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The effect of different concentrate: Lucerne hay ratio on crude protein degradation of various feeds using in situ technique

Published online by Cambridge University Press:  23 November 2017

Mohsen Danesh Mesgaran ,
Alireza Vakili  and
Alireza Heravi Mousavi
Mohsen Danesh Mesgaran*
Affiliation:
Ferdowsi University of Mashhad, Mashhad, Iran
Alireza Vakili
Affiliation:
Ferdowsi University of Mashhad, Mashhad, Iran
Alireza Heravi Mousavi
Affiliation:
Ferdowsi University of Mashhad, Mashhad, Iran
*
Email:[email protected]
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Extract

Available information on the effect of ruminal pH on degradation of crude protein of various feeds is scarce. It has been reported that in a high concentrate diets, protein degradation is usually reduced (Molero et al., 2004). This reduction has been attributed to lower ruminal pH, which causes the changes in protein solubility (Loerch et al., 1983) and reduces fibrolytic activity of rumen microflora. There is also limited information concerning the requirements for rumen degradable N (RDN) when high-grain diets are given to steers, and most of that information has been obtained using urea as the source of RDN. The aim of the present experiment was to evaluate the effect of different concentrate to lucerne hay ratios (60:40, 70:30, 80:20 or 90:10) on ruminal crude protein degradation kinetic of lucerne hay, barley grain, soybean meal and fish meal.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2007 , April 2007 , pp. 167
Copyright
Copyright © The British Society of Animal Science 2007

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References

Loerch, S. C., Berger, L. L., Gianola, D. and Fahey, G.C. Jr., 1983. Effects of dietary protein source and energy level on in situ nitrogen disappearance of various protein sources. Journal of Animal Science. 56: 206–216.Google Scholar
Molero, R., Ibars, M., Calsamiglia, S., Ferret, A. and Losa, R., 2004. Effects of a specific blend of essential oil compounds on dry matter and crude protein degradability in heifers fed diets with different forage to concentrate ratios. Animal Feed Science and Technology. 114: 91–104.Google Scholar