Postpartum uterine involution and luteal activity in farafra ewes lambing in autumn

الملخص EN

The study was designed to estimate the time needed for complete uterine involution and postpartum luteal activity in Farafra ewes lambing during autumn (n = 40).

Transrectal ultrasonographic examinations were performed twice weekly after parturition.

Uterine involution and luteal activity were detected ultrasonographically.

Blood sampling (twiCe weekly) was started on d 14 until d 73 postpartum to determine progesterone concentrations.

The mean interval for complete uterine involution was 28.72 ± 1.0 d.

The proportion of ewes that showed the presence of a cyclic CL within 35 d of lambing was 72.5%.

Farafra ewes showed a progesterone concentration greater than 1 ng/ml at 22.0 ± 2.5 d postpartum.

Three out of sis ewes showed more than one short cycle during the observation period.

In this study, it is concluded that the majority of farafra ewes had a complete uterine involution and luteal activity within 35 days post partum during October (lambing season) in the subtropics.