I would just make sure that your chickens and horses are on a regular deworming schedule.
We have had our ponies get into the coop. And two horses got to a bag of Layena before I could unload the truck. Buggers at 1/3 of the bag. No one laid an egg though. LOL All was fine, but I wouldn't suggest feeding scratch, chick feed, or laying pellets to horses.
Our chickens free range and often try to share the horse's meals with them. Chickens LOVE sweet feed. Silly birds.
We have had our ponies get into the coop. And two horses got to a bag of Layena before I could unload the truck. Buggers at 1/3 of the bag. No one laid an egg though. LOL All was fine, but I wouldn't suggest feeding scratch, chick feed, or laying pellets to horses.
Our chickens free range and often try to share the horse's meals with them. Chickens LOVE sweet feed. Silly birds.