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Efficiency of the utilization of the energy of food in laying hens

Published online by Cambridge University Press:  27 March 2009

Gh. Burlacu  and
Margareta Baltac
Gh. Burlacu
Affiliation:
Institute of Animal Nutrition, Romania
Margareta Baltac
Affiliation:
Institute of Animal Nutrition, Romania
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Summary

The efficiency of utilization of the energy of food in White Leghorn laying hens for egg production was measured. A ration with a gross energy of 4469 kcal/kg dry matter and 19·4% crude protein had a metabolizable energy of 80·1±1·7% of the gross energy, and 78·5±5·3% of the metabolizable energy was present as net energy.

The maintenance requirement of metabolizable energy of White Leghorn hens weighing 1·723±48·5 kg and a production of 19·3±0–49 eggs per month was 125·8 kcal/kg0·75/24 hr.

The energy cost per g of protein and fat synthesized by laying White Leghorn hens was estimated to be 7·20 and 12·13 kcal metabolizable energy respectively.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 77 , Issue 3 , December 1971 , pp. 405 - 411
Copyright
Copyright © Cambridge University Press 1971

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References

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