder is growing any sooner than that, Call My Docs IMMEDIATELY. Was I clear enough there? Milk coming in before day 330 is not good!!!

May’s udder showed absolutely no changes until about 10 days ago. It then grew at glacial speeds, despite twice daily checks from the techs, Docs, and everyone else around here. (Glacial means really, really slow, for all you native Floridians who avoid all things cold-weather related.)

Antibiotics to the rescue

It’s 290 days of gestation for your mare, every check-up until now has been normal, but suddenly this morning she has a huge udder and you can express milk. My Docs ultrasound her and find some separation of the placenta at the cervix. What now? Antibiotics! And Regumate, and Banamine. But mostly antibiotics. The good news about placentitis is we can generally get it treated with SMZ antibiotics. A little Regumate is added in to quiet the uterus down, and Banamine reduces inflammation. The sooner placentitis is caught, the better the chances things will go well.

May’s placenta was normal, her cervix was tight, and she had no udder. That means no placentitis. My Docs did a couple extra things to make sure everything was OK in there. They did a serum amyloid A test. This looks for inflammation from infection. May’s was normal. They also used the ultrasound from outside that enormous belly to be sure the foal was moving. She was. That left my impatient humans with sitting and waiting. Which they did very, very reluctantly. Lo and behold, we had milk early on Monday morning with a pH of 6.2 (read here about why that’s important), and later in the morning we had a bouncing baby girl!

foal due date

Can’t you induce like they do in humans?

NO!! is the definitive, emphatic answer. Foals develop their lungs in the last 36 hours of gestation. We don’t have a way to know when that is. Take May as an example: if she had been induced at day 340 of gestation (her technical due date), her baby would have still needed 36 days more for her lungs to mature. I may be a cat, but I’m guessing no lungs doesn’t go well with the outside world.

As I said earlier, mares are mares and they will do as they please. It’s a philosophy I can really get behind. Got questions about your mare or due dates? Want to breed? Go check out my blog page for tons of wisdom. Want the wisdom every week? Scroll down a little farther and subscribe to my blog. So easy, even a human can do it!

Until next week,

~ Tony

Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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Recognizing Pain in Horses

Recognizing Pain in Horses

Apr 23, 2018 | Pain

Tuesdays with Tony

Recognizing Pain in Horses: The Telltale Signs

If I’ve heard it once, I’ve heard it a thousand times: “Gee doc, your job must be so hard, because you can’t tell when your patient is hurting.” But the truth is, our docs use non-verbal signs to tell when a horse is in pain, and after years of practice they have become quite proficient at recognizing when something is wrong. So, how do horses “tell us” when they are in pain?

Lameness

It may seem obvious, but limping is a sign of pain. The source of that pain can be anywhere from the tip of the toe to the shoulder/hip. The docs have a wide array of tools to determine where exactly the pain is coming from, but that’s a topic for another day.

Horses don’t “fake” lameness to get out of work. They are prey animals, so if anything, they will try to hide a limp when their adrenaline kicks in. Horses that are “sometimes a little off” or horses that “work out of it” are also in pain. I will add here that Bute is a powerful pain-killer. If your horse is “sound on Bute” but lame when off of Bute, he has an underlying source of pain somewhere.

Vets go through rigorous training during school in order to be able to see a subtle lameness. Both of my docs also happen to be experienced horsewomen, so they also understand what lameness feels like under saddle. However, during a lameness evaluation, they are looking for signs such as a head bob, hip hike, fetlock drop, or shortening of stride to tell them where a horse is hurting.

Heart Rate

One reliable indicator of pain that vets use on a daily basis is heart rate. In human medicine, a doctor may ask you to rate your pain on a scale of 1-10. Well, vets can’t do that in horses. But they can measure their heart rate and monitor whether it goes down with various treatments.

You can easily learn how to take your horse’s heart rate at home. Get yourself a stethoscope (it doesn’t have to be fancy). Locate the horse’s heartbeat just behind the left elbow. Look at your watch and count the number of beats in 15 seconds, then multiply by 4. This gives you the horse’s heart rate in beats per minute. The normal resting heart rate in a horse is about 30-40 beats per minute.

Some horses are very stoic. They may not show any overt signs of pain until they are near death. Certain breeds such as Walking horses, Draft breeds, Mules, Standardbreds, and some Quarter horses can be very stoic when it comes to pain. In these horses, it is very useful to get a quick heart rate measurement to assess their current comfort level.

Pain in horse expressionFacial Expression

Have you heard the phrase “I can see it in his eyes” when referring to a horse in pain? Well there is actually some truth to this theory, and it has even been empirically studied. Horses have a characteristic grimace that they often exhibit when they are in severe pain. You may have seen it if you have ever had a horse suffering from colic, laminitis, or a major injury.

When horses are in pain, their ears tilt back, their nostrils scrunch up at the corners, and they elevate their eyebrow muscles. There is a subtle distinction between a pain expression and an angry or worried expression. Our docs are all too familiar with the pain face, and can recognize it quickly, then get busy looking for the source of the pain.

If you think your horse looks like he is in pain, give him a good once-over. Is he “pointing” one forelimb in front of the other- a common sign of foot pain? Is he “flank-watching” or looking at his sides- a common sign of colic? Is he squinting one eye more than the other? If you’re not sure where the pain is coming from, give me a call at the clinic and I will get my experts involved!

The Silent Treatment

Animals certainly do feel pain. Just because they aren’t screaming and kicking like a human doesn’t mean they are not hurting. Even dogs and cats like me are rarely vocal when they are in pain. We use meows, hisses, barks, and growls to communicate other emotions, but not pain. I am more likely to slink off into a corner if I’m hurt than to come crying to a human.

Horses will almost always suffer in silence. For this reason, it is important to have a vet who can recognize and interpret their silent cries for help. It is also important to listen to your veterinarian’s recommendations regarding pain management. Sometimes the best option for easing your horse’s suffering may be humane euthanasia. But rest assured, our docs always have the best interests of your horse in mind.

Hopefully after writing this I’ll begin to hear a different comment from horse owners: “Gee doc, your job isn’t hard because you can’t tell when your patient is hurting. Your job is hard because you have to convince me that my horse is hurting.” Hey, a cat can hope, right?

Until next week,

~ Tony

 

Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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Ground Manners Matter!

Ground Manners Matter!

Apr 17, 2018 | Behavior, Safety

Tuesdays with Tony

Ground Manners Matter!

Cats are the perfect killing machine. Look at my sleek physique, my taut muscles, and my powers of concentration. My reflexes are a thing of legend. They aren’t cat-like, they’re Original Cat. Being a predator animal means I take a surprise well, unlike a horse. Despite many, many conversations with the horses that come through the Clinic here at Springhill Equine, I still don’t understand how a falling leaf can be confused with a fire-breathing dragon. Yet every horse explains to me that it could happen, and they need to be prepared! Being prepared for the sudden appearance of dragons can make veterinary care difficult. Read on to learn how to ward off dragons! Spoiler Alert, I have included some graphic pictures of what happens when horses confuse humans for horse-eating tigers.

Save the Toes

Ground mannersToes are perfectly positioned on the end of the human foot to make an excellent target for the equine foot. Add to that the unique ability of the horse to leap up into the air and land with a hoof wherever a human foot happens to be. This ability is compounded by a unique choice in human footwear known as a flip-flop. I’m not sure why you humans even wear these things. You may as well go barefoot. Needless to say, the flip-flop offers no protection to those toes, and shouldn’t be worn around horses. You can also help keep your toes alive by ensuring your horse is respectful on the ground. Training your horse to do the basic showmanship maneuvers will teach them to move away from you, rather than onto you. Pro-tip: your veterinarian will also appreciate it if your horse happily walks and jogs on a lead, and has decent ground manners!

I have included this picture of a toe to reinforce your showmanship work, and proper shoe selection.

A Sedated Horse Can Still Kick

Ground mannersMy Docs often have to do things to horses which said horse doesn’t appreciate very much. The Docs will often use powerful sedatives to help your horse agree that this is something they can do. You will notice that even when your horse is sedated, my Docs still act like they could get kicked. Sedated horses are still very able to kick. They’re less likely to, but they certainly still can, and with surprising speed. Super fun part about sedated horses: they don’t give you any warning before they kick. This means for some procedures, in some locations (especially lower legs, and back legs) my Docs may elect to fully anesthetize your horse. Most of the time the anesthesia lasts for about 20-30 minutes, and then they slowly wake up. This gives the Docs time to fully evaluate and repair a laceration, for example.

How can you help? Always be aware of where you are in relation to the feet. If you’re helping hold for one of my Docs, pay very close attention to how your horse is standing. If you notice anything to indicate a kick is coming, feel free to speak up loudly and quickly!

For this one, I included a lovely kick to a thigh by a very sedated horse during a sheath cleaning.

Needles are your friend

I’m going to start with this lovely picture here:

This was done by a horse who overreacted a wee bit to a needle. I mean seriously, it was a little tiny needle. For the record, this isn’t one of my Docs, but it is a veterinarian. This is why we take needle shyness very, very seriously. When giving shots in the neck, or drawing blood, my Docs are standing in the perfect place to get pawed (that’s what happened in the picture). This is why we bribe horses.

You may have noticed my Docs and their amazing techs feeding your horse treats, and using a clicker. This is to help desensitize them to the stick of a needle. You can definitely help your horse be prepared for needles with a little training! Any one of my minions can show you how to start the process, but basically it involves teaching your horse to tolerate the feeling of the “stick.” This is usually done by gently pinching the skin in the area where the shot will be given, and offering a food reward when they relax. The pressure of the pinch is increased until your horse is pretty sure it’s no big deal.

It’s important to remember that horses are really big, move really fast, and can hurt humans (and cats) really badly. I know what you’re thinking: My horse would never do that! Maybe, and maybe not, but a little bit of training before an accident happens, and a whole lot of paying very close attention to them can go a long way. At the end of the day, it’s all about getting the horses taken care, and getting the humans home safe!

Have you subscribed to my blog? If you say no, that’s the wrong answer. You can easily fix this wrong answer by scrolling down a little farther to the subscribe button.  So easy, even a human can do it. HAHAHA!!!!

Until next week ~

Tony

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Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

The Facts on Strangles

The Facts on Strangles

Apr 10, 2018 | Strangles

Tuesdays with Tony

Let’s continue this little vaccine tour. I know I’m enjoying it! This week, let’s talk Strangles. With a name like Strangles, how can it not be fascinating?

What is Strangles?

Strangles is caused by a bacteria in the streptococcus family. Other fun things caused by this family: Strep throat, MRSA, and pneumonia. Family reunions must be an unbelievably good time! To be honest though, the bacteria are only part of the problem. The immune system is the other part. The immune system likes to respond with tons of white blood cells (this reads as ‘pus’ to us normal people), and those white blood cells turn into abscesses.  Those abscesses are where the real fun begins.

Snot, lots of snot

If your horse gets Strangles, snot is what you have to look forward to. Lots of snot and a high fever (103F, or even higher) are often the first signs of Strangles. From there, lymph nodes start swelling, abscessing, and often popping open on their own. It’s pretty awful. Those lymph nodes swelling is where Strangles gets its charming name. If they swell and don’t rupture open, they can cause enough constriction of the throat to cut off that airway. Luckily, with my Docs around, you don’t have to worry about that. The swelling of the lymph nodes and the extreme amounts of snot do help distinguish Strangles from the other fun upper respiratory diseases of Rhinopneumonitis and Influenza. Typically those last two have fevers, some snot, and some lymph node swelling, but nowhere near the levels Strangles produces. These clues, and a culture of the snot, help my Docs diagnose a case of Strangles.

What now??

Once the Docs have a positive diagnosis for Strangles a few things happen:

  • It gets reported to the State of Florida.
    • In Florida, Strangles is what’s known as a Reportable Disease. If my Docs even suspect it, they have to tell the State. Once it’s confirmed, the property is placed under a quarantine
  • You start practicing biosecurity.
    • The infected horses go someplace a minimum of 21 feet from other horses
    • Infected horses get taken care of last
    • You go through a lot of bleach, because everything gets bleached, every day
  • Infected horses get closely monitored
    • If they have trouble breathing, the Docs will see if they can open lymph nodes to drain
    • They may need soft food if they are having trouble swallowing.

Horse Strangles swollen lymph nodes

To give or not to give…The Antibiotic Debate

Horse people: Two people, three opinions. That’s true here, too. Generally, my Docs monitor Strangles horses to see how they are doing. If they are handling things OK, then they hold off on antibiotics. If they aren’t eating well, or they are getting so much swelling they are having trouble breathing, they will then give antibiotics.

There’s an Old Wives Tale that antibiotics will cause what’s known as Bastard Strangles. This is the term of affection given to Strangles abscesses that form in lymph nodes outside the throat. Most commonly these abscesses form in the abdomen and are a royal pain in the you know where. No research has shown that antibiotics cause Bastard Strangles. The truth is, no one knows why Bastard Strangles happens. Horses who don’t eat well take longer to get over any illness, and Strangles is no exception. So, my Docs will use whatever treatments they can to help these horses feel better, faster.

There’s a vaccine, right?

Horses that have been vaccinated for Strangles….. may develop milder signs of upper respiratory tract infection. – ACVIM White Paper on Strangles.

That’s a direct quote from the super-smart Medicine Specialty Veterinary group. Now, I don’t know about you, but that doesn’t sound like a ringing endorsement of the vaccine. Turns out the vaccine for Strangles may help, but that’s about it. This vaccine can also have some pretty serious side effects. For example, if your horse has been exposed to Strangles, the vaccine may cause something called Purpura Hemorrhagica. This is a super-fun side effect where the body attacks the blood vessels. In horses, it often leads to laminitis as well, since that’s pretty much how horse feet respond to anything serious.

Moral of the vaccine story: there are very specific circumstances where this vaccine is helpful. For example, young (think yearlings and 2 year olds) horses who will be going to large sales. These horses are exposed to a ton of other horses, under stressful circumstances, after shipping. That’s a recipe for infections. Think about humans and airplanes. The average show horse doesn’t experience these same levels of stress, and they have a more mature immune system.

This is a case of ‘just because there is a vaccine doesn’t mean every horse should have it.’ Make a plan with my super-smart Docs for your horse, and your lifestyle.

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Until next week ~

Tony

Tuesdays with Tony is the official blog of Tony the Office Cat at Springhill Equine Veterinary Clinic in Newberry, Florida. For more information, please call us at (352) 472-1620, visit our website at SpringhillEquine.com, or follow us on Facebook!

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