ORIGINAL RESEARCH article
Front. Anim. Sci.
Sec. Animal Physiology and Management
Volume 6 - 2025 | doi: 10.3389/fanim.2025.1608654
Responsiveness to exogenous gonadotrophin on post-partum fertility during breeding and non-breeding seasons in buffaloes
Provisionally accepted
- 1Central Institute for Research on Buffaloes (ICAR), Hisar, India
- 2Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
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The present study was designed to investigate the responsiveness to exogenous gonadotrophin on post-partum fertility during breeding and non-breeding seasons in buffaloes. For the study, during breeding season, twenty-two post-partum buffaloes that calved between September-February were included in this group and were further divided into two groups i.e. treatment (n=12) and control (n=10). Buffaloes in treatment group received exogenous GnRH analogue (Receptal; 10 µg Buserelin acetate, I/V) on day 21 post-partum whereas control group received no treatment. During non-breeding season, post-partum buffaloes (n=20) that calved between April-August were divided into two groups i.e. treatment (n=10) and control (n=10) and treatment group received exogenous GnRH analogue (Receptal; 10 µg Buserelin acetate, I/V) on day 21 post-partum. During breeding season, average pre-treatment LH concentration was similar in both treatment (1.7±0.3 ng/ml, n=8) and control (1.2±0.2 ng/ml, n=8) groups. During non-breeding season, pre-treatment LH concentration was comparable in both treatment (0.8±0.1 ng/ml, n=8) and control (0.9±0.2 ng/ml, n=8) group. The basal level of LH was low (P<0.05) during non-breeding season as compared to those during breeding season (0.88±0.1 ng/ml, n=16 vs 1.44±0.2 ng/ml, n=16). GnRH administration on day 21 post-calving has been found to improve the early resumption of cyclicity during breeding calved (83.3%) and non-breeding calved buffaloes (80%) by day 28 post-partum. Administration of GnRH helped in resuming early cyclicity in all animals during both seasons. Following GnRH administration, cyclicity was resumed in 82% of treatment group and 45% in control group on day 28 post-calving. By day 60 post-partum, 95.5% and 75% buffaloes of treatment and control group respectively, resumed cyclicity. GnRH administration on day 21 post-calving did not influence the conception rate as overall conception rate within 3 inseminations were similar in both treatment and control groups during breeding season (75% vs 70%). In conclusion, administration of GnRH post-partum aids the early resumption of ovarian cyclicity and reduction in days open in buffaloes, irrespective of season.
Keywords: Buffalo, GnRH, Breeding, Season, Fertility
Received: 09 Apr 2025; Accepted: 06 Oct 2025.
Copyright: © 2025 Kumar, Phogat, Sharma, Phulia and ANDONISSAMY. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Rakesh Kumar Sharma, rakesh.sharma@icar.gov.in
JEROME ANDONISSAMY, jerome210982@gmail.com
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