McHale Equestrian

19/10/2022

Unfortunately due to injury, I am needing to take time away from trimming to recover and heal. I will be contacting current clients to cancel appointments and will do my best to provide contacts for a replacement where possible.

30/08/2022

25/04/2022

I went for a little walk around the local show park yesterday during the season opener hunter/jumper show. I try not to look down at horse feet unless someone asks for my opinion, but despite my best efforts, I couldn’t stop noticing that most of the horses there, from the low level hunters to the 1.20m jumper class I watched for a while are very obviously NPA and/or showed obvious signs of caudal failure. NPA means “negative palmar angle” on front feet or “negative plantar angle” on hinds. It means that the back of the coffin bone is lower than the front. It is supposed to be the other way around! A normal palmar/plantar angle is 2°-10° yet soooo many horses work on feet with palmar/plantar angles of less than zero. It is so common that by most people it is seen as normal. Caudal failure means structural collapse of the caudal (back) part of the foot.

Horses may not be obviously lame with this condition, however there are often subtle signs. Reluctance to go forward, forging (stepping on or hitting the backs of the front shoes with the hind feet), overreaching, not tracking up, refusing jumps, bucking after jumps (because landing hurts), lack of hindquarter engagement, decreased gait quality all around, behavioural issues under saddle, etc. These symptoms can be easily mistaken for other things or riders and trainers can tend to use punishment to try to change some behaviours that have their root in hoof pain. It is also very hard on the legs and most specifically the DDFT (deep digital flexor tendon) and navicular area of the foot because of the biomechanics of a foot with an improper angle cause increased friction where the DDFT runs under the navicular bone to attach to the back of the coffin bone. This is why low heeled horses are at increased risk of developing navicular syndrome.

We need to retrain our eyes to know what is normal. We also need to realize that asking horses to work hard when their feet are a mess is not fair and causes sometimes irreparable damage, both to their feet and to their opinions about working.

How do we fix it? First we need to acknowledge that NPA is a systemic issue in farriery and we need to change the way we trim and shoe. Owners need to recognize NPA and find a farrier who recognizes NPA and knows how to fix it. Farriers need to stop trimming off the back of the foot and add frog support to our shoeing packages. Frog support needs to be normalized. More than one client has remarked to me that if we put frog pads on the horse, potential buyers will think there is something wrong with the horse. This is because what is normalized currently in farriery are open heeled regular metal shoes, which are a huge part of what causes NPA. When we lift up the foot off the ground and provide no structural support to the frog, the center of the foot collapses. This is a very simple concept, yet we are still doing things the same way we have always done and expecting a different result. This is the definition of insanity and it is killing our horses slowly. If I help to change only one thing in my time as a farrier, I hope for it to be this.

For reference, normal/ideal angles are generally as follows:
Hairline: about 20°
Dorsal wall (toe): about 50-55°, steeper on some breeds
Heel: equal to toe angle or perhaps 5° less than dorsal wall

This horse’s toe is close to 50° however the heel is 23° lower than the toe and I could not even measure the heel at the back because the bulb is sitting on the shoe! I had to measure it where I could see the angle of the tubules on the wall. The hairline is far too low. This foot is not helping this horse at all and this horse is one of many. I might get some angry messages for this, but we need to acknowledge that most of our performance horses are NPA and/or have some degree of caudal failure and then then we need to do something about it.

——-

Addendum: This post has pi**ed off some people. Fair enough. It’s also been shared all over the world, which has been great and also quite the experience. Wayne over at Progressive Equine has been writing about caudal failure and NPA for a few years now, as have others. This topic is not new. For whatever reason, this post in particular has caught peoples’ attention.

What I ask of those who are angry about it, or indignant that I dared to challenge the status quo is this: if you think I’m wrong, ok. Go prove it. If I’m wrong, why are you angry? If I am wrong, then this post is irrelevant to you and irrelevant to your work and there is nothing to be angry about. I did not (and will not) name any particular farrier. Who did the job is not even relevant, because this problem is not about one person. I am not trash talking anyone. I am saying that there is a systemic issue in how farriers are taught to trim and shoe and that it is on us, as a group, to correct it by continuing to learn and grow. That is my perspective. If you think I’m wrong then disregard it. And yes, some horses manage in regular shoes and to the owners and farriers of those horses I am glad for you. For everyone else, maybe what I wrote here will help you. That is all I am trying to do.

22/12/2021

I know many of us horse owners and hoofcare providers have seen the conversations about iron in a horse's diet, and the potential effect on hooves. Before we get too into the nitty gritty of diet and the hoof, I want to back up and look at a horse’s needs, based on the NRC Requirements. Hooves are so often a reflection of the health of the animal, and to make sure a horse can grow the healthiest hoof possible, we need to make sure they are meeting all their nutrient and mineral requirements. Thank you to Dr. Gustafson for helping me understand this a bit better myself!

MINERALS IN FORAGE- are they sufficient?
From Dr. Gustafson’s database of hay testing, she found that out of 250+ samples of forages tested, 97.8% were deficient in zinc, 95.2% were deficient in copper, 12% were deficient in manganese, and 0% were deficient in iron. That means that just from hay, a horse could consume the daily requirement for iron, or sometimes far exceed it. On the other hand, horses rarely if ever meet their requirements for copper and zinc from their forage. That alone is a problem - one that grains and feeds rarely correct well, since so many horses can't handle or aren't fed the recommended daily amount of grains, often due to lower calorie needs or hoof issues preventing owners from feeding grains with sugar and starch above 10% combined. So horses are often walking around with frank deficiencies of minor minerals- copper and zinc to be exact.
But, many feed companies make a ration balancer to handle the caloric issue and they have a much more concentrated nutrients at a much lower feeding rate, you say! Sounds great, right? But here’s the catch: they often add iron, and sometimes a lot of it. We will talk about the issue with this in a second.

IRON AFFECTING COPPER AND ZINC ABSORPTION
On top of the fact that horses are walking around with copper and zinc deficiencies, the frank deficiency is worsened with a relative deficiency from iron - since we know that iron inhibits the uptake of copper and zinc. Dr. Piper Klemm has studied iron chelation extensively for her dissertation, and actually chatted with me on her podcast about why excess iron inhibits the uptake of copper and zinc in the body, and the horse has no natural way to chelate iron (other than bloodletting). Iron competes with copper and zinc absorption in the body, and copper and zinc are needed for healthy hooves.

BUT IS IRON REALLY ABSORBED?
Now, there are some groups that tend to say that iron isn't absorbed well or isn't bioavailable in various forms. While this would be wonderful- it just doesn't seem to work out well in practice. Aside from the fact that many hoofcare providers can show bloodwork on personal or client horses with high serum iron, TIBC, and ferritin, and have horses with diagnosed iron overload, article after article online shows how horses rarely if ever have an iron deficiency (in fact, iron deficiency anemia is almost unheard of in horses). So they are clearly getting their dietary iron from somewhere. One study linked below shows 22 equines on a property with high iron in the water, and each horse was found to have excessive iron stores and liver issues.

BUT ISN'T IRON REGULATED IN THE BODY?
Yes, hepcidin does regulate iron in the body, but unfortunately this can go awry if it is overwhelmed with excessive iron supply (Equine Applied and Clinical Nutrition, 2013). Couple that with the fact that horses with metabolic issues may also have problems with hepcidin and iron regulation, we can assume that not all horses are regulating iron properly.

DOES IRON CAUSE METABOLIC ISSUES?
In short- we can't claim that. And no one is trying to claim that. Let me explain.
Dr. Kellon and Dr. Gustafson published a study last year of hyperinsulinemia and hyperferritinemia in horses. They found that every single horse in their study, all hyperinsulemic horses, had serum ferritin that exceeded the reference range. They did NOT say that iron causes metabolic issues, or laminitis, though.
There is a CORRELATION between high iron and hyperinsulemic horses. I want to be clear that correlation does not mean causation so I’m not saying that high iron CAUSES metabolic issues, but it seems that metabolic horses may sequester iron, which can lead to a host of issues.
Another study in 2012 using horses (actually hoping to compare to rhinos) found the same correlation - high ferritin levels at peak insulin concentrations after dextrose administration. They even mention captive rhino diets are higher in iron, that the captive rhinos have more fat stores, and they are moving less. I’d say that is similar in domesticated horses compared to feral/wild. The issue here is hay is often high in iron, or at least not deficient in iron as Dr. Gustafson’s database mentioned, and some places also have high iron water, and then people will sometimes feed iron supplements or grain that has iron added. There is no "shortage" of iron in the equine diet. And we know that iron inhibits the uptake of copper and zinc, which is needed for healthy hooves.

SO WHAT CAN DO ABOUT THIS?
So what do we do for horses to ensure that they are getting all the minerals they need for a healthy hoof? Well, we know that feeding at least the NRC amounts of minerals is important for whole horse health and therefore hoof health, and often it can be a minefield, since feeding an excess of one mineral can affect absorption of another mineral. Dr. Kellon has a running field study (over 2 decades now) cataloguing owners practicing tight mineral balancing on metabolic horses, tracked on the ECIR online database of case histories. From there, we have seen that this mineral balancing over time, for example keeping an iron:copper:zinc:manganese ratio of 4:1:3:3, helps to balance for possible dietary iron excesses or at least meet mineral deficiencies, observed through hoof changes, bloodwork, and comfort over time. Many of us have seen a direct result of healthier feet, tighter white line, increased comfort, when doing this. I’m sure many of us could talk for hours about the improvements we have seen in feet when mineral balancing- anecdotally of course! And interestingly enough, there was a study in 1999 that even suggested that supplementing copper and zinc can help with the susceptibility to white line disease (Pollitt quoted this study in 2005).

Since the safe upper tolerable limits of copper and zinc are much higher than we would ever supplement, and since some hays almost hit the safe upper limits for iron, I'd say it's fairly cheap, easy, and safe to avoid added dietary iron and try testing hay (I use EquiAnalytical), and balancing copper and zinc in the diet. You just might be surprised at the results you see in the body, coat, and feet 😊

A few things to explore:

Iron issues in metabolic horses: https://pubmed.ncbi.nlm.nih.gov/32042647/

The rhino study, using an equine model: https://pubmed.ncbi.nlm.nih.gov/23156707/

Iron overload in horses: https://forageplustalk.co.uk/iron-overload-in-horses-by-dr-kellon/

Iron issues in water and liver issues:
https://beva.onlinelibrary.wiley.com/doi/abs/10.1111/evj.13029

Balancing copper and zinc to iron: https://www.hoofrehab.com/Diet.html

Podcast episode where Piper Klemm and I discuss iron and copper and zinc here: https://www.theplaidhorse.com/2021/10/22/plaidcast-252-michael-tokaruk-alicia-harlov-by-taylor-harris-insurance-services/

Podcast episode with nutritionist Scott Cieslar discussing iron and mineral balancing here: https://madbarn.com/videos/mad-about-hooves-scott-cieslar-on-nutrition-for-hoof-health-the-humble-hoof/

Podcast episode with Sally Hugg here, for more basic information: https://thehumblehoof.com/2023/08/08/nutrition-and-the-hoof/

I also have a webinar which spends 40 min on nutrition and the hoof here: https://youtu.be/RUKjGgoKnyw

This webinar includes case studies/pictures.

02/01/2021

Here's an interesting read about why horses need constant access to safe forage, even when they're overweight or on a diet.

What is the longest a horse can safely go without food?

More and more I see horses and ponies stood for long periods of time with no hay or haylage. Usually under the guise of a “weight control diet”. So how long can a horse be without food before damage is done? And what damage is done?

For those with a short attention span, I’ll give you the answer to begin with - 4 hours, maximum.

Why?

Horses are grazers. They are designed to eat constantly. They have no way of storing their acids and digestive enzymes, they’ve never needed to. They have no gall bladder to store bile and their stomachs release acid constantly, whether or not there is food in the stomach and intestines.

A horses stomach only holds approximately 8-15 litres. Depending on the substance eaten, it takes on average 4-6 hours for the stomach to completely empty. After this, the acids and enzymes start to digest the inside of the horses stomach and then the intestines. This causes both gastric and intestinal ulceration. It has been estimated that 25-50% of foals and 60-90% of adult horses suffer from ulceration. But I won’t go into detail about this, there is a lot of information around about ulcers.

So is that it? Are ulcers the only concern?

No, having an empty stomach is a stress situation for a horse. The longer they are starved, the more they release stress hormones, cortisol predominantly. Cortisol blocks insulin and causes a constantly high blood glucose level. This stimulates the body to release even more insulin, and in turn this causes fat tissue to be deposited and leptin resistance. Over time this causes insulin resistance (Equine Metabolic Syndrome). All of these mechanisms are well known risk factors for laminitis and are caused by short term starvation (starting roughly 3-4 hours after the stomach empties). Starving a laminitic is literally the worst thing you can do. Over longer periods, this also starts to affect muscle and can cause weakness, and a lack of stamina so performance horses also need a constant supply of hay/haylage to function optimally.

Let’s not forget horses are living, breathing and feeling animals. We talk about this stress reaction like it’s just internal but the horse is well aware of this stress. Door kicking, box walking, barging and many other stable vices and poor behaviour can be explained by a very stressed horse due to food deprivation (we all have that Hangry friend to explain this reaction). Next time you shout or hit a horse that dives for their net, remember their body is genuinely telling them they are going to starve to death. They know no different.

But surely they spend the night asleep so they wouldn’t eat anyway?

Not true. Horses only need 20mins REM sleep every 24 hours (jealous? I am!). They may spend a further hour or so dozing but up to 22-23 hours a day are spent eating. So if you leave your horse a net at 5pm and it’s gone by 8pm, then by 12am their stomach is empty. By 4am they are entering starvation mode. By their next feed at 8am, they are extremely stressed, physically and mentally.

Now I know the cob owners are reading this mortified. I can almost hear you shouting at your screen “if I feed my horse ad lib hay he won’t fit out the stable door in a week!!”

I will say that a horse with a constant supply of hay/haylage will eat far less then the same horse that is intermittently starved. They don’t eat in a frenzy, reducing the chance of colic from both ulcers and over eating. Cobs included.

However I’m not suggesting you sit your cob in front of a bale of haylage and say have at it! There is a difference between ad lib and a constant supply. There is much we can do to reduce calorie intake and control weight whilst feeding a constant supply.

The easiest is small holes nets. There are many. Trickle nets, greedy feeders, nibbleze, trawler nets etc. My personal favourite is the Shires Soft Mesh 1”. They don’t cost the Earth, they are easy to fill and they don’t have knots so are much gentler to the teeth. Now often I suggest these types of nets to owners and the owner tells me “Oh no, *** won’t eat out of those” 🙄 this is nonsense. If he was left it, he would. Remember, you can give a normal net and one of these for them to nibble at after. Better than leaving them with nothing at all.

A few other tricks, hang the net from the ceiling/rafters, it’s harder to eat out of a net that swings. Soak the hay, a minimum of 4 hours to be effective. Mix with straw but be sure to introduce the straw slowly and make sure it’s top quality and a palatable type eg Barley or Oat, otherwise they won’t eat it.

Don’t forget exercise. The best way to get weight off a horse is exercise. Enough exercise and they can eat what they want!

And lay off the bucket feed and treats! Horses on a diet require a vit/min supplement in the form of a balancer but that’s it. The odd slice of carrot or swede won’t do any harm but no licks, treats, treacle, molasses, cereal based rubbish. Even if it says low sugar or the marvellously misleading “No added sugar”! Your horse would rather have a constant supply of hay, I promise.

Written by Vikki Fowler BVetMed BAEDT MRCVS

A few edits for the critics-

Firstly, feeding a constant supply does not mean ad lib feeding. It means use some ingenuity and spread the recommended amount of daily forage so the horse is never stood with out food for more than 4 hours. I am not promoting obesity, quite the opposite, feeding like this reduces obesity and IR. This can be done whilst feeding your horse twice a day as most horse owners do. Just think outside the box for your own situation.

Secondly I am in the UK and this post is UK specific, use some common sense when reading. Yes in warmer climates, soaking hay for 4 hours is dangerous and studies show 1 hour is plenty in hot weather but in the UK’s arctic climate, a minimum of 4 hours is required. Equally the UK feed exclusively grass hay. I can not comment on other types.

Thirdly, yes every horse/pony and situation is different, but this is a law of nature and all horses have this anatomy and metabolism. How you achieve this constant supply is individual, the need for it is not.

Fourthly, the use of hay nets in the UK is very very high. I’d estimate 95% of horses I see are fed this way and very very few have incisor wear or neck/back issues as a result. Yes, feeding from the ground is ideal, but a constant supply, I feel trumps this. Again with ingenuity both can be safely achieved.

Finally, straw can be fed to horses safely, introduced very slowly, with fresh water always available, plus a palatable and digestible type of straw which will depend on your area. Again many horses in the UK are bedded on straw and most of them eat it. This is not a new concept to us.

Final finally 🤦‍♀️ and I feel I must add this due to the sheer number of people contacting me to ask, feed your horses during transport!!! I am astonished this is not normal in other countries! Again in the UK, we give our horses hay nets to transport. We don’t go 10 mins up the road without a haynet and a spare in case they finish! Considering we are a tiny island and we rarely transport even 4 hours, we never transport without hay available. I have never seen an episode of choke due to travelling with hay available. If you are concerned, use a slow feeder net so they can’t take too much in at once.

If you get to the end of this post and your first thought is “I can’t do this with my horse/pony, they’d be morbidly obese”, you haven’t read the advice in this post thoroughly.

06/12/2020

McHale Equestrian is on the move! We are leaving our old home in Taradale, and will be based in Carisbrook for the next couple of months, while we wait to finalise our new property.
I will still be travelling to all the same areas, and there won't be much change for my clients, so don't panic!
Moving can be stressful for people and animals, but we and our animal family are settling in to our temporary home (although my mare is less than impressed with her new paddock)
We are looking forward to a peaceful holiday period once the move is finished!

14/04/2020

Just a little reminder to keep an eye on your ponies! Although Spring is the time we are usually the most vigilant for signs of laminitis, Autumn can also encourage enough growth of green grass to affect a susceptible pony or horse.
Some of the signs of laminitis can be subtle, but you will know your pony best, and will usually notice before anyone else if something doesn't seem "right".
If you have any concerns about a horse or pony that is showing signs of laminitis, it's time to contact a veterinarian. Although your hoofcare professional will be a big part of the rehabilitation process, it's important to start out with an accurate diagnosis.

12/04/2020

For anyone who is interested in learning more about their horses hooves and becoming more self sufficient regarding hoofcare, this course would be brilliant! Tanya is the person who is responsible for starting me on the barefoot road several years ago. I definitely recommend her as a teacher 😁

24/03/2020

Stay safe everyone, and wash your hands!
Here at McHale HQ we are trying our best to keep ourselves and everyone around us safe and well.
At this stage, appointments are still going ahead as planned.
If you have any questions or would prefer to reschedule, please don't hesitate to get in touch.

23/03/2020

To all of McHale Equine's valued clients.

At this stage, I will be continuing to trim horses as I am not classed as a "non-essential service". This may change in the future and I will do my best to keep everyone updated.

Trims that have already been booked in, can go ahead as planned. If you would prefer to postpone or reschedule for a later date, please let me know asap.

If you, or anyone in your family is unwell for any reason, please cancel your appointment and reschedule.

There will be some changes made to how I'm working. It would be preferred if horses could be tied for trims, or held in a way that allows for a 2 meter distance between myself and the handler. I understand that for some horses this may not be possible and we will work with this as best we can. Please do not be offended as I try to keep contact to a minimum.

If possible, payments are to be made by online bank transfer. I will pass on my bank details to anyone who requires them.

I will be doing my absolute best to socially isolate outside of work to keep you as safe as possible, and I would appreciate you doing the same for me.

If you have any questions please do not hesitate to get in touch.

Regards
Jessica McHale