There was bad feeding practices that led to mad cow. They used to use downer cows in cattle feed. That causes mad cow and it's fast spread. So they banned the use of meat in cattle feed. It could still be used in chicken feed.
They would use anything that would up the nitrogen (signalling protein content) of cattle feed. Chickens as we know can be messy with feed. So the chicken litter would be dried, ground, and added to cattle feed. So they were still feeding cattle to cattle and causing issues. Then that practice was banned as well.
Chickens and pigs do not get prion diseases. Both species are known to happily cannibalise their own.
They would use anything that would up the nitrogen (signalling protein content) of cattle feed. Chickens as we know can be messy with feed. So the chicken litter would be dried, ground, and added to cattle feed. So they were still feeding cattle to cattle and causing issues. Then that practice was banned as well.
Chickens and pigs do not get prion diseases. Both species are known to happily cannibalise their own.
) in France, there is only a certain of breeders all known and monitored.