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Effect of lucerne hay particle size and physical effectiveness factor of diet on utilisation of soya hulls by dairy cows

Published online by Cambridge University Press:  23 November 2017

M. Behgar ,
R. Valizadeh ,
A. A. Naserian ,
F. E. Shahroudi  and
M. R. Nasiri
M. Behgar*
Affiliation:
Agricultural, Medical and Industrial Research School. Nuclear Science and Technology Research Institute., Karaj. P. O. Box: 31485-498., Islamic Republic of Iran
R. Valizadeh
Affiliation:
Agricultural, Medical and Industrial Research School. Nuclear Science and Technology Research Institute., Karaj. P. O. Box: 31485-498., Islamic Republic of Iran
A. A. Naserian
Affiliation:
Agricultural, Medical and Industrial Research School. Nuclear Science and Technology Research Institute., Karaj. P. O. Box: 31485-498., Islamic Republic of Iran
F. E. Shahroudi
Affiliation:
Agricultural, Medical and Industrial Research School. Nuclear Science and Technology Research Institute., Karaj. P. O. Box: 31485-498., Islamic Republic of Iran
M. R. Nasiri
Affiliation:
Agricultural, Medical and Industrial Research School. Nuclear Science and Technology Research Institute., Karaj. P. O. Box: 31485-498., Islamic Republic of Iran
*
Email:[email protected]
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Extract

The effect of inclusion of soya hulls (SH) as grains or forages sources in rations of dairy cows have been studied in many experiments. However, when SH are used to substitute for forage sources they induced milk fat depression, lower rumination time and ruminal pH (Weidner and Grant. 1994a, b). There is no data on effectiveness of diet particle size when SH used as a forages source. The objective of this study was to investigate the effect of physical effectiveness factor (pef) of diet on utilisation of SH in dairy rations.

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Posters
Information
Proceedings of the British Society of Animal Science , Volume 2008 , 2008 , pp. 244
Copyright
Copyright © The British Society of Animal Science 2008

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References

Kononoff, P. J., Heinrichs, A. J. and Buckmaster, D. R. 2003. Journal of Dairy Science. 86, 1858–1863.Google Scholar
SAS User’s Guide: Statistics, Version 9.0 Edition. 2002. SAS Inst., Inc., Cary, NC.Google Scholar
Weidner, S. J. and Grant, R. J. 1994a. Journal of Dairy Science. 77, 513–521.Google Scholar
Weidner, S. J. and Grant, R. J. 1994b. Journal of Dairy Science. 77, 522–532.Google Scholar