安徽农业科学Issue(12)：7182-7185,4.
1龄大鳞副泥鳅形态性状对体重的影响
Effects of the Morphological Traits on Body Weight of One-year Old Paramisgurnus dabryanus
摘要
Abstract
[Ohjective] To provide theoretical basis for the genetic breeding of Paramisgnrnus dabryanus, [ Method] 249 one-year-old P, dabryanus were randomly sampled, their body weight and eight morphological traits including total length, body length, head length, body width, body height, caudal peduncle lenglh, caudal peduncle height and head width were measured. The correlation coefficients, path coefficients and determinant coefficients of each trait to body weight were estimated by correlation analysis and path analysis in order to analyze the effecl of each trait of P. dabryanus on the hody weight. [ Result ] The correlation coefficients between all traits and body weight were extremely stgnificant( P < 0.01) ; body width produced a predominanl direct effect (0. 236 0) and a highest determinant coefficient (0. 055 7 ) to body weight, so it is the key effective factor, whereas head length and head width provided a slight direct effect (0. 064, 0. 026) and significant indirect effect on the body weight via body width. Through stepwise multi-regression analysis and partial regression coefficient test, the multiple regression equation relating body weight was established as Y = - 12. 126 +0. 342 X1 + 0. 353 X2 + 0. 884X, + 5.059X4 + 2.465 X5 + 0. 979X6 + 1.718X7, in which Y was body weight, X1, X2, X3, X4, X5, X6 and X7 were total length, body length, head length, body width, body height, tail handle length and tail handle height. [Conclusion] The analysis of the effect of traits of one-year-old P. dabryanus to the body weighl and the establishment of the multiple regression equation provided us with some theoretical evidence for the determination of some measured indices during the hereditary breeding of the P. dabryanus. At the same time, in the actual operation process of loach breeding, we can realize indirect weight selection by selection of the body thick and body length of individual.关键词
大鳞副泥鳅/形态生状/体重/通径分析Key words
Paramisgurnus dabryanus/ Morphological traits/ Body weigh/ Path analysis分类
农业科技引用本文复制引用
张樊苗,吕凤琼,王磊,卞刚,凌去非..1龄大鳞副泥鳅形态性状对体重的影响[J].安徽农业科学,2012,(12):7182-7185,4.基金项目
江苏省水产三项目工程项目(PJ2011-62) （PJ2011-62）
苏州大学大学生课外学术科研基金项目(ky2011359b). （ky2011359b）
