Energy
Broilers require energy for tissue growth, maintenance, and activity. The major sources of energy in poultry
feeds are typically cereal grains (primarily carbohydrate) and fats or oils. Dietary energy levels are expressed
in Megajoules (MJ)/kg, kilocalories (kcal)/kg or kcal/lb of Metabolizable Energy (ME), as this represents the
energy available to the broiler.