Department of Animal Reproduction Gynaecology and Obstetrics, College of Veterinary and Animal Science, Rajasthan Agricultural University, Bikaner (Raj.) India.
*Author for correspondence.
**NRC on Camel, Jorbeer, Bikaner.
The embryo recovery following superovulatory (SOV) treatment using equine chorionic gonadotrophin (eCG) and porcine follicular stimulating hormone (FSH) in native Rathi (Bos indicus) cattle was studied. In treatment I (n=33) 2000 IU of eCG was injected on day 8 of the natural estrus. In treatment II (n=17) donors received six 12 h im descending doses of porcine FSH (Super OV, Ausa International, USA) on day 8 to 10 of natural estrus. Animals were induced to estrus by PG injections followed by two inseminations 12 h apart at standing estrus and embryos were recovered by non-surgical means. The overall superovulatory response in the two treatments was 81.8 and 94.1 percent, respectively. Significant (P<0.01) differences were observed between the treatments for the superovulatory response and number of unfertilized ova (UFO) recovered. The results suggest that superovulation and embryo recoveries in native Rathi cattle are better with FSH than eCG.
