Progesterone-based timed AI protocols for Bos indicus cattle I: Evaluation of ovarian function.
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DOI: 10.1016/j.theriogenology.2020.01.030
Abstract: Three experiments evaluated ovarian dynamics and circulating progesterone (P4) during P4-based protocols initiated with GnRH, estradiol benzoate (EB), or no additional treatment in Nelore (Bos indicus) cattle. In Exp 1 (n = 59 cows), a 5-d P4-only… read more here.
Keywords: wave emergence; bos indicus; progesterone based; pgf ... See more keywords
Progesterone-based timed AI protocols for Bos indicus cattle II: Reproductive outcomes of either EB or GnRH-type protocol, using or not GnRH at AI.
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DOI: 10.1016/j.theriogenology.2020.01.033
Abstract: The aim of these experiments was to study ovarian dynamics and fertility of Bos indicus beef cattle submitted to 7-d progesterone (P4)-based fixed-time AI (FTAI) protocols using different hormonal treatments. In Exp. 1, 2 yr old… read more here.
Keywords: bos indicus; progesterone based; heifers received; gnrh gnrh ... See more keywords
Effect of treatment of phantom cows with a progesterone-based synchrony programme
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DOI: 10.1080/00480169.2020.1745109
Abstract: ABSTRACT Aim: To determine the effect of a progesterone-based synchrony programme on the daily hazard of conception and the probability of being pregnant at the end of the seasonal mating period in cows not observed… read more here.
Keywords: treatment; phantom cows; based synchrony; progesterone based ... See more keywords