Nutrients found in feed materials are necessary for the maintenance, growth, production, and health of birds. Nutrients help break down food for energy, improve feed utilization, and enhance digestion, which improves growth and profitability. However, some plants also contain antinutrients like arabinoxylans, beta-glucans, cyclopropenoid fatty acids, gossypol, L-canavanine, phytate, protease inhibitors, saponins, and tannins, which must be considered when formulating feed. Feeds can be prepared locally from grains and feedstuffs, from local grains and imported concentrates, or as commercial feed.