Essential nutrients
These are the organic compounds present in the food that provide nourishment essential for the development and growth of our body. Nutrients not only provide us with the required energy to carry out various biological processes but are also the building blocks for repair and growth in our bodies.
Vitamins
The vitamins are organic molecules required in low concentration for the proper functioning of the body. They cannot be generated in the organism and are taken into the body through the diet. The lack of proper vitamins results in diverse deficiency disorders. They are thus called essential nutrients. The important vitamins are vitamin A, vitamin B complex, vitamin C, vitamin D, vitamin K, and vitamin E.
i. What are the advantages of biological value of protein method compared to N-
balance and chemical score?
ii. A bull consumes 7 kg DM of feed containing 60 g N/kg. The bull excretes 120 g N in
the faeces and 50 g N in the urine. The feacal and urinary N had 20 g
nitrogen (MFN) and 6 g endogenous urinary nitrogen (EUN) respectively.
Calculate the BV of the protein in the diet.
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Proteins are the fundamental basis of cell structure and function. 10 - 15 % of the total body energy is derived from proteins. All the enzymes, several hormones, transport carriers, and immunoglobulin are proteins. They involved in the maintenance of osmotic pressure, clotting of blood, muscle contraction.
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