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Published on: September 20, 2021
Maternal effects and heterosis for growth in reciprocal cross populations of chickens
G Liu1, E A Dunnington, P B Siegel
1Department of Poultry Science, Sichuan Agricultural University, Yaan, Sichuan, P.R. China Poultry Science Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia U.S.A.
Summary:
Two lines of chickens differing greatly (6- to 8-fold) in 8-week body weight due to divergent selection for this trait were crossed reciprocally from generations 29 through 36. The crosses showed two consistent characteristics: large maternal effects and no positive heterosis. ZUSAMMENFASSUNG: Maternalwirkungen und Heterosis für Wachstum in reziproken Hühnerkreuzungen Zwei im Hinblick auf 8-Wochen-Gewicht sehr stark unterschiedliche (6- bis 8fach) Linien wurden reziprok in den Generationen 29-36 des divergenten Selektionsversuches gekreuzt. Die Kreuzungen zeigen zwei konsistente Phänomene: große Maternalwirkungen und keine positive Heterosis.
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