Emaciated Rescued gelding any tips?

Update on Doc. Yesterday I did a full evaluation on the poor guy and gave him a medicated bath. He has rain rot the length of his back and rump. HE has bad scalding on his butt from the runs. He has terrible scratches on all four legs and thrush in all four feet. And remember how skeptical I was of bannix I take it back. It is wonderful. After only two treatments the swelling went out of all three legs. He has a long way to go yet with the skin issues but bannix already seems like a miracle drug to me. I will be taking your advice and sending a fecal in tomooroow so they will have the results by Tuesday. And we started on strategy now too. Hoping it is mostly all teeth problem though and crossing my fingers that its an easy fix. I left him loose in the yard yesterday to fill up on fresh grass and it sounded like a dolphintalking all day. Everytime he moves his mouth its like rubber rubbing on rubber. My one year old and three year old were allover himrunning around him and he never batted an eye. I trust him already as much if not more than a few horses I've had for years. I think he will make them a great first horse if we can just get him better.

I used MTG on my thin guy with rain rot. It worked like a miracle!

Glad to hear he is getting some good treatment now!

Awwww...poor old chap! Glad he is in a good place now Good luck with him...

He looks like my daughter's two year old colt got to looking like. We were pouring alfalfa pellets and beet pulp into him, but he just kept getting thinner and thinner...and weaker and weaker. Turned out he couldn't tolerate alfalfa - it was toxic for him. We are feeding him beet pulp and oats, in addition to alfafa free hay. He slowly gaining weight. Vet said it would take a while because his system had to recover from the alfalfa poisoning. It's been three months, and he's still skinny, but looks healthy again otherwise (no sunken eyes or listlessness). Going to have to find something to bulk up his feed, though. His bucket looks pathetic compared to the other horses, and he tells us about it!

(Note: alfalfa is a wonderful feed for most horses, there are just a few that can't metabolize it properly and it can kill them.)

May I ask what you are doing for the thrush?
My recent experience with it has me wanting to share this bit of information in hopes it may help someone else.

Pick out hooves.

Scrub clean with a good stiff brush (I use an old dandy brush) using water and dish detergent (I used Dawn)

Rinse with clean water

Next for four days, I inserted an antibiotic that is used to treat cows for mastitis into every crack and cranny in the frogs.

Now that I am through with the antibiotics, I spray the frogs with a mixture of teatree oil and unpasteurized apple cider vinegar. This is after the scrubbing and rinsing.

I am seeing results that make me very happy. Hope it is something that will help you.

Also might add that I feed soaked plain (no molasses) beet pulp plus black oiled sunflower seeds and ground flax and hay.

Best wishes to you and your boy!