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光周期诱导红腹锦鸡冬季繁殖效果初报

张录强;杨振才;孙儒泳

  ?College of Life Science, Hebei Normal University, Shijiazhuang050016, China)Golden pheasant (Chrysolophus pictus)is a monotypic and special species of China.In nature, it breeds once a year in springsummer.From Oct.1998 to Feb.1999, we studied the effects of photoperiods on inducing the birds to reproduce in winter and succeeded.In the experiment, 36 adult females and 18 males were divided into three groups.Each group was divided into 6 replicates, each replicate included 2 females and 1 male, and fed in one cage.All the groups were exposed to shortday (8L∶16D) for 8 weeks, and then transferred to long day (12L∶12D,14L∶10Dor 16L∶8D).In result, photoperiods significantly affected Golden pheasant reproductive performance in winter.Considered of all of the reproductive performance indicators, the reproductive performance of the group exposure to14L∶10Dwas the best, the 16L∶8D group s was less and the 12L∶12D group s was the worst.It may be that the birdsCDL (critical daylength) for inducing egg production was about 12 h, and the CDL for optimal egg production was 14L∶10D in winter.The birds exposed to 12L∶12D had no fertilized egg.The other groups had fertilized eggs and the fertility was 1505% (14L∶10D) and 2041% (16L∶8D).The hatchability of fertilized egg were 7647% (14L∶10D) and 8000% (16L∶8D).The egglaying pattern was affected by the size of photoperiod.The ratio of lay of the birds exposed to14L∶10D,increased rapidly and sustained in a peak level for 5 weeks, and then fall down.But the other birds (group A and C) increased to the peak at the first week and then fall down quickly.……   
[关键词]:红腹锦鸡;光周期;繁殖;冬季
[文献类型]:期刊
[文献出处]: 《动物学报2001年06期
[格式]:PDF原版; EPUB自适应版(需下载客户端)