Sometimes feeding more gives your horse less.
When we exceed about 2.5 to 3% of a horse’s bodyweight in feed per day (so 12.5 to 15 kg for a 500 kg horse) the feed starts to move really quickly through the gut. Problem is, digestion, and particularly fiber digestion takes time. Fiber is digested via fermentation in the hindgut (more on how that works here) and fiber fermentation is a slow process. So feed needs to just have the time to hang about in the hindgut for a fair while (like 24 to 48 hours).
When we feed too much, feed gets pushed through the gut really quickly (essentially as it comes in the front end it gets shoved out the back) and it will only be partially digested… so you may be feeding a lot, but your horse doesn’t have full opportunity to digest it.
Think about it like this…
If I gave you a pool noodle, one of the ones with a hole in it, and told you to keep it perfectly flat/horizontal and then gave you a small bucket of marbles to push through the noodle… you would poke them in one end (and assuming it’s flat so they don’t just roll out) they would only start coming out the other end once the entire noodle was full and as you pushed one in, one should come out… make sense?
Now suppose I told you you had to take 10 minutes to put all of the marbles through the noodle… you would need to take your time in poking one in so they didn’t come out too fast.
Now, if I gave you a bucket of marbles 3 times the size of the original bucket and told you to also push all of these through the pool noodle in 10 minutes you would have to do it three times as fast to get them all done in time. When you feed too much this is what happens, feed goes in one end and comes out the other too fast and only partially digested.
In a lot of cases, less is more!
Feeding less gives the feed time to sit around and move slowly through the gut, allowing it to be fully digested. Not much sense making expensive manure right?!
Take a look at your feed program and feed amounts and see if this might apply… often when we try to push for weight gain we get stuck in this trap of feeding too much and it doesn’t seem logical to feed less to get more weight gain. But trust me on this one, it really does work this way!