My horse suffers from anhidrosis when the temperature gets and stays extremely hot and humid for days at a time. He does eat a ration balancer, but he’s had the condition since before he was ever fed one. He also gets 2 cups of Omega Horseshine per day, so I think he’s getting plenty of fat.
I wish like heck I could figure out something that I’m feeding him that’s causing the issue, but I’ve literally tried everything. I started his One AC too late this summer, and he stopped sweating when we hit a bad heat wave. He’s on his second container of it now and that combined with a slight dip in the heat (still miserable) has helped start to sweat a little better. I used to hear that beet pulp was an issue. Tried getting rid of that, didn’t help. I heard soy might be an issue. Tried getting rid of that, didn’t help (though he still doesn’t eat soy). I’ve had him on pure forage (alfalfa/timothy cubes & pasture only) and that was what he was eating the first time he ever stopped sweating which was…gosh, probably 7 years ago or more now.
I think the only thing that would cure him at this point is a change in zip code to a cooler climate. But that’s not going to happen. I know how to manage him to see him through it each year, and just keep promising him that fall is coming.