01/13/2025
So we talked about feeding our old horses but what about our metabolic/laminitic/PSSM horses?!
Read below for more of Dr. Laura's thoughts and go to strategies for some of her very favorite, and often difficult to manage, horses and ponies (Another long one, sorry)
1) Take a look at your hay. Unfortunately, it doesn't seem to be common practice here in the northeast that hay suppliers take the initiative and test their own hay (shoutout to the midwest suppliers), but knowing your sugar and starch content is pretty important so test if you can. This is a deep, dark worm hole, but lets hit the basics for the situations where you can't test your hay. Try and get a mature first cutting hay. Here's the kicker, if we're talking about Non-structural carbohydrates (NSC), which in simple terms is your starch and sugar combined, the cutting number doesn't guarantee a low NSC. Meaning a 1st cutting hay can absolutely have higher NSC than a second cutting. NOW, what first cutting is usually guaranteed to have is lower calories, which is why it is usually still recommended to those metabolic and laminitic horses/ponies because they are usually overweight. Getting their calories down can help them lose weight and regulate their insulin better. If you have older horses with not great teeth, you can either supplement their 1st cut hay with some soaked hay pellets (Standlee does actually have an NSC on their bags) if they need the extra fiber/calories or you can buy a softer 2nd cut with the knowledge that you may have to soak the hay.
2) Soaking. What does it do? Even though it is popularly done for long periods of time, soaking hay is not a great long term solution. Soaking will FOR SURE remove potassium, magnesium, phosphorous, and 30-40% of water soluble carbohydrates (WSC) when soaked for the standard 30-60 mins. There are some research studies out there that do say some starch and protein is removed, but there have been others that say they are not, so for now we will go with what's for sure removed. So whats the big deal? Soaking long term can lead to dietary imbalances especially in vitamins and minerals, so we often have to replace them in the diet in other ways.
3) Ration balancers and grains. These horses and ponies need to stay at 10% NSC or under and preferably 4% or less starch and often do not need extra calories aka complete/concentrate grains are out. Now what about a ration balancer? Unfortunately most true ration balancers do not meet the criteria needed for these types of horses, as their NSC and/or starch content are way too high (I'm talking about you Purina Enrich). So instead I recommend feeding a vitamin/mineral supplement with no additional iron and often these are pelleted so you can get away with feeding just that if you need no other calories. (Madbarn Amino trace is a favorite).
4) Other supplements. If weight is needed, I will increase hay before anything else especially if I know the NSC. If I need additional supplementation beyond that, then I will reach for a fat supplement and often an easy one is any omega 3 rich oil. Be careful with supplements that are pelleted as they often have hidden sugars/starches you wouldn't think to check for. For the very few skinny insulin dysregulated/laminitic horses, this is one of the only times a complete feed with an appropriate NSC can be recommended strictly for the caloric content. Lastly, often these horses do not get fresh grass, so I do like additional vitamin E in their diet to maintain normal neuromuscular function and to scavenge free radicals. Remember, Vitamin's A, D, E, and K are fat soluble so you can overdose them if you feed them excessively since they are stored in the fat and not expelled with the urine.
Each horse or pony is different, if you have any questions on what you're feeding yours feel free to reach out. Know a laminitic/ metabolic/PSSM horse owner feel free to share the post with them!
Disclaimer: We are not endorsed by any products mentioned in this post but this post is sponsored by another one of Dr. Laura's unsatisfied rule followers pictured below.