Effects of Prior Semen Injections and Weekly Inseminations on Hybridization of Chickens and Turkeys

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Abstract
Eight weekly artificial inseminations of Beltsville Small White turkey hens with Dark Cornish chicken semen were only partially successful in achieving cross-fertilization. Identifiable hydrid embryos were produced only in an 18-day period immediately following the 1st insemination. Intraperitoneal injections of turkey hens with chicken semen in Freund''s adjuvant before artificial insemination by the same semen donors suppressed the ability of their subsequent eggs to undergo hybrid embryonic development. Similar injections of adjuvant alone had no suppressing effect.

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