二郎山绒山羊体尺、绒毛性状与经济性状的相关及回归分析

doi:10.16431/j.cnki.1671-7236.2015.05.032

Abstract

Abstract: To study the correlation and regression analysis of body size, cashmere traits and economic traits in Inner Mongolia Erlangshan cashmere goat, we selected the 1 000 3-year-old ewe and carried out production performance measurement, and using SAS 9.0 and Excel 2003 softwares for statistical analysis.The results indicated that a significant positive correlation of body height(X₁), body length(X₂), heart girth(X₃) and weight(Y)in Erlangshan goat.Regression model was Y=-12.0856+0.0821X₁+0.4053X₂+0.1624X₃.The intercept and three partial regression coefficient had reached a very significant extent (P<0.01), and indicating the equation was the optimal regression equation.The heart girth was the biggest influence on body weight, and the body height, body length and cashmere fineness impacted on body weight through the heart girth.The body height was biggest influence on cashmere yield and cashmere thickness for the second.We did not find optimal regression model between body height, body length, heart girth, cashmere fineness, cashmere thickness, hair long and cashmere yield.These results indicated the presence of complex intrinsic link between body size, cashmere traits and economic traits in Erlangshan cashmere goat.

Key words: Erlangshan cashmere goat; body size; cashmere traits; economic traits; correlation analysis; regression analysis

CLC Number:

S827.8⁺2

WUDUBALA, LIU Bin, ZHAO Cun-fa, LI Yu-rong, HE Yun-mei, ZHAO Yun-deng, TANG Pei-rong, TIAN Fu. Correlation and Regression Analysis of Body Size,Cashmere Traits and Economic Traits in Erlangshan Cashmere Goat[J]. , 2015, 42(5): 1245-1252.

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Correlation and Regression Analysis of Body Size,Cashmere Traits and Economic Traits in Erlangshan Cashmere Goat

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