
09/14/2025
Something interesting I've been able to study the past few years is red tips on the horses' mane.
When I first learned trimming, I was told it was due to iron:copper:zinc being out of balance. Specifically, iron being way too high. Being that I studied equine nutrition in college courses and also on my own, this made sense when looking at hay tests. Iron was usually 50x higher than copper and zinc. I was taught that it should be 10:1:3 OR in the case of metabolic horses 4:1:3 was even better. The tests I did on hay over the years always showed iron way up there with almost no copper or zinc.
Now, what I find interesting is that when you look at photos of feral horses (mustangs) they typically have super black manes. They aren't bleached out, fried and red. But no one is out there making sure they get their daily dose of copper and zinc to balance out that iron... I even found one study that followed a wild herd along the east coast. The tests on the forage they ate came back exactly the same and the study even said that they expected to see issues from the low copper and zinc, but there were none found.
Ok, back to domestics. Why are we seeing so many horses with red/orange, damaged hair?
I started trying to balance my horses diet and feed high quality minerals starting in May of 2014. Over the years I've tried nearly ALL of them out there that are good quality.
California Trace and Trace Plus
Vermont Blend
Arizona Copper Complete
Dynamite Specialty Products
I even made my own blend with everything others didn't have, perfectly balanced to their hay. It didnt change a darn thing with his hair.
His hair was orange from 2inches off the base of the mane all the way down for basically 10 years.
2 years after moving to Wyoming from Illinois, he now has a dark mane. When I moved here I stopped doing all the herbs, minerals, mixing feeds, etc. I threw out a Redmond salt block (they've always had this), white salt block, filtered water (they've also always had filtered water) and either pasture or grass hay. The hay I've tested here, tests exactly the same as Illinois. Same higher iron and really low copper and zinc. Yet, somehow, his mane has totally changed color. Finally.
I believe maybe it was the humidity, sweating and crazy high temps (lots of sun exposure) that actually cause the damage to the mane. NOT high iron- because that is the same in both locations. I also dont believe it's the uv rays alone, because I am at 6200' altitude here and the sun is much much stronger and burns things much faster here than in Illinois at 600' elevation.
Interesting right? What do you think? Have you seen these changes moving to or from a high humidity and heat area, causing them to sweat even when just standing around?
Check out the photos below to see what I mean!
Sidenote: his mane has also become thicker and longer in wyoming and his legs used to also bleach out to a brownish orange color, but now they stay coal black with zero supplementation. Crazy right?