My horse's skin

We got an Arab Pinto a month ago. He was very thin and we have been working on putting weight on him.

I started him on Senior Feed, Beet Pulp and Vegetable Oil. After just a few days he has started this weird shedding. Tons of dead skin sloughing off, like dandruff. Not chunks of skin.

We had a dog that we rescued. It took him a few months on good food to get a shiny healthy coat and I recall him having lots of dandruff.

Is this the same type thing? Shedding out the old and ready to grow new?

Are you sure it isnt rainrot?

It doesn't sound like it has anything to do with the food because if it's only been a few days that seems a bit premature. Sounds to me like it's more due to coat changing getting his winter coat with unhealthy skin. I use a product called vet aid (vetaidproducts.com)and it will def help you sooth and moisturize his skin while your on your road to recovery with a healthy diet.