Influence of Different Treatment Protocols on Blood Biochemical Profile and Fertility in Crossbred Cows with Cystic Ovarian Degeneration
THE INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY
The present study was conducted under field conditions on >90 days postpartum HF crossbred cows with cystic ovaries (n=58). The diagnosis was confirmed by history and trans-rectal palpation and ultrasonographic examinations twice at weekly interval using linear array transducer with 5.0-7.5 MHz frequency. The animals with follicular cysts were randomly treated either with conventional Ovsynch or with Ovsynch + CIDR protocol (n=10 each), and those having luteal cysts were treated either with
... ted either with Double PG injections 11 days apart or with modified Ovsynch protocol (n=16 each) with fixed time AI. A group of six cows having ovarian cyst was kept as untreated Control. Estrus response and conception rates at induced estrus/ fixed time AI were recorded. Blood samples were collected simultaneous to hormonal treatments on four occasions, i.e., on day 0 (day of first treatment), on day 7/11/14 (day of last PGF2α inj.), on day of induced estrus/FTAI, and on day 12 post-AI. The estrus induction response noted within 48 to 96 hrs of last PG injection among cystic cows treated with Ovsynch, Ovsynch + CIDR, Modified Ovsynch and Double PG protocols was 90.00, 100.00, 87.50 and 81.25 %, respectively. The conception rates at induced estrus with FTAI in cows under these protocols were 50.00, 40.00, 50.00 and 43.75 %, respectively. The variations in blood glucose, plasma cortisol, total protein and creatinine concentrations between periods of treatment were, however, statistically non-significant in cows under all four protocols, except creatinine in Ovsynch protocol. Furthermore, the effect of treatment/ period was also statistically non-significant among conceived and non-conceived cows in all four treatment protocols, except blood glucose which was significantly higher in non-conceived cows.