Abstract
Summary
Eight weekly artificial inseminations of Beltsville Small White turkey hens with Dark Cornish chicken semen were only partially successful in achieving cross-fertilization. Identifiable hybrid embryos were produced only in an 18-day period immediately following the first insemination. Intraperi-toneal 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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