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Effectiveness of short-term cooling and vitamin E for alleviation of infertility induced by heat stress in dairy cows.

Author(s) : EALY A. D., ARECHIGA C. F., BRAY D. R., RISCO C. A., HANSEN P. J.

Type of article: Article

Summary

In experiment 1, although cooling had no effect on detection of estrus, pregnancy rates were increased slightly for cooled cows (8 of 50 cows; 16%) compared with those for cows exposed to shade only (2 of 32 cows; 6.2%). In experiments 2 through 4, cows were administered 3000 IU of vitamin E or placebo during two consecutive summers and one winter in Florida. Short-term cooling improved pregnancy rates slightly in heat-stressed cows. Further improvements in cooling schemes during early pregnancy and delineation of antioxidant effects are necessary before such systems become practical for improvement of fertility in heat-stressed dairy cows.

Details

  • Original title: Effectiveness of short-term cooling and vitamin E for alleviation of infertility induced by heat stress in dairy cows.
  • Record ID : 1996-0525
  • Languages: English
  • Source: Egypt. J. Dairy Sci. - vol. 77 - n. 12
  • Publication date: 1994/12
  • Document available for consultation in the library of the IIR headquarters only.

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