Asian-Australasian Journal of Animal Sciences
- 제11권5호
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- Pages.486-490
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- 1998
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- 1011-2367(pISSN)
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- 1976-5517(eISSN)
DOI QR Code
Ovarian Follicular Populations Prior to and during Superovulation in Cattle: Relationship with Superovulatory Response
- Manik, R.S. (Embryo Biotechnology Centre, National Dairy Research Institute) ;
- Singla, S.K. (Embryo Biotechnology Centre, National Dairy Research Institute) ;
- Palta, P. (Embryo Biotechnology Centre, National Dairy Research Institute) ;
- Madan, M.L. (l.C.A.R.)
- 투고 : 1997.10.23
- 심사 : 1998.03.30
- 발행 : 1998.10.01
초록
The present study examined the follicular populations prior to and during superovulation and investigated their relationship with superovulatory response in crossbred cattle. Eleven animals were administered i.m. 8 doses of Folltropin of 2.5 ml each (1.75 mg/ml) spread over 4 days beginning on Day 10 of oestrous cycle, and 30 and 20 mg Lutalyse was given alongwith the 5th and 6th injections of Folltropin, respectively, to induce luteolysis. The animals were artificially inseminated 48, 60 and 72 h after the first Lutalyse injection. The number of corpora lutea (CL) was recorded by palpation per rectum and embryos were recovered non-surgically on Day 6 (Day 0 day of superoestrus). The ovarian follicular population was examined by transrectal Ultrasonography 15 h prior to and 52 h after the first FSH injection, and then on the day of superoestrus and the day of flushing. The follicles were classfied on the basis of diameter as small (3-5 mm), medium (6-9 mm) and large (