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 faecal and urinary N had 20 g metabolic faecal nitrogen (MFN) and 6 g endogenous urinary nitrogen (EUN) respectively. Calculate the biological value (BV) of the protein in the diet.
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.
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 faecal and urinary N had 20 g
BV stands for “biological value.” It evaluates the protein quality by measuring the proportion of absorbed protein or amino acid from food that becomes combined with the proteins of the organism's body.
The proteins are the source of nitrogen for an organism. The nitrogen in these proteins is recycled back by the cellular machinery to produce proteins. Some proportion of the proteins are absorbed and later excreted out of the body through urine or feces.
Biological Value is the ratio of nitrogen integrated into protein to the amount of absorbed nitrogen. The formula for the calculation of BV is given below.
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