摘要
[目的]为研究杂交草鱼一龄阶段的生长和体型特点。[方法]建立长江自交YR(长江群体♀×长江群体♂)、珠江自交ZR(珠江群体♀×珠江群体♂)、杂交F1(长江群体♀×珠江群体♂)3个组合,并对其生长和形态数据进行测量分析。[结果]体重、体长及绝对增重率均为F1>ZR>YR;体重、体长,在50日龄组合间差异不显著(P>0.05),在170日龄组合间差异均极显著(P<0.01);绝对增重率,F1分别比ZR、YR高20.00%、50.00%,F1与ZR差异不显著(P>0.05),与YR差异显著(P<0.05);F1在体重上表现明显的超亲杂种优势(20.09%)。3个组合间,体长/全长差异不显著(P>0.05),头长/全长、体高/体长及体宽/体长差异显著(P<0.05),F1表现头短、体高、体宽等特点。[结论]F1在生长性能和体型特征上均具有优势。
[ Objective ] This study was to study the growth and morphological characteristics of juvenile hybrids of grass carp. [ Method ] Using the Yangtze River stock and Zhujiang River stock grass carp and their hybrids as experimental materials, the growth and mophmetrie parameters of three populations including selfing generations of YR （ Yangtze River stock ♀ × Yangtze River stock ♂ ）, ZR （ Zhujiang River stock ♀ × Zhujiang River stock ♂ ） and hybrids F1 （ Yangtze River stock ♀ × Zhujiang River stock ♂ ） were measured at 50^th and 170^th day after hatched, respectively. [ Result ] The orders of the body weight, body length and absolute growth rates （AGR） were F1 〉 ZR 〉 YR. At the 50^th day, the differences among offsprings were not significant （ P 〉 0.05 ）, at the 170^th day, the differences turned out to be extremely significant （P 〈 0.01 ）. The AGR of F1 was 20.00% and 50.00% faster than those of ZR and YR, respectively ; there were no significant differences （P 〉 0.05 ） between F1 and ZR, while the differences between F1 and YR were significant （P 〈 0.05 ）. F1 showed a significant superparent vigorous rate （20.09%）. There were no significant differences （ P 〉 0.05 ） among three groups in standard length / total length, whereas there were significant differences （ P 〈 0. 05 ） among them in head length / total length, body depth / standard length and body width / standard length, indicating that F1 has the characteristics of shorter head, higher and wider body. [ Conclusion] The new crossbreed F1 is a good variety in growth-performance and physical characteristics.
出处
《安徽农业科学》
CAS
北大核心
2009年第23期11037-11039,共3页
Journal of Anhui Agricultural Sciences
基金
国家大宗淡水鱼类产业技术体系项目
上海市重点学科建设项目(Y1101)
上海市科委基础重大项目(06DJ14003)
关键词
草鱼
杂交
生长性能
体型参数
Ctenopharymgodon idella
Hybridization
Growth traits
Morphmetric parameters
