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Effect of season and parity on the milk production of Iranian Holstein cows

Published online by Cambridge University Press:  20 November 2017

A. A. Naserian  and
G. Alavi
A. A. Naserian*
Affiliation:
Ferdowsi University of Mashhad, Khoarasan, Iran. P.O.Box: 91775-1163
G. Alavi
Affiliation:
Ferdowsi University of Mashhad, Khoarasan, Iran. P.O.Box: 91775-1163
*
Email: Naserian@agric.um.ac.ir
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Extract

The variation in milk production is a regular phenomenon in all milking animals, broadly the factors which are responsible for such variations can be divided into 1) Physiological, which will be governed by the genetically make up and 2) Environmental, such as age, number of previous lactations, pregnancy, season of calving, calving interval and nutrition status. The season of calving has got a marked effect on the total production. The objective of this study was to investigate the effect of season of calving and parity of Iranian Holstein dairy cows on the milk production.

Type
Lactation
Information
Proceedings of the British Society of Animal Science , Volume 2003 , 2003 , pp. 130
Copyright
Copyright © The British Society of Animal Science 2003

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References

Bernabucci, U., Lacetera, N., Ronchi, B. and Nardone, A. 2002. Effects of the hot season on milk protein fractions in Holstein cows. Animal Research. 51: 25–33.Google Scholar
Collard, B. L. 1999. Are large cows healthier? Holstein Journal, August 1999.Google Scholar