Bitch fertility after natural mating and after artificial insemination with fresh or frozen semen |
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| Authors: | W. FARSTAD |
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| Affiliation: | Department of Reproductive Physiology and Pathology, The Norwegian College of Veterinary Medicine, P.O. Box 8146 Dep., Oslo 1, Norway |
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| Abstract: | The birth rate and fecundity of 92 bitches of 32 different breeds mated naturally or following artificial insemination of fresh or frozen semen were compared. The birth rate after natural service was 92 per cent compared with 84 per cent when fresh semen was deposited in the uterine body. When frozen semen was inseminated intra-uterine a birth rate of 67 per cent was obtained whilst a figure of 25 per cent was obtained following intra-vaginal insemination of fresh semen. There were no differences in litter size. |
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