THE INDUCTION OF OESTRUS AND OVULATION IN THE BITCH USING PREGNANT MARE SERUM GONADOTROPHIN AND HUMAN CHORIONIC GONADOTROPHIN |
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Authors: | P. J. Wright |
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Affiliation: | Department of Veterinary Clinical Sciences, University of Melbourne, Werribee 3030 |
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Abstract: | Seventeen bitches (11 anoestrous, 4 prepubertal, 1 pregnant and 1 postpartum) were treated with pregnant mare serum gonadotrophin (110 iu/kg) at weekly intervals up to the occurrence of oestrus or a maximum of 3 treatments. Oestrus was induced in 8/11 anoestrous bitches only. The between bitch ovarian response was very variable. Ovulation occurred in 7/8 PMSG induced oestrous bitches. The 3 oestrous bitches treated with human chorionic gonadotrophin (500 iu) at the start of oestrus had a better ovulatory response than those treated with PMSG alone. |
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