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Standard values for dairy herd fertility parameters

Published online by Cambridge University Press:  24 November 2017

R. J. Esslemont ,
R. Schutte  and
A. T. Chamberlain
R. J. Esslemont
Affiliation:
Department of Agriculture, Earley Gate, University of Reading, Reading, RG6 2AT, United Kingdom.
R. Schutte
Affiliation:
Department of Agriculture, Earley Gate, University of Reading, Reading, RG6 2AT, United Kingdom.
A. T. Chamberlain
Affiliation:
Department of Agriculture, Earley Gate, University of Reading, Reading, RG6 2AT, United Kingdom.
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Extract

Performance recording is generally necessary for the efficient management of dairy herds. There is a variety of recording systems currently available but interpretation of the results is hampered by an imprecise knowldege of attainable levels of performance and the magnitude of the shortfall that warrants interference. Mean values and standard deviations were calculated to provide standards for the assessment of other herds. Data were obtained for 6636 cows calving in one season in 50 herds (herd size ± s.d., 132.7 ± 44.5). Target values were considered to be the 75th percentile and interference levels the 25th percentile (Table 1).

Type
Dairy Production
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1992 , March 1992 , pp. 116
Copyright
Copyright © The British Society of Animal Production 1992

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