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An evaluation of the effect of nutritional strategy in early lactation on reproductive performance of Holstein-Friesian dairy cows

Published online by Cambridge University Press:  22 November 2017

H S Gilmore*
Affiliation:
Agri-Food and BioSciences Institute, Hillsborough, County Down, BT26 6DR, United Kingdom Queen’s University of Belfast, University Road, Belfast, County Antrim, BT7 1NN, United Kingdom
F J Young
Affiliation:
Agri-Food and BioSciences Institute, Hillsborough, County Down, BT26 6DR, United Kingdom
R A Law
Affiliation:
Agri-Food and BioSciences Institute, Hillsborough, County Down, BT26 6DR, United Kingdom
A R G Wylie
Affiliation:
Agri Food and BioSciences Institute, Newforge Lane, Belfast, United Kingdom
D C Patterson
Affiliation:
Agri-Food and BioSciences Institute, Hillsborough, County Down, BT26 6DR, United Kingdom
C T Elliott
Affiliation:
Queen’s University of Belfast, University Road, Belfast, County Antrim, BT7 1NN, United Kingdom
C S Mayne
Affiliation:
Agri-Food and BioSciences Institute, Hillsborough, County Down, BT26 6DR, United Kingdom
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Extract

Poor fertility is a major problem on dairy farms. On-farm studies indicate than pregnancy rates to first service have declined from approximately 55% between 1975 and 1982 to 39% between 1995 and 1998 (Royal et al., 2000), illustrating a decline of approximately 1% per year during this period. The cause is multifactorial and influenced by many factors including genetics, management and nutrition. Previous studies have reported improved fertility through nutritional modification in early lactation (Gong et al., 2002). The aim of this study was to evaluate the effect of nutritional strategy in early lactation on reproductive performance.

Type
Theatre Presentations
Copyright
Copyright © The British Society of Animal Science 2009

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References

Gong, JG, Lee, WJ, Garnsworthy, PC and Webb, R 2002. Reproduction 123, 419–427.Google Scholar
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