Fertility of young Cashmere goats after laparoscopic insemination
- 1 August 1991
- journal article
- animals
- Published by Cambridge University Press (CUP) in The Journal of Agricultural Science
- Vol. 117 (2) , 271-273
- https://doi.org/10.1017/s0021859600065382
Abstract
SUMMARY: Maiden 18-month-old Cashmere does (JV=254) were inseminated laparoscopically with frozenthawed semen after treatment with Controlled Internal Drug Release devices and pregnant mare's serum gonadotrophin (PMSG) in the breeding season of 1989 in Tasmania. Kidding rates(does kidded/inseminated) were not statistically different after the insemination of 1, 5 or 25 × 106 motile spermatozoa (50·0, 55·8 and 56·4%), andfor semen frozen by the pellet or straw methods (56·8 and 50·8%). The fertility results suggest that the critical threshold may not have been reached at 1 × 106 frozen-thawed motile spermatozoa.Keywords
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