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Estrous and related behaviour in postpartum Holstein cows

By J. F. Hurnik, G. J. King, H. A. Robertson

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Over a period of 1 yr, 3 consecutive groups, each consisting of 12 postpartum Holstein-Friesian cows aged from 3 to 9 yr, were observed continually for 80 days. The distribution of mounting behaviour showed evidence of circadian rhythm with the highest frequency occurring during the nocturnal period. The total number of mounts and the mounting:mounted ratios/oestrus varied among individuals and were affected by oestrus synchronisation. The av. number of mounts/cow increased from 11.2 with 1 cow in oestrus to 52.6 with 3 cows in oestrus simultaneously. The sequence of postpartum oestrus indicated a gradual increase both in mounted and mounting activities and mounting:mounted ratios. Data indicate that, on average, more mounted cows were in oestrus (90

Date 1975
Publication Title Applied Animal Ethology
Volume 2
Issue 1
Pages 55-68
Language English
Author Address Department of Animal and Poultry Science, Guelph University, Guelph, Ontario, Canada.
Cite this work

Researchers should cite this work as follows:

  1. Animal reproduction
  2. Behavior and behavior mechanisms
  3. Cattle
  4. Estrous cycle
  5. Females
  6. Mammals
  7. peer-reviewed
  8. postpartum period
  9. Ruminants
  10. Sexual behavior
  11. sexuality
  12. Sexual practices
  1. peer-reviewed