Proteins

1. The primary purpose of proteins is the formation of new tissue and repairs of broken down tissues.

2. The muscles, glands, many organs, hormones, and enzymes all require proteins for proper functions.

3. It can also serves as a source of heat and energy but these particular functions are more efficiently serve by carbohydrates and fats.

4. Milk proteins have high nutritive value due to favorable balanced of essential amino acids. Essential amino acids are:-Arginine, valine, hiistidine, isoleucine, leucine, lysine, threonine, tryptophane, methionoine, phenyl alanine.

5. Milk proteins are only deficient in sulphur (S) containing amine acids eg. cysteine, methionine etc.