Heat tolerance of Boran and Tuli crossbred steers.

  title={Heat tolerance of Boran and Tuli crossbred steers.},
  author={John B Gaughan and Terry L. Mader and Simone M. Holt and M J Josey and Kathryn Rowan},
  journal={Journal of animal science},
  volume={77 9},
Experiments were conducted to evaluate the heat tolerance of the following breeds: Hereford (H), Brahman (B), H x B, H x Boran (H x Bo), and H x Tuli (H x T). Heat tolerance was evaluated in a climatically controlled room (Exp. 1) and under summer environmental conditions (Exp. 2) by comparing rectal temperatures (RT), respiration rates (RR), and sweating rates (SW). In Exp. 1, under extremely hot conditions (mean temperature-humidity index [THI] > 90), purebred B had significantly (P < .05… CONTINUE READING


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