(a) Explain how each of the following factors affect feed formulation for farm animals: age of the animal; physiological state of the animal; purpose of kee...

(a) Explain how each of the following factors affect feed formulation for farm animals:

• age of the animal;
• physiological state of the animal;
• purpose of keeping the animal.     

(b)      State five precautions to be taken to ensure the preparation of good quality feed for layers.