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In situ protein degradability of some feedstuffs used on Iranian dairy farms

Published online by Cambridge University Press:  20 November 2017

A. Heravi Moussavi ,
M. Danesh Mesgaran  and
M. J. Zamiri
A. Heravi Moussavi*
Affiliation:
Dept. of Animal Science, Ferdowsi University, Mashhad, Iran
M. Danesh Mesgaran
Affiliation:
Dept. of Animal Science, Ferdowsi University, Mashhad, Iran
M. J. Zamiri
Affiliation:
Dept. of Animal Science, Shiraz University, Shiraz, Iran
*
Email:heravi@ferdowsi.um.ac.ir
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Extract

The undegraded intake protein content of feeds is regarded as a major limiting factor for high performance lactating cows (NRC, 2001). The rate and extent of ruminal protein degradation determine the availability of nitrogen to the microorganisms, and of nitrogenous products in the small intestine. The ruminal and post-ruminal disappearance rates of dry matter (DM) and protein (CP) of protein feeds were shown to be higher than those of energy and forage feeds (Danesh Mesgaran, 2003). On the other hand, the nutritive value of crops is affected by the climatic conditions, and its determination is essential for optimum feeding. The objective of the present study was to determine the in situ DM and protein degradability of some Iranian feedstuffs.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2004 , 2004 , pp. 238
Copyright
Copyright © The British Society of Animal Science 2004

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References

NRC, 2001. Nutrient requirements of dairy cattle, seventh revised edition. National Academy of Science, USA.Google Scholar
Danesh Mesgaran, M., 2003. Ruminal and intestinal protein disappearance of some tropical (Iranian) feeds used in dairy cow diets estimated by the mobile nylon bag technique. Proceedings of the British Society of Animal Science, 118.Google Scholar