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EMM/Chiro for Horses

EMM/Chiro for Horses

Oct 3, 2022 | Chiro, Equine Medical Manipulation (EMM)

Tuesdays with Tony

As the Springhill Clinic Cat (i.e. an Intellectual), my day involves sleeping, eating, and monitoring my minions, but a lot of horses have physical jobs to do. Joint problems can really get in the way of that stick jumping, barrel turning, or trail rambling stuff. When joints malfunction, the neurological balance is affected, causing pain, muscle tension and restricted joint motion. None of that is good for your horse’s ability to do his job.

My Docs are great at keeping horses healthy, and they’ve got all sorts of ways to do it. One of my Springhill Docs is always going around bending horses in weird ways….and what’s weirder is they seem to like it. What’s up with this purr-plexing treatment? Well, you’d call it chiropractic if it was being done on a human. In Europe, you might hear it called Veterinary Physiotherapy. For horses in the US, we call it Equine Medical Manipulation (EMM). Same thing, basically. Whatever you call it, the goal is to improve the mobility and function of the joints, reduce pain, and ease muscle tension.

What Happens During a Session?

Since my Doc is, well, a Doc, she’ll do a thorough exam of your horse. She’ll look at his posture and how he moves, then do a whole lot of poking and prodding to feel his joints through their range of motion. She’ll feel for muscles that are tight and check your horse’s flexibility. She can tell from all that what joints aren’t working like they should, and then she’ll perform specific adjustments to improve them.

Horses usually get more and more relaxed as it goes on, and most will show their approval during the adjustment. They may lick and chew, take deep breaths, or shake their head around after a particularly good release of tension. I think the horses should just try purring, but my Doc says they don’t know how, and the licking is just as good. Anyway, the horses look like they really like the adjustment. I tried to get the Doc to give me an adjustment by weaving around her ankles, but she doesn’t seem to get my message.

What Does it Treat?

EMM treatment doesn’t replace traditional veterinary medicine, but it gives my Doc an additional way to diagnose and treat a variety of musculoskeletal problems. Here are some things it’s useful for:

  • Treating chronic musculoskeletal problems
  • Treating acute problems such as tension or stiffness
  • Maintaining fitness and performance, whether your horse is a sport horse or a weekend warrior
  • Maintaining comfort in older horses

The number of EMM sessions your horse needs depends on the condition being treated, how long the problem has been going on, and his age. Conditions that have been going on for a long time usually require more sessions and newer conditions can require fewer sessions.

Mythbusters!

Let’s talk about some misconceptions that get my fur in a knot!

  • The bones aren’t “out”. You’ve got to be kitten me! Can you see the bone sticking out of the horse? (If yes, you have a whole other problem) If not, the bone is not out. It’s still in! So, let’s stop saying things like that. My Doc will talk about “restrictions”, she won’t say things like “his hip is out”. What really happens is that reduced joint mobility causes negative effects on the joint itself, the nervous system, and the muscles and tendons surrounding the joint. These things lead to your horse having pain, abnormal posture, or poorly coordinated movement.
  • They’re not cracking Cracking would actually be really bad! What my Doc does is clear the restrictions around a “motion unit”, which is the bones of the joint and the soft tissues that surround them. That means she does a manipulation to help the bones, muscles, and other stuff move the way they are supposed to. Sometimes, you hear an audible sound when air pressure in the joint is released.
  • You don’t need a lot of force to adjust a horse. It shouldn’t look dramatic. In fact, good adjustments look kinda boring. Like, the horse is usually falling asleep by the end of it, and I’d be ready for a cat nap too. The adjustments are called high velocity, low amplitude, which means they are quick and precise, not rough. They are done in a very specific location at a specific angle. It takes a lot of training to learn this. You should be careful who you hire to adjust your horse.

Would EMM Be Good for Your Horse?

So how do you know if your horse could benefit from EMM? Horses can show lots of signs that indicate pain or discomfort. Deep breath, and here we go…. reduced performance, incoordination or uneven gait, poor attitude, tense muscles, abnormal posture, pinning the ears when saddled or mounted, hollowing the back, swishing the tail, behavior changes, sensitivity to touch, stiffness when bending, muscle wasting, decreased stride length, difficulty engaging the hindquarters, pulling against one rein, lack of flexibility, trouble flexing the poll, difficulty with collected gaits, lateral movements, or turning, and bucking. Wow, that’s a long list. How annoying.

My Doc tells me that unlike us cats (superior beings), horses don’t usually act like jerks just for fun – they’re not that creative. Sometimes they just hurt and don’t know how to tell us. When they act up, there’s usually a reason. It may be a training issue, but pretty frequently bad behavior is due to pain or discomfort.

One really common thing my Doc sees is tension lines in the neck. Horses should have smooth necks, even really well-muscled horses. If your horse’s neck has creases in the muscle, that’s a sign of a serious muscle spasm!

If you see any of those issues, it’s definitely time to call the Clinic. But the best thing for your horse is to have him checked out before there’s a major problem. It’s always better to keep him comfortable and working well than to wait until issues arise!

Until next week,

~Tony

P.S. Do you know about Spa Day at Springhill? You can drop your horse off here at the Clinic, and she’ll get EMM, acupuncture, and an FES session. She might even get her nails painted (no promises, but it has happened!). We recommend that you go get a massage and a petticure while you wait. Then you can pick her up and enjoy the both of you being calm and relaxed. At least for a little while tongue-out Call me to schedule it at 352-472-1620.

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!

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Neuro Behavior in Horses

Neuro Behavior in Horses

Sep 26, 2022 | Neuro Behavior

Tuesdays with Tony

Being a Clinic Cat will make you a bit paranoid. I spend a lot of time seeing not-normal horses, and only a small slice of my day seeing normal horses. The hardest not-normal horses we see are the ones my Docs call neurologic. My understanding of the word neurologic is that the connection from the brain to the body parts isn’t working correctly. This can come in many forms, from none of the legs working, to tripping when walking downhill. Let’s talk about how my Docs figure out if your horse is neurologic vs. lame, and what they do about it!

The Nervous System Superhighway

Let’s start with how the system works. (If you’re a neurologist, yes, I know I simplified things a bit. I’m a cat [superior being] explaining things to humans [inferior beings]) Okay: your horse looks at a flake of hay on the ground and thinks, “I’d like to eat that.” The brain sends a signal down the spinal cord to the limbs to say “Move forward towards the delicious food.” There’s another signal that says, “Put your head down so you can reach the food,” and yet another group that instructs the mouth on how best to move the food from the outside to the inside. 

All of this happens via nerves coming out of the brain and talking to other nerves in the spinal cord who send the signal on to the proper part of the body. Honestly, it’s a miracle any of this works on any of us. You can see how there’s ample opportunity for this entire system to go wrong at so many different places. It can go wrong at the brain, at the nerve going to the spinal cord, in the spinal cord, in the one that goes from the spinal cord to the body part, and all the places where there’s a connection between all those things. Like I said, it’s amazing it works at all. 

The Brain

This is going to be a short section. When the brain is the problem, you know. In rare cases like brain tumors, it may start subtle, but within a very short time (think days, not weeks) it’s obvious there’s something very not right with the brain. The more common way my Docs see the brain as the problem are with viruses like Eastern Encephalitis and West Nile virus. These horses have no idea where they are or what they’re doing. It’s awful. Vaccinate your horses for these diseases. Anyway, you know when the brain is the problem. It’s bad. End of section.

The Rest of the System

This is where things get harder. One of the hardest questions my Docs have to answer is, “Is it lame or is it neurologic?” When you have a critter who can’t answer questions, this can be very difficult to determine. If you went to the doctor, they would ask you questions about walking up and down stairs, can you feel it when I poke here, close your eyes and do this task, etc. All of these things help determine if you as a human have a neurologic component to your problem. They can also then do things like x-ray or MRI of your spine, but more on that later. 

My Docs have to come up with all sorts of different tests to ask horses those same questions. A few examples are walking over poles, walking up and down hills, walking with the head up or down, and turning fast. These all set up conditions where the signal has to smoothly and quickly travel from the brain to the body part. Based on responses to these tests, my Docs then work to determine if this a nerve (roadway) problem, or maybe a connection (stoplight) problem, or is it a problem at the destination (the parking lot). Usually it’s the roadway, so my Docs generally start there. 

Springhill Equine Veterinary Clinic

The Roadway and its Issues

The spinal cord in a horse is pretty dang long. It goes from the ears to the tail. That’s a lot of real estate to have problems with. The most common issue my Docs see is arthritis of the joints that make up the bones of the spinal column. The problem is the nerves have to come from the spinal cord out into the body to carry the signal. This means they have to travel through the bones at strategic points. Those strategic points can get cut off by arthritis causing bony growth to close the hole. In the early stages, this can be tripping, having trouble doing movements like lateral work or transitions, and can even show up as a lameness. There may be good days and bad days, making it difficult on you humans to determine if it’s even real. It can also make it tough for my Docs to see since it may not be happening on the day they’re looking at your horse. Being patient and allowing repeat evaluations is key to figuring out these horses. 

If my Docs are suspicious of a neurological issue based on talking with you and evaluating your horse, they will likely suggest x-rays and ultrasound of the neck, and maybe moving on down the back. This will largely depend on how your horse is showing neurological symptoms. Here’s where things get tricky. Horses are really big. If you want to know what my back looks like, you can plop this entire cat in an MRI or CT scanner and have a very thorough picture of what it all looks like. You will also have a sleepy cat, because you’re going to have to give me some drugs to get that done. No such luck with horses. 

CT can now be done on most of the neck, MRI can be done on the head and some of the neck, but get down low and on into the back and it’s a no-go zone. First off, horses have to be able to fit inside the CT or MRI scanner. It’s basically a donut they have to go through. You need a really, really big donut hole to get an entire horse through, especially when you factor in those long skinny legs. Once you make the donut hole big enough, you can’t beam the signal all the way across the hole, so you can’t make an image of everything. Physics is the problem, and there’s very little you humans can do to overcome the Laws of Physics. This means there may be lots of combining x-rays and ultrasound to attempt to determine what the 3D structure of the back looks like. There’s also likely to be lots of testing of movement and head scratching on the way to a diagnosis. As you’re realizing, it’s not an easy or straightforward process.

Treatment

I’m being a less-than-upbeat cat today, but treatment for many of these things can be difficult. Arthritis can be managed with stretches, strengthening exercises, and targeted injections. However, it’s an advancing problem and eventually it will get ahead of what my Docs can manage. Knowing what’s normal for your horse can be key to identifying problems early! 

For many of the other neurological issues seen with horses, it can be tricky to come up with good treatment options. Working closely with my Docs to figure out the exact problem will help narrow down potential treatments. 

Neurological disease is tough. It’s tough to identify, and tough to treat. If your horse is doing something weird, be sure to check in with my Docs sooner rather than later. Finding the cause of the weirdness early goes a long way to better treatment options. If you want to learn how to test your horse for signs of neurological behavior, check out this video on my YouTube channel. It will help you rule out some things.

Until next week,

~Tony

P.S. While you’re watching that video, make sure and subscribe to my YouTube Channel. It’s got a lot of great content, and subscribing will get YouTube to tell you when I post a new video. It also makes me feel good to see how many adoring fans I have. Hey, I’m a cat! Collecting fans is mostly what we do. That, and sleeping, which I’m off to do now.

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!

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Wet Weather and Mushy Feet

Wet Weather and Mushy Feet

Sep 19, 2022 | Abscesses, Feet, Hoof Care

Tuesdays with Tony

We sure have been getting a lot of rain around here lately. As you know, we cats are not fond of rain, and now all my favorite sunbathing spots in the clinic parking lot have become puddles! Yeah, yeah we need the rain to grow grass, but the daily thunderstorms and high humidity can wreak havoc on your horse’s feet.

Horses evolved on dry, grassy steppes… not a lot of swampland or rain there, so their feet didn’t evolve a good water management system. The repeated wet-dry cycles (or sometimes just wet) we have here cause the tubules that make up the hoof wall to suck up water and swell. When they release that water, the tubules shrink again, leaving empty space between the inter-tubular material and the tubules. This repeated cycle causes hoof walls to crack and split, and the soles to erode away. If your horse has shoes on, it makes those pesky nails loosen way before the next scheduled farrier visit. Let’s talk about the various moisture-induced hoof conditions my docs are seeing a TON of lately, and what you can do about them.

Springhill Equine Veterinary Clinic

Thrush

You know the smell. That rotting, nasty smell that you notice while picking your horse’s feet. You may also see some dark black or gray gunk oozing from your horse’s soft frog, or the deep sulci (clefts) around the frog. Thrush is caused by a mixture of several bacteria that love wet, oxygen-poor environments, like the deep grooves in your horse’s muddy feet. Horses aren’t usually very lame unless it gets really bad, but you’ll want to treat it before that happens. Luckily, with daily cleaning and application of a topical treatment, you can control thrush.

There are a variety of commercial products you can buy at the tack store to treat it. One of my doc’s favorite home-made treatments is a mixture of copper sulfate crystals and either wax or Desitin cream. My doc buys a toilet bowl wax ring from the hardware store (or Amazon) and uses bits of that mixed with the copper sulfate. It’s cheap, and it sticks to the foot like a cat to a tuna can. It’s important to pick out the feet so the treatment can contact the damaged tissue really well. Whatever product or treatment you’re using, apply it all over the frog and into the deep cleft in the center of the frog. Repeat once a day in the beginning, and as you get it under control, you can space it out.

Mushy Foot

This is a disorder that my docs see regularly here in Florida in times of wet weather. The entire sole gets soft, thin, and crumbly. You may see a depression just behind the toe where the sole compresses (it can even hold a small pocket of dirt). If you press the sole with your fingers, you may be able to slightly move it. Soles like that aren’t nearly strong enough to take the weight of a horse and protect the bones inside his foot. Mushy foot can be really painful for your horse and can look as bad as laminitis. 

During this season of frequent rainfall, your horse may need to spend some time every day in a dry area like a clean, bedded stall, to allow his feet some time off the moist grass. Remember that even if it’s not actively raining, a grassy pasture can keep the feet wet from the dew and rain it holds on to. You’ll want to pick your horse’s feet out every day.

The best topical treatment out there for “Mushy Foot” is daily application of Durasole (my docs carry it in their vehicles). Durasole contains drying and strengthening agents that thicken and harden the sole in a short period of time. Apply it every day until the sole is harder and the horse is more comfortable, then you should be able to decrease to 2-3 times a week. Work with your farrier to make sure your horse’s feet are trimmed on a 4-6 week schedule to promote healthy soles and hoof walls. If your horse is really sore, my doc may suggest he wear padded boots to temporarily cushion his feet until they start to improve. She won’t want him to stay in the boots for too long though, since the inside of a boot can be a moist environment as well.

Hoof Cracks and Abscesses

Another foot problem my docs see in this weather is cracked, crumbling hoof walls. As always, the first line of defense in keeping your horse’s hooves intact is regular trimming by a knowledgeable farrier. Too-long or unbalanced hoof walls put extra pressure on hooves that are already weakened by wet weather, and can cause those cracks to start or chunks to flake off.  Along with avoiding muddy pastures, be careful how often you wash your horse, as that’s just additional moisture he’s standing in.

Springhill Equine Veterinary Clinic

Abscesses are also common this time of year since soft, mushy feet allow easier entry for bacteria. A sudden onset of severe lameness is the most common presentation, but since that could mean other problems too, you’ll want to have my docs out to examine your horse. Also check out their YouTube video on how to make a hoof bandage so you’re prepared to manage this common problem!

Proper Diagnosis, Proper Treatment

If you suspect your horse may have any of these foot problems, give one of my docs a call for an exam. There are more serious conditions (such as laminitis) that can masquerade as one of these conditions, and an expert evaluation is highly recommended. You can even come find me here at the clinic for a “Cat-Scan”… but if it’s raining, don’t expect me to greet you outside!

Until next week,

~ Tony

P.S. If you want more, the humans have a podcast called Straight from the Horse Doctor’s Mouth, and they have several episodes on feet. I highly recommend you check that out, which you can do over on the Podcast Page of my website, or you can subscribe to it on Spotify or wherever you get your podcasts. 

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!

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Teaching Puppies and Kittens to Love the Vet

Teaching Puppies and Kittens to Love the Vet

Sep 12, 2022 | Cats, Dogs

Tuesdays with Tony

Listen, my staff are all vets and vet techs, so I do have an… appreciation for them (love may be a strong word), but I recognize that an inherent love for the veterinarian may not be present in all dogs and cats. As the human caretakers of your respective puppies, kittens, and rescued animals, you have the ability to foster a calmness and appreciation for the service providers at the vet clinic from an early age. This is done by acclimatizing your pet to things commonly done at vet visits, including general restraint, looking in ears, eyes, and mouths, and feeling legs and paws.

When you adopt or buy a new pet, it’s very important to bring them for an establishment exam to meet their new veterinarian, even if they aren’t due for vaccines or medications. In fact, making this first visit a positive one with minimal invasive procedures is another great way to foster a positive association with the doctor.

Cats (the superior species, obviously) often don’t go see the doctor enough. All animals should see their doctor at least once per year (just like all people… how’s that going for you, human?), but cats are especially good at hiding signs of disease until they’re very advanced. If they see their doctor yearly or twice yearly for general checkups, there is a very good chance illness can be caught earlier (which makes everything easier to treat).

To make your pet the best patient they can be, make going to the vet a normal part of life. Try out “happy visits.” This is when your pet comes into the clinic but nothing scary happens, just cuddles and treats. Make sure you talk to your vet clinic about this. Most are happy to do them, but they may need to put them on the schedule. Because my veterinary staff have both mobile and in-clinic appointments, they would need to make sure someone was here to appropriately snuggle the cute visitors. You can do happy visits between their regularly scheduled puppy or kitten visits, maybe once a month or every two weeks. But there’s multiple things you can do way more frequently than that.

Play with their paws and ears and open their mouth. Now, I say this mostly echoing what Dr. Speziok tells new puppy and kitten owners, because as a distinguished cat, I don’t *particularly* like my paws, ears, or mouth played with, but I will say it’s nice when it’s not a surprise. Puppies and kittens are new to the world and don’t know what is okay and what isn’t. So, teach them that it’s normal to have their human staff check out their ears, mouth, and paws. This will also help you in the future giving them nail trims.

I find that humans tend to hold puppies and kittens a lot in their first few weeks at home, but then that drops off as they get older and more independent. This results in a pet that’s very used to being held at the 8- or 12-week visit, but a very offended, very boisterous teenager at the 4- and 6-month visits.

There are some simple holds you can practice with your animals at home, and if you pair these with treat time, they will associate this practice with good things. Your goal should be to create positive associations with the things that will happen at the vet. This makes vet visits go smoother, which creates more positive associations! A happy pet at the vet means a happy vet and no barriers to a very thorough exam.

Anyway, the first one to practice is with your pet standing. Put one hand or arm under their belly and the other around the front of their chest, hold them close to your body and just let them stay still for a few minutes. If you have a second human to assist, they can practice looking in ears or eyes or picking up paws while you hold your pet– make sure to give lots of treats! Start small, puppies and kittens have super short attention spans so even 30-45 seconds at a time is helpful. An important note: if your puppy or kitten throws a bit of a tantrum, do your best to let them calm down before you release them. This way they don’t learn that a tantrum is the way to get out of restraint. Unless it’s me, and you should release me immediately. I’m just saying.

photo courtesy of ruralareavet.org

Another hold to practice is fairly simple, but you’d be surprised how little it happens outside the vet clinic. Have your puppy or kitten sit down facing away from you. You can do it on the floor or on a table, depending on how big they are. Use treats to convince them to get in this position and stay there initially, then you can work up to holding them around their chest or gently under their chin. This is usually the position animals have to get into to have their blood drawn, and if it is taught as a “normal” thing that humans sometimes ask them to do, it’s way less scary! This is also the easiest position to pill a dog or cat from, though in this cat’s opinion, you should almost always offer pills in some tasty food, as my human staff do for me.

Springhill Equine Veterinary Clinic

photo courtesy of oregonhumane.org

Finally, when your puppy or kitten is already feeling a little rollie pollie, maybe after a meal or a good play session, you can practice restraining them gently on their side. It’s usually best to start this one when they’re already laying down, but all you’ll do is put one arm across their belly and gently grasp their bottom hind leg, then put one arm gently across their neck (no pressure here!) and gently grasp their bottom front leg.

This is probably going to be really confusing at first, but if you have a second human staff member there with some tasty treats, and only hold the position for a few seconds at a time to start, it can quickly become a fun activity. Keeping animals on their sides like this is pretty common during sick vet visits, if they’ve hurt a leg, or if they need a nail trim. It’s a very normal position for animals to take, but what’s not normal if you’re not used to it with the human involvement. Making that a somewhat normal part of life from the beginning will make those future vet visits way more fun for all involved.

Being a human really isn’t that hard, much easier than being a cat, so I hope you don’t mind me adding this homework on to your job as a pet owner. Investing time into comfort with vet visits when pets are young– or new to your care– will pay off with huge returns over the course of their life, as vet visits will be less stressful and more enjoyable for everyone.

Until next week,

~Tony

P.S. Are you still relying on Facebook to show you my blog each week? Be a good human and subscribe so you can get my wisdom in your email, and a day earlier than everyone else! It’s the big purple box down below. Just scroll down a bit. That’s a good human, you can do it!

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!

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Mares (mostly) and Hormones

Mares (mostly) and Hormones

Sep 5, 2022 | Hormones

Tuesdays with Tony

There’s a thing here at the clinic called Regumate. It gets talked about a lot. Some talk of it in hushed tones as if its very mention can bring forth chestnut mare syndrome. My Docs tend to talk about it as a tool, usually during breeding season. This week, let’s explore the weird and wacky world of hormones, and the crazy things they do to mares and stallions.

One Hormone to Rule Them

It all starts in the brain for both males and females. I realize many of you may question if anything for males, particularly young males of any species, starts in the brain, but trust this cat. It does. In the brain there’s a hormone called gonadotropin-releasing hormone. We’re gonna go with GnRH because that’s a lot to type with only two paws. GnRH sends signals to the rest of the body to tell it to make more hormones like testosterone and estrogen. (If you are a hormone researcher, I ask you to give a cat a break. Yes, I know I’m simplifying things, it’s what I do. Back to the blog.) 

GnRH levels are strongly affected by daylight length. This is why mares are generally more mare-y and stallions are more stallion-y during the longer days of late spring, summer, and early fall. It’s a brilliantly designed system to ensure most reproduction happens during a season which will produce babies when there’s food. The same system is tweaked based on gestation length for other species. For example, goats and sheep experience these effects in the fall so they have babies in the spring. That Mother Nature is a smart cookie!

Moving Down the Body

So GnRH got released in the brain and did some stuff. What exactly is that stuff? GnRH hits the ovaries in mares, and the testes in stallions to cause them to crank up the pathways that turn cholesterol (yes, cholesterol) into estrogen and testosterone. But wait! This happens in a few other places as well. The skin and adrenal glands can also make estrogen and testosterone. This is important to understand when it comes to removing the ovaries and testicles. The moral of this story is that, sure, ovaries and testes do the heavy lifting of hormone production, but they aren’t the only ones to do it.

Springhill Equine Veterinary Clinic

Estrogen and testosterone get blamed for a lot of things in the world. Some of it’s valid, but these hormones do a lot of other things besides rev up the libido. In males and females, estrogens help manage the metabolism, prevent bone loss, and protect blood vessels from damage. Testosterone is important for muscle metabolism, and red blood cell formation. Testosterone is also an important source of estrogen, particularly in males. This seems backward at first read. However, the body takes testosterone, turns it into estrogen, that estrogen then signals things like bone to get stronger. Most of this happens on the spot, which keeps those estrogens from sending bodywide signals. It only affects the things that need affecting. 

Hormones and Behavior

Estrogen and testosterone also drive some behaviors to occur, and here’s where we get back to where it all started, Regumate. These hormones drive mating behavior, which isn’t always conducive to good horse riding behavior. Being smart humans, you’ve found that by increasing the progesterone in the system, you can make these behaviors calm down a bit. Progesterone is a hormone most often associated with pregnancy. It does have high levels there, but it’s also around most of the time in males and females doing various progesterone things. One of the big things it does is reduce estrogen receptors. And Regumate is a synthetic progesterone, which means Regumate reduces estrogen receptors. Surely if there’s less estrogen receptors, your mare will be more focused on your riding goals than finding the closest eligible bachelor, right? Meh, maybe. 

Springhill Equine Veterinary Clinic

Does anything about this look straightforward and simple? This diagram is the simplified version of how all these hormones get created. This means something like Regumate might help you get through some tough days with your mare. However, it also means there’s a lot of things to factor in, and there’s almost certainly a behavior component involved. If nothing else, having hormones run around the system sets up certain behaviors, and once a brain learns something, it can be very hard to unlearn that thing!

Not a Magic Wand

Regumate, and similar hormone therapies, are often a go-to for mares when they are behaving badly. It’s even used occasionally for stallions or geldings being less-than-wonderful horses. The problem is, it’s not that simple. For stallions, it’s really not that simple. There’s no work to show if use of progesterones, like Regumate, can affect longterm fertility. For geldings, the best you might, and it’s a very tiny might, get is some slight calming effects that progesterones have. For mares, you will blunt the effects of being in heat which may help your mare focus, but you won’t suddenly be riding a quiet, laid-back gelding. 

For most instances, my Docs recommend giving something like Regumate a try, while also working on behavior modifications. It may be that Regumate helps you manage that horse show that falls exactly when your mare is in heat, but that it’s not necessary when she’s not in heat. Think of it as a tool rather than a magic wand. 

When to Look Further

There are some cases where my Docs get asked about Regumate for a mare who has suddenly changed behaviors pretty drastically. In these scenarios, the mare should be checked for a specific type of tumor called a granulosa cell tumor. These tumors secrete huge amounts of just about every hormone on the chart above. It leaves mares wondering if they’re in love, or ready to fight the world. A quick scan of the ovaries and uterus with an ultrasound, along with a blood test, can help determine if this is the problem. In these cases, removing the offending ovary puts all back to right with the hormones. 

Hormones are hard! If you think your horse might need some Regumate, I suggest a chat with one of my Docs to determine the best plan to move forward. There may be more going on than a dab of progesterone can fix. 

Until next week,

~Tony

P.S. The humans did a podcast on hormones that really gets in the weeds. If you want to check that out, you can find it over on my Podcast Page, or subscribe wherever you get your podcasts. Not sure what a podcast is? It’s an audio recording, just like a radio show in the old days. You can listen to it right from your phone or computer, and it’s free!

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!

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