Do they actually eat them? Cant imagine mine eating something like that! He he, you could make a nice ommelette for them with chopped up apples etc. in it - yum yum?!
i know it is not a horse but when we had a racing greyhound the racing kennel fed every dog a raw egg in there feed.(1 per day) when he retired we carried on doing it. he would eat all around the raw egg until he had finished the meat then lap it up made such a mess. how i miss my greyhound. RIP