Applied animal nutrition questions.

1. What is a metabolisable energy of a feed?
2. Describe the parameters you need to measure in order to estimate metabolisable energy content of a feedstuff.
3. Discuss the factors affecting the metabolisable energy values of feedstuffs.

1. What is energy system?
2. Describe any two net energy systems and show their differences

1. Give a brief account on how you can estimate the protein requirement of a growing pig using factorial approach.
2. In a biological assay using rats fed a certain dietary protein, the daily nitrogen intake was 61.5 mg.If the Nitrogen excreted in the faeces and urine were 19.5 and 29.5 mg/day, respectively, compute:

1. Nitrogen balance
2. Biological value
3. Given the metabolic faecal nitrogen and endogenous urinary nitrogen to be 21.3 and 9.1 mg/d, respectively , recalculate the true biological value of protein.

Water soluble vitamins are synthesised by the gut microorganisms . Briefly discuss the factors influencing their synthesis.

Give an account on factors affecting the efficiency of utilization of a given protein by monogastic animals.

Using a well elaborated diagram , give an account on the partition of energy in the body of ruminant animals.

Write short notes on

1. Physical factors affecting feed intake by ruminants
2. Factors affecting metabolisable energy values of feedstuffs
3. Essential amino acid index.

A sheep consumed 2.3 kg/day hay with 75% DM and 18MJ GE/kg DM. The average faecal voided was 1.2 kg/day with 35% DM and 17.5 MJ GE/kg DM. In addition it excreted 1.40 and 2.05 MJ/day in urine and Methane , respectively.

Compute

1. Dry matter digestibility of the hay
2. Digestible energy content of hay in MJ/kg DM.
3. Metabolizable energy value of the hay in MJ/kg DM.

A sheep consumed 1.5 kg hay with 80% DM and 18 MJ/kg DM. It excreted 4.5 MJ/day of energy in faeces, 1.40 MJ/day in urine and 2.05 MJ/day in methane. Calculate the ME value of hay in MJ/kg MD.

1. What do you understand by the term an ideal protein
2. Give an account on how you can estimate the protein requirement of a growing pig using the factorial approach.