Make sure that you are not giving them garlic. Garlic is an allium. Alliums are known to be toxic to poultry. One of the main symptoms is anemia.I did a necropsy and found liver necrosis. Combined with a few other issues we've seen, anemia we discovered in the living poults, anorexia Ive discovered in the living and deceased, I think its a combo of Aflatoxin B1 and Ochratoxins. We're moving the birds to a clean space and upping their protein back to starter feed, hopefully they clear the toxins and Ill have an good update in a week or 2.