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Late gestation protein supplementation influences milk, fat and protein yields of primiparous Holstein dairy cows in the first half of their first lactation

Published online by Cambridge University Press:  20 November 2017

J. M. Moorby  and
P. H. Robinson
J. M. Moorby
Affiliation:
Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth SY23 3EB, UK
P. H. Robinson
Affiliation:
Department of Animal Science, University of California, Davis 95616, USA
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Extract

Considerable effort has recently been directed towards better defining protein requirements of dairy cows approaching parturition. Little effort has been directed towards cows entering first lactation, although Van Saun et al., (1993) suggested modest increases in milk protein production to a supplement of high undegradable dietary protein (UDP) in the late dry period. The objective of this study was to define the impact of supplementation of a high UDP protein supplement in the late gestation of cows entering first lactation on production of milk and its components.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 191
Copyright
Copyright © The British Society of Animal Science 2001

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References

Van Saun, R. J., Idleman, S. C. and Sniffen, C. J. 1993. Effect of undegradable protein amount fed prepartum on postpartum production in first lactation Holstein cows. Journal of Dairy Science 76: 236–244.CrossRefGoogle ScholarPubMed
Robinson, P. H., Moorby, J. M., Arana, M., Hinders, R., Graham, T., Castelanelli, L. and Barney, N. 2000. Influence of late dry period protein supplementation on full lactation productive and reproductive performance of Holstein cows. Journal of Dairy Science 83 (Suppl. 1): 244.Google Scholar