Use of single or multiple injections of FSH in embryo collection programmes in goats
1993
Batt, P.A. | Cameron, A.W.N. (Monash Medical Centre, Clayton (Australia). Centre for Early Human Development) | Killeen, I.D.
In one experiment on 101 female goats assigned to 10 groups, the mean number of normal embryos collected per goat was significantly greater in an FSH-P treated control group in all except those groups treated with either low or high doses of PMSG combined with a low dose of Ovagen or a low dose of PMSG combined with a high dose of Ovagen. Most goats ovulated and ovulation rates were not significantly different from the mean of the FSH-P control, except for those treated with a low dose of FSH-P combined with either low or high doses of PMSG. Embryo recovery rates were significantly lower in groups treated with a high dose of PMSG combined with a high dose of either Ovagen or FSH-P, or with low doses of PMSG and FSH-P, than in the FSH-P control. Fertilization rates and the proportion of normal embryos did not differ significantly among groups. In a second experiment, in which 10 goats were given the FSH-P control treatment, or an injection of low or high dose Ovagen combined with low dose PMSG, the mean number of normal embryos per goat was not significant. It was concluded the superovulatory protocols based on single injections of FSH combined with PMSG may give similar results in conventional regimens based on multiple doses of FSH.
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