Principles of Animal Nutrition: Requirement and supplementation

Requirement and supplementation

REQUIREMENT AND SUPPLEMENTATION

Requirement

Growing Cattle :80 IU/ kg body weight
Dry cow :76 IU/ kg body weight
Lactating cow: 110 IU/ kg body weigh
Piglet :500 – 1000 IU / kg feed
Pig : 2000 – 3000 IU / kg feed
Poultry

Broiler : 1500 IU / kg feed
Layer : 4000 IU / kg feed

Supplementation

Animal source: Oils from livers of certain fish (Cod and Halibut), egg yolk, milk fat.
Plant source: All green leaves are rich in provitamin A, beta-carotene.
Conversion of carotene to vitamin A takes place in the intestinal mucosa.
One molecule of beta-carotene is converted into two molecules of retinol.
Conversion efficiency depends upon the species of animal.
Highest efficiency is seen in chicken and rat.
Vitamin A value is expressed as IU . One IU = 0.3 micro gram of crystalline retinol.

Last modified: Monday, 26 March 2012, 8:41 AM

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

Requirement and supplementation

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