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Physiological indices of dairy heifers during the dry and rainy seasons


Zootecnia Tropical 7(1-2): 43-68
Physiological indices of dairy heifers during the dry and rainy seasons
Rectal temp., pulse rate and respiration rate were determined daily for 14 days during the dry and rainy seasons in 7 Holstein, 7 Holstein X zebu and 9 Brown Swiss X zebu heifers in Venezuela, aged 20-30 months. Breed type had a highly significant effect on rectal temp., pulse rate and respiration rate, with Brown Swiss crossbreds showing the greatest heat tolerance, followed by Holstein crossbreds and purebreds.


Accession: 002185424



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