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Protein, essential amino acids and glycine requirements of the growing gosling (Anser cireneus)*

Published online by Cambridge University Press:  09 March 2007

Zafrira Nitsan ,
A. Dvorin  and
I. Nir
Zafrira Nitsan
Affiliation:
Division of Poultry Science, Agricultural Research Organization, The Volcani Center, Rehovot, Israel
A. Dvorin
Affiliation:
Akko Goose Breeding and Research Farm, PO Box 35, Akko, Israel
I. Nir
Affiliation:
Department of Animal Science, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
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Abstract

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1. The dietary requirements for protein and amino acids of the growing gosling (0–7 weeks) were calculated according to body composition, maintenance needs and the absorption rate of amino acids from feeds.

2. The diets were formulated by least-cost linear programming, using the calculated requirements for amino acids, with or without minimal glycine + serine requirements. The diets formulated without minimal requirements of glycine + serine were supplemented with various amounts of glycine, and fed to growing goslings.

3. The calculated requirements for protein and essential amino acids were lower than those suggested for growing broilers and turkeys. The requirements (g/MJ metabolizable energy) at 0–2, 2–4 and 4–7 weeks of age respectively, were: lysine 0·88, 0·48, 0·43; methionine + cystine 0·48, 0·38, 0·29; protein 14·5, 9·3, 7·6.

4. The goslings did not respond to glycine supplementation of the diet.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 50 , Issue 2 , September 1983 , pp. 455 - 461
Copyright
Copyright © The Nutrition Society 1983

References

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