My paint horse does this late every spring. He has a beautiful long mane, and he rubs a big chunk out of it. Then he stops doing it. It's grown out by the next year, when he promptly does it again. The vet was stumped, but I think I finally figured it out. I think he has sweet itch, allergic to gnats. What I found that REALLY helped is a product called M-T-G. Seems to stop the itching, and promotes the hair growing back. It's greasy and it smells like barbecue sauce lol, but it definitely seems to work.
MTG oil is good but you might also try some antiseptic mouthwash like listerine - work it down into the base of the mane and/or tail - it helps relieve the itch (which is typically the root cause of the rubbing).
I don't really know what it could be..First I thought he was just sticking his head through to see the other horses. But now im thinking it's more than that because it's just in one place
Is there grass on the outside that he can reach when he sticks his head out?
I highly suggest NOT using the sleazy/slinky/whatever, that's covering up the issue (if there even IS an issue) instead of fixing it plus what horse wants to have a sleazy on 24/7 or...ever? LOL
I say: cut it (don't ROACH, just cut it short so it can catch up and you can trim it to be even - it seemed more encouraging to me LOL). Apply MTG once a week. Watch it grow. I had to do the same thing and I left it as is for a while but realized I had to cut it.
Here you can see my mares...styling of her gorgeous mane :roll: October -
Then finally in January I decided it just wasn't working and cut it...as you can see I didn't make it even, I put MTG on her whole mane from then on and trimmed it to be even once it caught up.
In March it was almost caught up and I trimmed it (like right before I took this picture which is why it looks so crappy)
And then the most recent picture I have of her from last month, where it was braided up.
It took less than a year to be able to even it out and get it long enough to braid it and tame it and that was without my MTG 'treatments' being on schedule, I just did it when I felt like it really. I definitely did NOT want to roach it, I very rarely come across horses that look good with a roached mane. It's still growing now but the only way we were able to keep it growing and not being ripped out again was to change her paddocks to one where she couldn't stick her head through the fence.