滩羊二毛期羊毛性状分析及其相关性研究

doi:10.16431/j.cnki.1671-7236.2019.02.014

Abstract

Abstract:

The aim of this study was to analyze the wool traits and their correlation in Tan sheep during the er-mao period.The samples were collected from 511 individuals (260 rams and 251 ewes) in the primary stage at 30 to 40 days of age (er-mao period).The lateral hair length,the number of crimps of wool collected in the primary and second wool periods were measured,and wool traits were determined including mean fiber diameter (MFD),mean fiber curvature (MFC),coefficient of variation of fiber diameter (CVFD),fiber diameter standard deviation (FDSD) of the heterotypic wool and fine wool.The characteristics of wool about descriptive statistics and correlation were analyzed.The results showed that there was an extremely significant moderate positive correlation between the number of crimps and the lateral hair length in the primary stage (r=0.410,P<0.001).There was an extremely significant moderate positive correlation between the number of crimps in the primary and the number of lateral flexion in the er-mao period (r=0.618,P<0.001).There was a strong positive correlation between FDSD and CVFD of both heterotypic wool and fine wool (r=0.796,P<0.001;r=0.942,P<0.001),respectively;The MFD and FDSD of both heterotypic wool and fine wool were significantly positively correlated (r=0.511,P<0.001;r=0.660,P<0.001),respectively;There was an extremely significant medium positive correlation between MFD and CVFD of fine wool (r=0.410,P<0.001),there was a weak negative correlation between MFD and CVFD of heterotypic wool (r=-0.106,P<0.05);There was a strong significant medium negative correlation between MFD and MFC of fine wool (r=-0.497,P<0.001),and there was a weak positive correlation between MFD and MFC of heterotypic wool,and the correlation was not significant (r=0.011,P>0.05).This study firstly examined the indicators of wool in Tan sheep during the er-mao period,and the correlation between the indicators were determined,which could provide data for the breeding of fur traits in Tan sheep.

Key words: Tan sheep; er-mao period; heterotypic wool; fine wool; wool traits; correlation

CLC Number:

S826.9

LI Xianglong, TAO Jinzhong, DING Wei, GUO Yansheng, LIU Guolin, CHEN Yonghong, LIU Huanhuan. Analysis of Wool Traits and Its Relationship in Tan Sheep During the Er-mao Period[J]. , 2019, 46(2): 442-448.

References

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Analysis of Wool Traits and Its Relationship in Tan Sheep During the Er-mao Period

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