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Fertility in bitches artificially inseminated with extended, chilled semen
C R Pinto1, D L Paccamonti, B E Eilts
1Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803, USA.
Abstract:
Sixteen bitches were artificially inseminated with either fresh, 24 h-chilled or 48 h-chilled extended semen over 38 estrous cycles. A commercial system for extending, chilling and transporting semen commonly used in the equine industry was used Pregnancy rates and litter sizes of the bitches inseminated with extended, chilled semen (19/20, 95%; litter size = 7.1) were not significantly different from those observed in bitches inseminated with fresh semen (17/18, 94%; litter size = 7.2; P > or = 0.89). These results show that a commercial system for extending, chilling and transporting equine semen is an attractive and efficient method of shipping canine extended chilled semen.