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A fresh look at inter-service intervals in UK dairy herds

Remnant, J.G.; Huxley, J.N.; Hudson, C.D.

Authors

JOHN REMNANT John.Remnant@nottingham.ac.uk
Clinical Associate Professor

J.N. Huxley jon.huxley@nottingham.ac.uk

C.D. Hudson



Abstract

Good heat detection is essential for good reproductive performance in the modern dairy herd using artificial insemination. Veterinary surgeons and farmers use a variety of tools to monitor heat detection including the analysis of inter-service intervals (ISIs). The aim of this study was to explore the distribution of inter-service intervals in a large sample of UK dairy herds and establish targets for use by practitioners when interpreting ISIs. In this study service records from 167 dairy herds from across the UK were used to generate ISI profiles for each calendar year of each herd. Intervals between serves were categorised as short irregular (2-17 days), short regular (18-24 days), long irregular (25-35 days), long regular (36-48 days) or extended (>48 days). Herd years were ranked by oestrus detection efficiency, the mean of the top quartile of herd-years had 6%, 40%, 16%, 19% and 19% of intervals in each interval category respectively. There was no correlation between the percentage of serves falling in the short regular and short irregular category for a given herd-year (Spearman rho magnitude

Citation

Remnant, J., Huxley, J., & Hudson, C. (2014). A fresh look at inter-service intervals in UK dairy herds. Cattle Practice,

Journal Article Type Article
Acceptance Date Jan 1, 2014
Publication Date Apr 1, 2014
Deposit Date Aug 18, 2017
Publicly Available Date Aug 18, 2017
Journal Cattle Practice
Electronic ISSN 0969-1251
Peer Reviewed Peer Reviewed
Keywords Fertility monitoring, inter-service interval, oestrus detection
Public URL http://eprints.nottingham.ac.uk/id/eprint/44980
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Remnant et al_A fresh look at inter-service intervals_Repository.pdf (494 Kb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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