Open AccessEstrus Induction Response Vis-a-Vis Serum Progesterone and estradiol 17-β Profile in Postpartum Subestrus Surti Buffaloes Primed with Heatsynch Alone and Heatsynch plus PRID Protocol
Author(s) -
C. T. Khasatiya,
Swati Saxena,
H. R. Savani,
M. D. Patel,
K. K. Tyagi,
Virendra Singh
Publication year - 2017
Publication title -
the indian journal of veterinary sciences and biotechnology
Language(s) - English
Resource type - Journals
eISSN - 2395-1176
pISSN - 2394-0247
DOI - 10.21887/ijvsbt.v12i4.7673
Subject(s) - estradiol benzoate , estrous cycle , medicine , zoology , endocrinology , hormone , andrology , biology , ovariectomized rat
This study was conducted on 18 subestrus Surti buffaloes at University farm to estimate steroidhormone values before, during and after use of Heatsynch (T1) and Heatsynch+PRID (T2) protocols.In the Heatsynch protocol (n=6), buffaloes were administered intramuscularly with inj. Busereline- GnRH analogue on day 0, inj. Cloprostenol sodium-PGF2α analogue on day 7 and inj. EstradiolBenzoate (EB-) on day 8. In the Heatsynch+PRID protocol (n=6), PRID was inserted intra-vaginallyand kept in situ for 7 days with inj. Buserelineon day 0. The PRID was removed on day 7 togetherwith inj. of Cloprostenol and inj. EB was administered on day 8. FTAI was done twice on day 10in both the groups. No treatment was given to control (n=6) group (T3). The estrus response was100% in all three groups, but the conception rate at first cycle/service was 50.00, 66.66 and 33.33%,respectively, in three groups. The mean plasma progesterone concentrations were significantly loweron day of estrus (0.26±0.05, 0.63±0.07and 0.58±0.08 ng/ml in T1, T2 and T3 respectively) ascompared to the corresponding values on day 0, 4, 8 of treatment and 18 post-AI in all the threegroups.The mean values of estradiol-17β markedly increased (p less than 0.01) on the day of estrus intreatment groups T1 and T2 (43.45±1.42 pg/ml and 42.86±1.53 pg/ml) than control group T3 (35.74±0.63pg/ml) and thereafter markedly decreased at 18th day post-AI in all the groups (17.93±4.49;16.34±2.14; 25.52±3.10 pg/ml) with non-significant difference.