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The objective of the present study was to determine the time of postpartum ovarian cyclicity resumption in ewe using serum progesterone assay. Five multiparous, suckling Ouled Djellal ewes lambed in the winter were used in this study. Ovarian cyclicity resumption was monitored by measuring serum progesterone levels weekly starting one week postpartum for ten week period. Blood samples were collected for analysis of serum progesterone using ELISA test. The results obtained in this study showed that the first rise of the mean progesterone level greater than 1ng/ml was appeared at sixth week post lambing and the postpartum anoestrus interval differs between individual ewes. In one of the five ewes studied until tenth week, ovulation (first progesterone increase) did not occur. In conclusion, progesterone levels showed that there was cyclic ovarian activity resumption soon after lambing in winter-lambing Ouled Djellal ewes indicating that Ouled Djellal ewe’s reproduction in semi-arid area tends to be non-seasonal.

Item Type	Journal
Divisions	» Production animales, biotechnologie et sante » Institute of Agricultural and Veterinary Sciences
ePrint ID	662
Date Deposited	2017-02-08
Further Information	Google Scholar
URI	https://univ-soukahras.dz/en/publication/article/662

@article{uniusa662,
    title={Resumption of Ovarian Cyclicity During Postpartum in Winter-Lambing Ouled Djellal Ewes in Algerian Semi-Arid Area},
    author={Ramzi Lamraoui, Farida AFRI and Zoubir BOUZEBDA},
    journal={Global Veterinaria}
    year={2017},
    volume={18},
    number={1},
    pages={27-30},
    publisher={}
}