horse fact Friday
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HORSE FACT FRIDAY: PPID OR CUSHINGS

Friday, October 25, 2024

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My apologies for missing the last two weeks of Horse Fact Friday. I've just been so busy with my own sick horse that this hasn't been the priority. Since I do research for these blogs, they are a little more time consuming to write than ones where I just share my feelings, thoughts, and life. 

But we are back this week, talking about a condition that affects a large number of horses as the graphic above shows. And that is PPID or as it's more commonly referenced Cushings.

What is PPID?

PPID stands are pituitary pars intermedia dysfunction. 

It is an endocrine disorder that affects 30% of horses, ponies, and donkeys over the age of 15. With PPID, there is an enlargement and benign tumors that appear in the pituitary gland. (The pituitary gland is often called the "master gland" as it is responsible for producing and regulating many of the body's hormones.) Fortunately, the tumors usually do not spread and rarely become large enough to cause a neurological disease. However, they do cause the pituitary gland to produce and release hormones that create an abnormal metabolic state.

How can we tell if our horse has it?

Some clinical symptoms of this include delayed shedding of the coat, muscle wasting (especially along the toppling), weight loss, increased thirst and urination, excessive sweating or an abnormally dry coat, behavior changes, reproductive abnormalities, and frequent infections.

The only way to truly know is to have your veterinarian test for it. The test is called the ACTH. There is also an overnight dexamethasone suppression test, the thyrotropin releasing hormone stimulation test, as well as doing a CBC (complete blood count) in their overall geriatric evaluation. Testing for insulin dysregulation is also a course of diagnostics. 

**reminder I am not a veterinarian, and none of this information is a replacement for veterinary care and diagnostics**

What can happen to my horse if they have this?

Along with the other clinical symptoms a horse can have dental disease, chronic sinus and skin infections, intestinal parasite, along with just a general ill thrift. There may also be co-existing disorders such as metabolic problems, colic, diarrhea, pneumonia, as well as developing insulin dysregulation which increases the risk of laminitis. 

The body is unable to fight infections, viral or bacterial, as well leaving the horse vulnerable. 

How do we treat it?  

Symptomatically treatments can include clipping the coat, changing the diet, dental care, and regular wellness care.

There is also medication called peroglide mesylate. The name brand is commonly known as Prascend. 

If you think your horse may have Cushing's please find a veterinarian in your area to start treatment. 


  



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HORSE FACT FRIDAY: LET'S TALK ABOUT KISSING SPINE

Friday, October 4, 2024

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T13 T15 T17


What is it?

Commonly called kissing spine, this is overriding or impinging dorsal spinous processes (ORDSP). It happens when the vertebrae are too close together so that they are touching or overlapping in the bony projections. 

It is most common in the thoracic spine with through T13-T18 with T15 being the most affected. This area is directly under the saddle and where the rider sits. 

What are the clinical signs?

The clinical signs vary greatly with some horses having zero signs. Others may be lame or have overt lameness. Poor performance is another sign. As well as hypersensitivity to brushing, being cinched up. Horses may buck, rear, hollow their back, kick out, resist the bit, have trouble with transitions, cross-canter, or refuse work. Often their backs are sore to the touch. 

How do we diagnose it?

The most common method is via x-rays and a clinical exam. Thermography which uses infrared light to take photos can also be used. Bone scans (nuclear scintigraphy) and ultrasound are also some tools your veterinarian may use to make an official diagnosis. 

So, how do we treat it?

Managing pain will be crucial as well as strengthening the back. Stretching, shockwave therapy, as well as injections of anti-inflammarodies or corticosteroids are common treatments. There is also surgery. 

There are several different types of surgery offered. One removes half the bone (approximately three inches) at the top of the dorsal spinous processes (DSP). This surgery is highly invasive with a long recovery time. Endoscopy is another. This removes selected DSP and rejoins the ligaments. There is also interspinous ligament desmotony (ISLD) where in interspinous ligaments are cut. 

*reminder that I am not a veterinarian and all decisions for your horse should be thoroughly discussed with them. this is simply information*

What is the prognosis?

The majority of horses can be treated and return to work. However, the prognosis is poor if the horse is under the age of five, has five or more vertebrae involved, or when kissing spine is secondary to other issues.

How do we prevent it?

Since not much is known about what causes it there is little we can do for prevention. Experts believe it is related to poor conformation and improper saddle fit. Prevention would lie in breeders not breeding horses with poor conformation, and riders to ensure that their saddle fits their horses properly. Improper training is another issue that has been discussed as a potential cause of kissing spine. This would include horses who stargaze (ride with their head up), with their back hollow, and not engaging their core muscles. Whether or not it is genetic is not known at this time. 



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Horse Fact Friday: Fitness Levels & Risk of Injury

Friday, September 6, 2024

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In our home we say to train like you fight. And training your horse to fitness levels that match the level of competition is no exception. 

A few years ago, I was fortunate enough to attend a seminar on equine fitness levels. I got a brilliant lecture, as well as demonstration on horse heart rates in specific situations. This lecture and presentation stuck with me. I've always maintained fit horses, and I've been fortunate in terms of injuries during competition. But after this lecture and doing research, I don't think it was luck. I think my fitness program for my horses helped them avoid injury. 

At the bottom of this post, you will find the articles where much of this information comes from. I encourage you to research this more as well. As ambassadors of our equestrian sport (no matter which sport that is) we are responsible for educating ourselves so that we can do what is best for our horse partners. 

In a study that Practical Horseman published they followed nine ponies and 20 horses as they were prepping for the European Eventing Championships in 2010 and 2011. Each pony or horse was testing using a standardized exercise test which comprised of four consecutive 1000 meter gallops at 6.7, 8.3, 10, and 11.7 (or top speed) mps. The heart rates, respiration rate, and blood tests to check for plasma-lactate was done after each run and then again after a ten minute cool down walk. This test was done at the start of training and then again, after 11 weeks of competition training. At the start of training, horses and ponies were separated into average or good fitness levels. 

By the 11 week mark only four horses and three ponies remained. The most common cause of withdrawal was "locomotor injuries" which included tendon injuries, fetlock injuries, and unknown lameness. When researchers looked at which horses were withdrawn the majority were from the average fitness level group. Overall the horses that remained sound had lower heart rates than horses that were reported as injured. 

In a study shared by Mad Barn, a disruption in exercise routines at racetracks in California, New York, and Florida showed that horses who had their routine disrupted were more prone to race-related injuries. KER reports that horses who have a higher rate of lactate during and after competition are not being trained sufficiently. Higher levels of lactate are frequently correlated with higher rates of injury. 

In addition to reducing injury, keeping horses fit improves their gait, flexibility, improves bone mass, increases cartilage thickness, and improves joint health. Those are just the physical benefits of keeping a horse fit. Regular training is mentally stimulating and decreases some behaviors that are associated with boredom. 

But is it enough to have a fit horse?

Not according to Oklahoma State Extension. The type of exercise and training matters as well. Your horse needs to exercise with specificity to increase their ability to perform. They need to train how they will compete. This is not to say that if you're a barrel racer like me that all the exercise should be done on the pattern. That's a good way to make your horse hate the barrel pattern. However, you should identify the types of moves, acceleration, and agility your horse will need for your specific event then find ways to exercise and train utilizing those moves. This will increase muscle fibers that are required for your event which, in turn, will increase their ability to perform. 

And make sure you aren't skipping warm ups and cool downs. Warming up is shown to increase speed as well as provide a mental shift in the mindset of both horse and rider. Cool downs at the walk or trot show a faster clearance of lactate which enhances recovery time. 

How can you test your horses fitness level?

According to EquiDocVet, there are five major components to testing equine fitness levels. 

  1. Heart Rate - A resting heart rate should be between 28 and 48 beats per minute (BPM). Testing for fitness means taking a resting heart rate, performing an exercise test, then testing to see what the recovery time is back to resting. The faster the recovery means a more fit horse. 
  2. Respiratory Rate - A normal resting respiratory rate is between 8 and 16 breathes per minute. A fit horse's respiratory rate after intense exercise should return to normal within 15 to 20 minutes. 
  3. Body Condition Scoring - Using the hennecke scale evaluate your horses BCS. Overweight horses have a higher risk for increased strain on joints, tendons, and ligaments putting them at a higher risk for injury. Underweight horses will have a hard time building muscle putting them at higher risk for injury. 
  4. Energy and Feel - This one is harder to evaluate objectively, and involves knowing your animal. Essentially the rider should be able to ascertain whether there is a dramatic difference from the start of a training session to the end of it. Is the horse absolutely worn out or still feels like they have energy? If the horse is worn out, then that's an indicator that the level of exercise is too high for the current fitness level. Things should be adjusted and gradually increased to avoid injury. Tired animals are more prone to injury.
  5. Improvement of Stats - Have an exercise test that you periodically check to see if there is improvement. Improvement means increased fitness which is the goal. 
Fitness of our animals can help them decrease injury and feel better about their work. It can also help us feel more confident knowing we are headed into competition on a well prepared horse that is up to the challenge. 

Thanks for being on this journey with me, don't forget to subscribe to the blog, and follow on social media. 



Sources

https://practicalhorsemanmag.com/health/horse-fitness-and-injury-30073/

https://equiddocvet.com/fitness-indicators-for-your-horse-by-veterinary-professionals/

https://madbarn.com/benefits-of-exercise-in-horses/

https://kerclockit.com/home/equine-fitness/

https://extension.okstate.edu/fact-sheets/physical-conditioning-of-horses.html

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Body Condition Scoring in Horses

Sunday, April 21, 2024

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Something every equestrian should know is how to evaluate the body condition of their horses. There are hundreds of charts and articles about this on the internet, as well as multiple Facebook groups that will help you with nutrition if you're struggling. I'm going to do a crash course here, along with some reminders that checking your horses BCS (body condition score) as well as assessing their general health and fitness level is something that should be done on an on-going basis. 

There are six areas that we look at on horses to assess their BCS. These are the lumbar spinous processes, ribs, tailhead, right behind the scapula or shoulder, their neck, and their withers. The scale is a one through nine scale with one being emaciated and nine being severely obese. 

Some advantages of this are that it is easy to perform, integrates all body areas, and helps owners assess for risks of disease or notice changes in their horses. Some disadvantages is that it only assesses subcutaneous fat, there can be differences between evaluators, and scores may vary between breeds or body types. 

Each area is scored individually on the 1-9 scale then an average of those areas is taken to give an overall score, but as you grow more experienced in evaluating most people can just provide an overall score. 

There are some industry standards for specific classes of horses to include breeding mares, stallions, and performance horses. Breeding mares should range between 6 and 7, stallions tend to have the best success at a 5 to 6, while performance horses typically have a 4 to 5. 


This chart is simplified to give y'all an understanding. And you might look at it and say "why are performance horses at a 4? That's moderately thin!" And you'd be correct, it is moderately thin. 

However, there is a vast difference between a super fit performance horse like a racehorse or barrel horse (compare them to an Olympic or top level human athlete) and one that is just thin because of a caloric deficit. The difference is a healthy thin and an unhealthy thin. The performance horse is an incredible athlete who just simply may not be able to maintain the extra fat due to the level of performing and training they are doing. 

This is why being able to assess fitness levels alongside BCS is important. When someone is riding a thin horse that is not fit that's not a healthy decision for the horse whereas someone riding a very fit horse is. 

Example of a fit horse at BCS 4


Example of a non-fit thin horse at BCS 4

Should you ride a horse below a BCS of 4? Absolutely not. Their focus needs to be on gaining weight. And in my opinion, if you are bringing a horse back from being underweight you don't start riding them until they are at a BCS of 5. Senior horses often tend to have a harder time gaining and keeping weight, so ideally if I have a senior horse I want them at a 5/6 before I start riding them to provide that buffer. 

The same goes for horses above a 7. They need to be brought back into shape slowly. It is just as unhealthy for them to be obese as it is for them to be too thin. 

If you are struggling with proper nutrition for your horse please reach out to an equine nutritionist. I am happy to provide referrals if you reach out to me on social media. 




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Horse Fact Friday: Futurities and Derbies Oh My!

Friday, January 26, 2024

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The world of barrel racing can be confusing with all of the associations and options and events. This post is going to specifically talk about juvenile events, futurities, and derbies in the barrel racing world. There are other events that have juvenile, futurity, and derby events as well. 

These are less "rules" than general guidelines as each association governing the event is free to make their own rules, although most are fairly similar. 

A juvenile horse is a three year old that has not raced previously. Horses running in this event are unproven in the arena. 

A futurity horse is a four OR five year old that has not previously competed. In former years, these were all four year old. However, many organizations have begun letting people hold a horse back and still compete during its five year old year. There are many reasons a horse may be held back including injury, immaturity, rider health, etc. 

Derby horses typically have two years old eligibility either at their five and six year old year or their six and seven year old years. Derby horses could be horses that have not previously competed, but most move from competing at futurities into competing at derbies. Some derby entries offer incentive prizes to the horses that previously competed in their futurity. 

Regardless of the organization all juvenile, futurity, or derby horses MUST be able to prove their age. Most require breed registration papers, however there are some that will allow a letter from a licensed veterinarian verifying age of an animal without registration papers. If questioned, this must be corroborated by the event's veterinarian. 

There are also additional incentives that allow both juvenile, futurity, derby, and open horses which is an entirely different blog post. 

As a reminder, this is in no way a completely comprehensive blog post about all of the intricacies to navigate the world of futurity colts. This is a very general informative post for beginners to our industry. I have gotten some nasty rude messages from people indicating that I need to stop sharing information that is so basic. That is the purpose of the majority of my Horse Fact Friday posts that I cross post to Barrel Racer University is to be basic beginner information for those just starting out. So please, if you have something negative or nasty to say keep it to yourself. That's not what my mission is with this blog or BRU. 


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