• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

福清山羊快长品系的世代选育及生产性能测定分析

Growth and Reproduction of Newly Bred Fast-growing Fuqing Goats in Two Generations

  • 摘要:
      目的  评估福清山羊快长品系的选育效果。
      方法  对福清山羊连续选育的2个世代后代生长性能及繁殖性能指标进行统计分析。
      结果  结果表明,经过连续2个世代的严格系统选育,福清山羊快长品系各世代核心群的生长性状和繁殖性状均有所提高,其中生长性状的遗传进展和群体整齐度均高于繁殖性状。福清山羊快长品系所产后代的2月龄、9月龄和12月龄的体重指标随着选育世代的增加而逐渐提高,各阶段体重在3个世代间均达到差异显著水平(P<0.05),且各世代相同测定阶段的体重变异系数也呈现逐步减小的趋势(9月龄体重除外)。对比于零世代,二世代2月龄体重、9月龄体重和12月龄体重分别提高了7.45%、11.74%和10.70%。各世代核心群后代的初生体重差异不显著(P>0.05),断奶活羔率和断奶羔羊重均随着选育世代的增加而逐渐提高,3个世代间的断奶羔羊重差异显著(P<0.05),分别为9.42、9.95、10.15 kg。
      结论  经过连续2个世代的系统选育,福清山羊快长品系的生长性状得到了有效改良,实现了快长品系选育的生长性状既定目标。

     

    Abstract:
      Objective  Breeding results on growth and reproduction performances of two generations of a line of fast-growing Fuqing goats were studied.
      Method  Traits on growth and reproduction of the newly bred Fuqing goats in two generations were analyzed.
      Result  After two successive generations of strict and systematic breeding, the growth and reproductive traits of the goats in the core groups were improved. The genetic progress and population uniformity on growth characteristics in two generations tended to be more significant than those on reproduction traits. The body weight indicators on the 2-, 9- and 12-month-old progeny increased with significant differences by the generation (P<0.05). Other than the 9-month-old goats, those of different ages showed a decreasing coefficient of variance on body weight from 0 to the 2nd generation. Compared to the 0 generation, the goats after two generations of breeding had their body weight increased in 2 month by 7.45%, in 9 months by 11.74%, and in 12 months by 10.70%. There was no significant difference on the body weight at birth among the progenies in the core groups (P>0.05). Both surviving rate and body weight of the weaning kids increased with the breeding generation, but the average weights of weaning kids differed significantly among the three generations (P<0.05), as they were 9.42kg for the 0 generation, 9.95kg for the 1st generation, and 10.15kg for the 2nd generation.
      Conclusion  After two successive generations of systematic breeding, the growth of Fuqing goats was effectively upgraded to ensure a reliable breeding program.

     

/

返回文章
返回