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Evaluation of dual-purpose cows on a seasonal grass-based system of milk production

Published online by Cambridge University Press:  20 November 2017

F. Buckley ,
P. Dillon ,
R.D. Evans  and
J.F. Mee
F. Buckley*
Affiliation:
Dairy Production Department, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
P. Dillon
Affiliation:
Dairy Production Department, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
R.D. Evans
Affiliation:
Dairy Production Department, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
J.F. Mee
Affiliation:
Dairy Production Department, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
*
Email:[email protected]
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Extract

In recent years the relevance of continued selection for higher milk yield alone has been questioned for three reasons (Simm, 1998): 1) the introduction of milk quotas in some countries, 2) the now well documented deleterious effect of selection for yield on health and fertility (Pryce and Veerkamp, 2001), and, 3) the increased emphasis in payment schemes in many countries on milk composition. The purpose of this study was to measure the biological efficiency of two dual-purpose breeds (Montbeliarde (MB) and Normande (NR)) relative to two Holstein-Friesian strains (upgraded Irish Holstein-Friesian (CL) and Dutch Holstein-Friesian (HF)) on a spring-calving milk production system based mainly on grazed grass as a feed.

Type
ISAE/BSAS
Information
Proceedings of the British Society of Animal Science , Volume 2003 , 2003 , pp. 58
Copyright
Copyright © The British Society of Animal Science 2003

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References

Dillon, P., Crosse, S., Stakelum, G., Flynn, F., 1995. The effect of calving date and stocking rate of the performance of spring-calving dairy cows. Grass and. Forage. Science. 50: 286–299.Google Scholar
Pryce, J.E. and Veerkamp, R.F., 2001. The incorporation of fertility indices in genetic improvement programmes. In: “Fertility in the high producing dairy cow” (ed. Diskin, M.G.), British Society of Animal Science, Occasional Publication No. 26 1: 237–249.Google Scholar
Simm, G., 1998. Dairy Cattle Breeding. In: Genetic Improvement of Cattle and Sheep. Farming Press, U.K. Google Scholar