ISSN 2398-2993      

Estrus: signs and detection

obovis

Synonym(s): bulling, heat


Introduction

  • With the increased use of artificial insemination in cattle, the ability of farm staff to accurately identify and detect estrus in their cattle is crucial to successful reproductive performance.
Print off the farmer information sheet on The Oestrus Cycle to give to your clients.

What is estrus?

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Behavioral signs of estrus

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Physiological changes during estrus

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Timing of estrus

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Principles

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Methods of estrus detection

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Confirmation of estrus

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Further Reading

Publications

Refereed Papers

  • Recent references from PubMed and VetMedResource.
  • Silper B, Polsky L, Luu J, Burnett T A, Rushen J, de Passillé A M & Cerri R L A (2015) Automated and visual measurements of estrous behavior and their sources of variation in Holstein heifers. II: Standing and lying patterns. Theriogenology 84, 333-341 PubMed.
  • Silper B, Robles I, Madureira A, Burnett T,  Reis M, de Passillé A, Rushen J & Cerri R (2015) Automated and visual measurements of estrous behavior and their sources of variation in Holstein heifers. I: Walking activity and behavior frequency. Theriogenology 84, 312-320 PubMed.
  • Homer E M, Gao Y, Meng X, Dodson A, Webb R & Garnsworthy P C (2013) Technical note: A novel approach to the detection of estrus in dairy cows using ultra-wideband technology. Journal of dairy science 96 (10), 6529-6534 PubMed.
  • Forde N M E, Beltman P, Lonergan M, Diskin J F, Roche & Crowe M A (2011) Oestrous cycles in Bos taurus cattle. Anim reprod sci 124 (3–4), 163-169 PubMed.
  • Roelofs J, Lopez-Gatius F, Hunter R H F, Eerdenburg H & Hanzen C (2010) When is a cow in estrus? Clinical and practical aspects. Theriogenology 74 (3), 327-344 PubMed.
  • Roelofs J, van Eerdenburg N & Kemp B (2005) Various behavioral signs of estrous and their relationship with time of ovulation in dairy cattle. Theriogenology 63 (5), 1366-1377 PubMed.
  • Van Eerdenburg F, Loeffler H & van Vliet J (1996) Detection of oestrus in dairy cows: A new approach to an old problem. Vet Q 18 (2), 52-54 PubMed.

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