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Apparent amino acid absorption from feather meal by chicks*

Published online by Cambridge University Press:  09 March 2007

Rachel Bielorai ,
Z. Harduf ,
B. Iosif  and
Eugenia Alumot
Rachel Bielorai
Affiliation:
Division of Animal Nutrition, Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Z. Harduf
Affiliation:
Division of Animal Nutrition, Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
B. Iosif
Affiliation:
Division of Animal Nutrition, Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
Eugenia Alumot
Affiliation:
Division of Animal Nutrition, Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel
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Abstract

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1. The apparent absorption values of individual amino acids from two samples of feather meal (FM) were determined in the lower ileum of chicks fed on diets containing magnesium ferrite as a marker.

2. The average absorption values for FM amino acids were low, approximately 0.50, as compared with approximately 0.85 for soya bean, used as a control. Values for individual amino acids from FM differed distinctly, ranging from 0.20 to 0.70. Low values were obtained for aspartic acid, histidine, lysine, glutamic acid and cystine.

3. An indication of the low absorption of the previously-mentioned amino acids was obtained by analysing the amino acid composition of the FM residues undigested by pepsin or pancreatin.

4. The reasons for testing the apparent rather than the true absorption are discussed.

Type
Paper on General Nutrition
Information
British Journal of Nutrition , Volume 49 , Issue 3 , May 1983 , pp. 395 - 399
Copyright
Copyright © The Nutrition Society 1983

References

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