鸡羽速自别雌雄品系生产性能的研究

研究三个快羽系A、B、C和三个慢羽系α、β、γ及它们的自别雌雄杂交鸡Cβ、Bβ、Aβ、Cα、Bα、Aα、Cγ、Bγ、Aγ的早期生长和产蛋性能,并探讨了C、α系和A、β系羽毛生长速度(快慢羽速)与生产性能的关系。结果表明,杂交后代产蛋性能明显得到提高,并表现出明显的羽速效应,而且羽速效应因品种(系)的不同而异。九组杂交鸡产蛋性能均表现较好,具有较高的优势率,其体重均低于其双亲均值。

STUDY ON THE PERFORMANCE OF SOME RAPID-AND SLOWFEATHERING CHICKEN STRAINS AND THEIR AUTOSEXING HYBRIDS

This paper reprots the results of the experiments on performance of sexlinked rapid- and slow- feathering chicken strains and their autosexing hybrids. Sex purelines and their nine crosses were used to study their body weight up to 10 weeks of age, age at first egg, number of egg size and egg mast of 300 days of age, egg quality traits at 34 weeks of age. The effects of feathering on the performance in a general purpose breed between rapidfeathering line C and slow - feathering line α and in a egg type breed between rapid—feathering A and slow — feathering β were determined.Results indicated that the egg production of nine cross combinations exhib ted significant heterosis, with hybrids Aα and Aβ excellent. Rapid-feathering line C grew faster than slow-feathering line C, while chicks of lines A aad β were just the opposite pattern.