Reanudación de la actividad ovárica posparto en ovinos en el trópico alto Colombiano / Resumption of postpartum ovarian activity in sheep in the Colombian high tropics
DOI:
https://doi.org/10.34188/bjaerv4n2-071Palavras-chave:
Anestro posparto, Ciclo estral, Preñez temprana, Progesterona, Ovinos trópicoResumo
Se evaluó el comportamiento de la condición corporal, peso vivo y niveles de progesterona en el posparto durante el periodo de reanudación de la actividad ovárica, en función del tipo racial (Criolla Colombiana, Romney Marsh, Hampshire y Corriedale) y tipo de parto (sencillo y múltiple) en 32 hembras ovinas. La estadística se realizó bajo un modelo de estructura factorial, usando el paquete SAS. Dentro de los resultados se encontró que la condición corporal y el peso empiezan a recuperarse a partir del día 21, siendo la Criolla y la Romney Marsh las que inician más tempranamente; el tiempo de reactivación ovárica posparto fue de 31,8 ± 14,1 días en promedio, sin presentar diferencias significativas dentro de los grupos evaluados. El tipo de parto presentó un efecto significativo en el intervalo parto primera ovulación (P<0,002), intervalo parto primer estro observado (P<0,015), intervalo parto primer ciclo regular (P<0,006) e intervalo parto inicio de la ciclicidad (P<0,031), siendo las hembras con parto simple las de una reanudación ovárica más temprana. En la interacción tipo racial*tipo de parto no se encontraron diferencias significativas para las variables medidas (P>0,05). Este estudio permitió validar el efecto del tipo de parto sobre la reactivación ovárica posterior al parto, siendo las hembras de parto sencillo quienes se recuperan más rápidamente.
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