CAR Central Institute for Research on Buffaloes

Hisār, India

CAR Central Institute for Research on Buffaloes

Hisār, India
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Jerome A.,CAR Central Institute for Research on Buffaloes | Srivastava S.K.,CAR Central Institute for Research on Buffaloes | Sharma R.K.,CAR Central Institute for Research on Buffaloes | Sarkar S.K.,CAR Central Institute for Research on Buffaloes | Kumar R.,CAR Central Institute for Research on Buffaloes
Indian Journal of Animal Sciences | Year: 2017

The present study was conducted to deduce the alteration in follicular dynamics, hormonal and biochemical profile across seasons in buffaloes. In this study, 14 cyclic buffaloes were selected for assessing the follicular dynamics, hormonal and biochemical profile, 7 each during summer and winter. Higher ambient temperature was observed in summer as compared to winter. Nonsignificant difference across seasons with respect to growth rate of follicles and duration of follicular waves was observed. Serum progesterone (P4) showed no significant difference across seasons but differed significantly with respect to days of the estrous cycle in both seasons. Cortisol level did differ significantly from day 4 to day 16 of estrous cycle across seasons. Follicular hormones, viz. estradiol and P4 were significantly higher irrespective of seasons as compared to peripheral level. Follicular biochemical parameters, viz. cholesterol, total protein significantly differed between serum and follicular fluid during summer. Similarly during winter, follicular glucose was higher as compared to serum. In conclusion, season has a significant effect on peripheral cortisol with nonsignificant alterations in follicular dynamics, follicular hormones (E2 and P4) and biochemical milieu across seasons in cyclic buffaloes.


Jerome A.,CAR Central Institute for Research on Buffaloes | Srivastava S.K.,CAR Central Institute for Research on Buffaloes | Sharma R.K.,CAR Central Institute for Research on Buffaloes | Phulia S.K.,CAR Central Institute for Research on Buffaloes
Indian Journal of Animal Sciences | Year: 2017

The present study was designed to study if estrus induction response in anestrous buffaloes is augmented by priming using fabricated progesterone implants. For this study, progesterone implants with dose (150 mg and 350 mg) were fabricated with non-biodegradable, biocompatible polymer following standard protocol. These implants were tested as subcutaneous ear implants in 8 acyclic buffaloes for 7 days. Based on the estrus induction response and serum progesterone profile across days, 350 mg P4 implants were used for trial 2. In trial 2, three groups (8 each), viz. 1 [control: no treatment], 2 [progesterone depot 500 mg i.m. on day 0, progesterone s.c. ear implant (350 mg) on day 4, PMSG 500 IU on day 6 and P4 implant removal on day 7 followed by estrus detection and AI], 3 [progesterone depot 500 mg on day 0 i.m.; PMSG 500 IU i.m. on day 6 followed by estrus detection and AI ] were studied for estrus induction and fertility response. None (0.0%), 7 (87.5%) and 6 (75.0%) buffaloes were induced to estrus in groups 1, 2 and 3, respectively. Serum progesterone on day 7 was significantly higher in group 2 as compared to other groups. In group 2, four buffaloes ovulated out of which 3 conceived as compared to none in group 3. In summary, induction of estrus and ovulation in anestrous buffaloes by synergistic action of progesterone depot and implant ratify the potential scope of fabricated progesterone implants for inducing ovarian cyclicity in anestrous buffaloes.

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