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Effect of microbial phytase on performance and apparent digestibility of amino acids in male broiler chickens

Published online by Cambridge University Press:  20 November 2017

A. Hassanabadi ,
H. Nassiri Moghaddam  and
H. Kermanshahi
A. Hassanabadi*
Affiliation:
Department of Animal Science, college of Agriculture, University of Zanjan, Zanjan, Iran
H. Nassiri Moghaddam
Affiliation:
Department of Animal Science, college of Agriculture, Ferdowsi University of Mashhad P.O. Box 91775-1163, Mashhad, Iran
H. Kermanshahi
Affiliation:
Department of Animal Science, college of Agriculture, Ferdowsi University of Mashhad P.O. Box 91775-1163, Mashhad, Iran
*
E-mail: ha_ahmad@yahoo.com
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Extract

Phytic acid is present in grains and seeds as a mixed salt, complexed with various cations, proteins and lipids (Cosgrove, 1966). The phytate-protein complexes may reduce the utilization of the amino acids. Additionally, phytate may form complexes with proteases, such as trypsin and pepsin (Singh and Kricorian, 1982) in gastrointestinal tract. These complexes may reduce the activity of digestive enzymes with a subsequent decrease in the digestibility of dietary proteins. It has been reported that microbial phytase improves the utilization of amino acids in broilers (Ravindran et al., 1999a). The objective of the present study was to evaluate the effect of microbial phytase on performance and apparent digestibility of amino acids in broiler chickens.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2004 , 2004 , pp. 140
Copyright
Copyright © The British Society of Animal Science 2004

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References

Cosgrove, D. J. 1966. The chemistry, Biochemistry of inositol phosphates. Reviews of Pure and Applied Chemistry 16: 209 – 224.Google Scholar
Ravindran, V., Cabahug, S., Ravindran, G. and Bryden, W. L., 1999a. Influence of microbial phytase on apparent ileal amino acid digestibility in feedstuffs for broilers. Poult. Sci. 78: 699–706.CrossRefGoogle ScholarPubMed
Singh, M., and Krikorian, A. D., 1982. Inhibition of trypsin activity in vitro by phytase. J. Agric. Food Chem. 30: 799 – 800.Google Scholar