The value of our power measured by the heat that occurs. When you burn it up heat in calories but burn the animals are completely equivalent to not burning. Therefore, only use the power hen exploit in the body part that really.
We measure the energy of the heat generated when the heat was burning calories. But of metabolism in animals. Is not completely burned. Chicken has used only the energy use in the body. The animals are really put to good use.
The value of energy, we measured by heat generated when burning, the heat value in calories, but burned in animals are completely equal to burning. The chicken has specific energy utilization in the body. .