Relative Heat Tolerance Among Cattle of Different Genetics

  title={Relative Heat Tolerance Among Cattle of Different Genetics},
  author={T. M. Brown-Brandl and John Anthony Nienaber and R. A. Eigenberg and Terry L. Mader and Julie L. Morrow and Jeff W. Dailey},
Heat stress in cattle causes millions of dollars of losses each year due to production losses, and death losses in extreme cases. A study was designed to determine severity of heat stress among four genotypes of cattle. One-hundred twenty-eight feedlot heifers of four different genotypes were observed throughout a typical summer. Respiration rates, panting scores, and surface temperatures were taken twice a day on 10 animals/genotype for several weeks during the summer. Twenty-four hour… CONTINUE READING