<span>Animal sources of protein are complete proteins, and some plant foods contain all essential amino acids. Sources of complete animal proteins include milk, yogurt, cheese, meat, poultry, fish, seafood and eggs. Soy protein is a plant-based source of high-quality, complete protein.</span>
I believe It’s A I’m sorry if I was wrong
It eliminates certain genetic diseases or bad traits for the flock.
Weather condition , temperature , and food ability
From the food they intake in different ways such as Plants or other animals such as insects which are their fuel
