Seasonal Variations in Luteal Dynamics and Serum Progesterone Levels in Murrah Buffaloes
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Authors
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Jisna K.S
Animal Reproduction Division, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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Atul S. Rajput
Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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Nivetha P
Animal Reproduction Division, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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Sujata Jinagal
Animal Reproduction Division, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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M.M. Rafiq
Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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A.K. Pandey
ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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A.K.S. Tomar
Livestock Production and Management Section, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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S. K. Ghosh
ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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S.K. Singh
Animal Reproduction Division, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
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M. K. Patra
Animal Reproduction Division, ICAR-Indian Veterinary Research Institute, Izatnagar, U.P., 243 122
Keywords:
Murrah buffalo, breeding season, corpus luteum, progesterone, ultrasonographyAbstract
Domestic buffaloes exhibit distinctive breeding patterns that are influenced by seasonal variations. The hot and humid summer season influence reproductive performance affecting by modulating corpus luteum (CL) dynamics and functionality. The present study describes the changes in CL dynamics and serum progesterone (P4) profiling during the breeding (October to February) and non-breeding seasons (April to August) in the Murrah buffaloes (n=6/group). The CL morphometry was recorded using trans-rectal B-mode ultrasonography and blood samples were collected every day for serum P4 estimation using commercial ELISA kit. There was no significant difference observed in CL diameter although the growth and regression rates were higher during the breeding season and luteal regression started earlier in the non-breeding season. The peak P4 concentration was notably higher during the breeding season as compared to the non-breeding season. Additionally, a strong positive correlation between CL diameter and P4 concentration was evident during the breeding season in contrast to the non-breeding season. From this study, it can be concluded that sub-optimal luteal development and function during the non-breeding season could be the key contributing factor associated with poor reproductive performance in buffaloes.
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References
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