【摘要】 本研究将鲤鲫移核鱼进行有性杂交,使其遗传性状得到改良,效果显著。试验材料为鲤鲫移核鱼 F₂?（以下简称移核鱼）和散鳞镜鲤?（以下简称镜鲤）,经杂交获 F₁（以下简称颖鲤）。当年颖鲤个体增重平均比双亲快 47％,群体增重平均快 109％;二冬龄个体增重平均快60.1％,群体增重平均快75.11％。颖鲤含肉率为74.58％,移核鱼和镜鲤为61.7％与72.21％。颖鲤和父母本肌肉蛋白质含量分别为18.35％,17.37％和16.95％。模糊数学聚类分析表明,颖鲤及其反交在体高、体厚、头长等性状均偏向移核鱼,尤其偏向其雌性个体。更多还原

【Abstract】 The study is emphasized on the characteristics of the hybrid （de-nominated Ying hybrid） of female mirror carp crossed with CyCa F2 hybrid. Theyearling Ying hybrid exhibited an average 47-109% better growth in weight thanthe parental individuals, and two-winters old individuals increase 60.1% and75.11% respetively. In polyculture of 525-1200 Ying hybrid fish of 1（1:2） inches inlength in a fingerling pond per ha, they can reach the weight of 618-1300g, withthe biggest being 2.4kg. The Ying hybrid not only grows faster but also is easierto maintain and produce than tri-cross hybrid carp. It is suitable to be popularizedamong fish-culture industries. The Ying hybrid contains 74.58% of flesh, butCyCa F₂ hybrid and mirror carp only contain 61.7% and 74.2% respectively. Themusculian protein contents of the Ying hybrid, CyCa F₂ Hybrid and Mirrorcarp are 18.35%, 17.37%and 16.95% respectively. By means of cluster analysis of fuzzy mathematics, it comes to a conclusionthat the Ying hybrid and its reversely crossed one are more alike to CyCa F₂hybrid, especially to the female in characters such as body depth and width andhead length. The experiment has shown that the approach to combine biotechno-logy with the traditional selective breading techniques is feasible and can achieverather satisfactory economic benefits.更多还原