Grower/Finishing Pellets can be fed from 6-8 weeks all the way up to week 16 or even to finish for continued growth. Introduce this feed gradually from week 16 to laying hens.100% organically grown agricultural ingredients There are no synthetic vitamins or minerals in this feed. CompositionOrganic Wheat Organic Soya Expeller Organic Linseed Expeller Organic Alfalfa Organic Maize Calcium Carbonate Yeast Di-Calcium Phosphate Organic Linseed & Sea SaltAnalytical ConstituentsCrude Protein 17% Crude Oils and Fats 4% Crude Fibre 5% Crude Ash 13.5%The Lysine and Methionine in this feed are from natural sources - synthetic amino acids are not used in this feed.