1. Progesterone supplementation during multiple ovulation treatment in buffalo species (Bubalus bubalis).
- Author
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Neglia G, Gasparrini B, Vecchio D, Rubessa M, Di Palo R, Zicarelli L, and Campanile G
- Subjects
- Administration, Intravaginal, Animals, Female, Italy, Progesterone administration & dosage, Buffaloes physiology, Embryo Transfer veterinary, Ovulation Induction methods, Ovulation Induction veterinary, Progesterone pharmacology
- Abstract
The aim of this study was to evaluate the effect of exogenous progesterone supplementation on superovulatory response in buffaloes that has undergone a multiple ovulation program. Fourteen Mediterranean buffaloes were divided into two groups and received a 4-day decreasing dosage of an equal mixture of 500 IU of FSH and LH starting on day 8 of the cycle. In group A (n = 7) a progesterone-releasing intravaginal device was removed on day 8, whereas in group B (n = 7) it was left till day 10, when PGF2alpha was administered. Eighty hours later, buffaloes were artificially inseminated and after 6 days they undergone uterine flushing. A higher (P < 0.05) number of corpora lutea (8.3 vs. 5.7) and embryo/flushing/buffalo (2.3 vs. 1.3) were recorded in group B vs. group A if responsive buffaloes are considered (n = 12) and the number of corpora lutea was highly correlated with the number of embryos (r = 0.65; P < 0.05). In conclusion, progesterone supplementation during the first 2 days of the superovulation treatment seems to enhance the recovery rate in buffalo species. A high ovulation rate, associated with a high number of corpora lutea, can represent a parameter for estimating embryo recovery.
- Published
- 2010
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