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Effect of genetic merit on postpartum follicular development, milk production, body weight and, insulin and glucose levels in dairy cows

Published online by Cambridge University Press:  05 November 2021

S.E.M. Snijders ,
K. O'Farrell ,
M. P. Boland ,
P. Dillon ,
M. Diskin ,
D. O'Callaghan  and
J.F. Mee
S.E.M. Snijders
Affiliation:
Teagasc, Dairy Production Research Centre, Moorepark, Fermoy, Co. Cork, Ireland Department of Animal Science, University College Dublin, Belfield, Dublin 4, Ireland
K. O'Farrell
Affiliation:
Teagasc, Dairy Production Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
M. P. Boland
Affiliation:
Department of Animal Science, University College Dublin, Belfield, Dublin 4, Ireland
P. Dillon
Affiliation:
Teagasc, Dairy Production Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
M. Diskin
Affiliation:
Teagasc Research Centre, Athenry, Co. Galway, Ireland
D. O'Callaghan
Affiliation:
Department of Animal Science, University College Dublin, Belfield, Dublin 4, Ireland
J.F. Mee
Affiliation:
Teagasc, Dairy Production Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
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Extract

Efficient milk production in Ireland in both spring and autumn calving herds is very much dependent on compact calving. This requires an early resumption of ovarian activity, high submission rate, and pregnancy rate to service. Since 1984 there has been an increase in the genetic merit of Irish dairy herds. High genetic merit animals have reduced reproductive performance due to the demands of high milk yield (Nebel and McGilliard, 1993) and the loss of body weight and body condition (Butler and Smith, 1989). However, little comparative data on the reproductive performance of dairy cows of different genetic merit are available. The objective of this study was therefore, to determine the relationship between genetic merit of dairy cows and follicular growth patterns, milk production, body weight loss, insulin and glucose levels in early lactation.

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Programme
Information
Proceedings of the British Society of Animal Science , Volume 1998 , 1998 , pp. 188
Copyright
Copyright © The British Society of Animal Science 1998

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References

Butler, W. R., Smith, R. D. 1989. J. Dairy Sci. 72:767–783.10.3168/jds.S0022-0302(89)79169-4CrossRefGoogle Scholar
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