Examinando por Autor "Silva, A. V."

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  • Artículo
    Acceso abierto
    Dinámica folicular y hormonal en vacas criollas de la raza Blanco Orejinegro.
    (2020-04) Narváez-Bedoya, Héctor Javier; Silva, A. V.
    The objective was to characterize the follicular dynamics and the measurement of estradiol during the estrous cycle of cows of the Blanco Orejinegro creole. They were selected 10 cows of the Blanco Orejinegro creole and subjected to estrus synchronization protocol with the implementation of an intravaginal device more 2 mg Progesterone estradiol benzoate via I.M. Eight days later, the device of progesterone was removed and applied 150 μg of cloprostenol. 24 hours later, was administered 1 mg estradiol benzoate. After ovulation, ultrasounds were performed at intervals of 24 hours, throughout the estrous cycle. The length of the estrous cycle was 21 ±0,4 days, the dominant follicle diameter was 7,0± 0,2 mm and 6.7 ± 0,3 mm for the second largest follicle, diameter of the ovulatory follicle 14,3 ± 0,5, growth rate of the dominant follicle during the last 96 hours prior to ovulation was 1,05 ± 0,4 mm per day. In conclusion, the follicular dynamics and hormonal creole cows of the race Blanco Orejinegro (Bos taurus adapted) presented patterns similar to those observed in the races Bos taurus (not adapted) and Bos indicus.