Skip to main content Accessibility help

Female-female influences on the duration of the post-partum anoestrous period in beef cows

  • I. A. Wright (a1), S. M. Rhind (a1), A. J. Smith (a1) and T. K. Whyte (a1)


Two experiments were conducted to determine whether female to female influences could reduce the duration of the post-partum anoestrous period in beef cows. In experiment 1, cows were housed from calving, either in individual stalls, which precluded physical contact with other cows (treatment I; no. = 19) or as a group, with a cow in oestrus introduced to the group twice per week (treatment G; no. = 18). The percentage of cows cycling by day 50 post partum was similar for both treatments, but at 91 days post partum was significantly higher (P <0·05) in the G than in the I cows (89% v. 58%).

In experiment 2, cows were housed in individual stalls from calving and exposed twice per week to either cervical mucus collected from cows in oestrus (treatment M; no. = 21) or distilled water (treatment W; no. = 24). The percentage of cows cycling by 70 days post partum was similar in both treatments but by 130 days there were significantly more (P <0·05) M cows cycling (86% v. 58%). In neither experiment were LH profiles at 22,43 or 64 days influenced by treatment.

The results indicate that cervical mucus of cows in oestrus contains pheromone(s) which can reduce the postpartum anoestrous period in beef cows with extended anoestrous periods.



Hide All
Albiero, R. H., Schiersmann, G., Caron, N. and Mestie, J. 1987. Effect of a teaser bull on ovarian and behavioural activity of suckling beef cows. Animal Reproduction Science 14: 263272.
Baird, D. T., Swanston, I. A. and McNeilly, A. S. 1981. Relationship between LH, FSH and prolactin concentration and the secretion of androgens and estrogens by the preovulatory follicle in the ewe. Biology of Reproduction 24: 10131025.
Carruthers, T. D. and Hafs, H. D. 1980. Suckling and four times daily milking: influence on ovulation, estrus and serum luteinizing hormone, glucocorticoids and prolactin in post-partum Holsteins. Journal of Animal Science 50: 919925.
Custer, E. E., Beradinelli, J. G., Short, R. E., Wehrman, M. and Adair, R. 1990. Postpartum interval to estrus and patterns of LH and progesterone in first-calf suckled beef cows exposed to mature bulls. Journal of Animal Science 68: 13701377.
Handelmann, G., Razziva, R. and Ray, W. J. 1980. Social dominance determines estrus entrainment among female hamsters. Hormones and Behaviour 14: 107115.
Izard, M. K. and Vandenbergh, J. G. 1982. Priming pheromones from oestrous cows increase synchronisation of oestrus in dairy heifers after PGF–2 injection. Journal of Reproduction and Fertility 66: 189196.
Klemm, W. R., Hawkins, G. N. and de los Santos, E. 1987. Identification of compounds in bovine cervico-vaginal mucus extracts that evoke male sexual behaviour. Chemical Senses 12: 7787.
McClintock, M. K. 1971. Menstrual synchrony and suppression. Nature, London 229: 244245.
Macmillan, K. L., Allison, A. J. and Struthers, G. A. 1979. Some effects of running bulls with suckling cows or heifers during the premating period. New Zealand Journal of Experimental Agriculture 7: 121124.
McNeilly, A. S., Jonassen, J. A. and Fraser, H. M. 1986. Suppression of follicular development after chronic LHRH immunoneutralization in the ewe. Journal of Reproduction and Fertility 76: 481490.
Martin, G. B., Oldham, C. M. and Lindsay, D. R. 1980. Increased plasma LH levels in seasonally anovular Merino ewes following the introduction of rams. Animal Reproduction Science 3: 125132.
Nishimura, K., Utsumi, K., Okano, T. and Iritani, A. 1991. Separation of mounting-inducing pheromones of vaginal mucus from estral heifers. Journal of Animal Science 69: 33433347.
Scott, I. C. and Montgomery, G. W. 1987. Introduction of bulls induces return of cyclic ovarian function in post-partum beef cows. New Zealand Journal of Agricultural Research 30: 189194.
Vandenbergh, J. G. 1988. Pheromones and mammalian reproduction. In The physiology of reproduction (ed. Knobil, E. and Neill, J.). Raven Press Ltd, New York.
Wright, I. A., Rhind, S. M., Whyte, T. K. and Smith, A. J. 1992. A note on the effects of pattern of food intake and body condition on the duration of the post-partum anoestrous period and LH profiles in beef cows. Animal Production 54: 143146.
Zalesky, D. D., May, M. L., Garcia-Winder, M., Imakawa, K., Kittock, R. J., D'Occhio, M. J. and Kinder, J. E. 1984. Influence of exposure to bulls on resumption of estrus cycles following parturition in beef cows. Journal of Animal Science 59: 11351139.


Female-female influences on the duration of the post-partum anoestrous period in beef cows

  • I. A. Wright (a1), S. M. Rhind (a1), A. J. Smith (a1) and T. K. Whyte (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed