CORPUS LUTEUM SIZE AND PLASMA PROGESTERONE CONCENTRATION DURING THE ESTROUS CYCLE IN CHEURFA COW OF ALGERIA
Mostapha FERROUK,
Nouria BOUKENAOUI-FERROUK,
Ismail GHARBI,
Djamila BAAZIZ-AMMI,
Djallal ADEL,
Mohamed LAFRI,
Jean Marie EXBRAYAT
Affiliations
Mostapha FERROUK
University Blida 1, Institute of Veterinary Sciences, Laboratory of Biotechnology related to Animal Reproduction (LBRA), BP 270 Road of Soumaa Blida, Algeria
Nouria BOUKENAOUI-FERROUK
1. University Blida 1, Institute of Veterinary Sciences, Laboratory of Biotechnology related to Animal Reproduction (LBRA), BP 270 Road of Soumaa Blida, Algeria.
2. University of Sciences and Technology Houari Boumediene (USTHB), Faculty of Biological sciences, Laboratory of Research on Arid Lands (LRZA), BP 32 El Alia, Bab Ezzouar, 16111, Algiers, Algeria.
Ismail GHARBI
University Blida 1, Institute of Veterinary Sciences, Laboratory of Biotechnology related to Animal Reproduction (LBRA), BP 270 Road of Soumaa Blida, Algeria
Djamila BAAZIZ-AMMI
University Blida 1, Institute of Veterinary Sciences, Laboratory of Biotechnology related to Animal Reproduction (LBRA), BP 270 Road of Soumaa Blida, Algeria
Djallal ADEL
University Blida 1, Institute of Veterinary Sciences, Laboratory of Biotechnology related to Animal Reproduction (LBRA), BP 270 Road of Soumaa Blida, Algeria
Mohamed LAFRI
University Blida 1, Institute of Veterinary Sciences, Laboratory of Biotechnology related to Animal Reproduction (LBRA), BP 270 Road of Soumaa Blida, Algeria
Jean Marie EXBRAYAT
University of Lyon, UMRS 449, General Biology, Reproduction and Comparative Development; Catholic University of Lyon; EPHE, PSL, 10 Place of Archives, F-69288 Lyon Cedex 02, France
The aim of this study was to assess the relationships between the evolution of the corpus luteum size determined by ultrasonography and plasma progesterone concentration in Cheurfa cows during the estrous cycle. Luteal activity was evaluated daily by plasma progesterone concentrations determined by radioimmunassay at each ultrasound examination. The interovulatory interval was 20.5±0.6 days. The corpus luteum clearly delimited 2 days after ovulation reached its maximal size on day 10. The plasma progesterone concentration reached its maximum on days 14. There was a day effect of estrous cycle on corpus luteum size (P<0.0001) and plasma progesterone concentration (P<0.0001). During the growing and regression phases of corpus luteum, a significant correlation was found between plasma progesterone concentration and corpus luteum size. In conclusion, the relationships between the corpus luteum size and plasma progesterone concentrations throughout the estrous cycle in Cheurfa cow were similar to other cattle breeds.
