Open AccessEffect of GnRH on Ovarian Activity in Postpartum Anestrus Sahiwal Cows
Author(s) -
A.K. Chaturvedani,
Dilip Paikra,
Rupasi Tiwari,
Choodamani Chandrakar
Publication year - 2018
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.14.3.14
Subject(s) - estrous cycle , corpus luteum , ovulation , saline , zoology , ultrasonography , medicine , biology , andrology , endocrinology , ovary , hormone , surgery
A total of 14 Sahiwal cows were selected from bull mother experimental farm, Anjora, Durg with more than 65 days postpartum anestrus were randomly divided into two groups. Animals (n = 7) of treatment group were given injection GnRH @ 10 μgintramuscularly on day 0, while those (n=7) of control group were given 2.5 ml normal saline intramuscularly. The animals in both the groups were monitored at three days interval for 24 days, i.e., on day 0, 3, 6, 9, 12, 15, 18, 21 and 24 usingtrans-rectal ultrasonography (5-7.5 MHz) for development of ovarian follicles, ovulation and corpus luteum formation. Significantly larger follicles were observed on day 3, 12 (p less than 0.05) and 24 (p less then 0.01) in GnRH treatment group thancontrol group, suggesting folliculogenic and ovulatory effect of GnRH over 3-12 days period, with establishment of cyclicity in anestrus cattle.