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Fertility of young Cashmere goats after laparoscopic insemination

Published online by Cambridge University Press:  27 March 2009

A. J. Ritar  and
P. D. Ball
A. J. Ritar
Affiliation:
Department of Primary Industry, PO Box 180, Kings Meadows, Tasmania 7249, Australia
P. D. Ball
Affiliation:
Department of Primary Industry, PO Box 180, Kings Meadows, Tasmania 7249, Australia
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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.

Type
Animals
Information
The Journal of Agricultural Science , Volume 117 , Issue 2 , October 1991 , pp. 271 - 273
Copyright
Copyright © Cambridge University Press 1991

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References

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