Purina® Layena® Crumbles Chicken FoodPurina Layena Crumbles chicken feed is made for hens who are at least 18 weeks old and laying eggs. This layer feed has all the nutrients your chickens need, so you don't have to add any supplements. This 16% protein chicken feed supports hens' health and keeps them laying nutritious eggs. It contains oyster shells, Vitamin D, and manganese to support strong eggshells. This chicken feed also contains live probiotics, and prebiotics for immune and gut