ANN 111: Principles of Animal Nutrition and Feed Technology (2+1)

REQUIREMENT AND SUPPLEMENTATION

Requirement

• Lactating Cow : 289 mg / day
• Piglet : 5 – 7 mg / kg feed
• Pig : 15 – 20 mg / kg feed
• Poultry – Broiler : 27 mg / kg feed
• Poultry – Layer : 10 mg / kg feed

Supplementation

• It can be synthesised from amino acid tryptophan in the body tissues.
• If the diet is rich in protein containing tryptophan than dietary requirement of the vitamin is low.
• Rich sources of the vitamin are liver, yeast, groundnuts and sunflower meals.
• In cereals the vitamin is present in the bound form.