Purina Layena feed pellets are specifically designed for chickens that are actively laying eggs. The bag weighs 50 lbs. The mixture consists of 38 nutrients that laying hens are in need of. This feed mix results in eggs with higher nutritional content, as well as a better, richer taste. The exclusive Purina Oyster Strong System strengthens the eggshells with added calcium from oyster shells, Vitamin D, and manganese. These pellets are wholesome and balanced, adding reproductive vitality and overall health. The blend is brimming with vitamins, minerals, and essential amino acids that provide strength and resilience to the hens. Other contents include prebiotics, probiotics, and yeast, which support digestive and immune health. The blend also includes many antioxidants and optimized Levels of Vitamins E, A & D. The recipe has no artificial by-products or fillers added, no artificial preservatives added, and no antibiotics or growth hormones added. Feeding instructions are given on the package.