Analysis of correlation and difference of target traits in fine wool sheep breeding
[Objective]To study the correlation and difference between the breeding target traits of Subo merino sheep and Chinese merino sheep(Xinjiang type)ewes,and to analyze the genetic rules between traits,in order to provide a theoretical basis for the breeding planning of Xinjiang fine wool sheep.[Methods]A total of 1,546 ewes were collected,measured and sorted out(Subo merino sheep:497;Individual identification and shearing records of Chinese merino sheep(Xinjiang type):1,049 animals),and the laboratory completed the determination of mean fiber diameter,fiber diameter standard deviation and fiber diameter coefficient of varia-tion.SPSS 25.0 software was used to descriptively collect the data of wool traits(mean fiber diameter,standard deviation of fiber diameter,fiber diameter coefficient of variation,hair length,shearing amount),reproductive traits(birth type)and growth traits(physical score,weight at time of identification),and clarify the correlation between traits,and in addition to that,one-way analysis of variance(ANOVA)was applied to compare the differences between different breeds and birth types.[Results]There were no significant differences between birth types of Subo merino sheep and Chinese merino sheep(Xinjiang type)and related hair traits(mean fiber diameter,standard deviation of fiber diameter,fiber diameter coefficient of variation and hair length)and growth traits(physical score and weight at identification)(P>0.05),and the body weight of Subo merino sheep and Chinese merino sheep(Xinjiang type)were significantly correlated with the average fiber diameter,hair length and shearing amount(P<0.01),there were different degrees of correlation between the hair traits.[Conclusion]The Subo merino sheep were better than that of the Chinese merino sheep(Xinjiang type)in the wool traits(mean fiber diameter and fiber diameter standard deviation)and growth traits(weight at time of iden-tification),and the average fiber diameter ranged from 16.86-19.01 μm,which was a high-quality ultra-fine wool sheep.
万方数据
维普
