Adrenal involvement in the biostimulatory effect of bulls |
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Authors: | Shaun A Tauck Jesse R Olsen James G Berardinelli |
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Institution: | (1) Department of Animal and Range Sciences, Montana State University, 119 Linfield Hall, 59715 Bozeman, MT, USA |
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Abstract: | Background The objective was to evaluate if cortisol concentrations are associated with the resumption of luteal activity in postpartum,
primiparous cows exposed to bulls. The hypotheses were that 1) interval from start of exposure to resumption of luteal activity;
2) proportions of cows that resumed luteal function during the exposure period; and 3) cortisol concentrations do not differ
among cows exposed or not exposed to bulls (Exp. 1), and cows continuously exposed to bull or steer urine (Exp. 2). |
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Keywords: | |
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