Estimation Of Genetic Parameters Of Hair Bearing Traits In Yimeng Angora Rabbits

This study used mengyin benefit of linyi in shandong province breeding co.,LTD.,Angora rabbit breeding accumulation traits in the process of information,through the Angora rabbit at this stage of the production,breeding management system in the actual investigation,determine the current breeding scheme Angora rabbit biology technology parameters,population economics,genetics and breeding,etc.Using animal models with the aid of ASReml software using animal models,and considering gender,year-season,from generation to generation factors,estimated the Angora rabbit wool quantity production and fine maomao,fine wool fiber diameter,length,coarse fiber diameter after shearing properties of genetic parameters such as weight,rate of coarse for improvement,selection of Angora rabbit breeding selection provides a theoretical basis and reference.The results of the basic statistics of the hairbearing traits of yimeng Angora rabbits from the first shearing to the fourth shearing showed that the coefficient of variation of coarse hair rate and wool yield was larger,while the coefficient of variation of fine hair length,weight after shearing,fine hair fiber diameter and coarse hair fiber diameter were smaller.With the growth of Angora rabbits,the diameter of coarse hair fiber,the diameter of fine hair fiber,the amount of hair produced and the weight of Angora rabbits increased accordingly.The proportion of coarse hair is decreasing,the proportion of fine hair is increasing;The average length of fine hair did not change significantly and the relationship with the growth of Angora rabbits was not obvious.The results of variance analysis of hair bearing traits of Angora rabbits showed that gender and year-season effect had different degrees of influence on different times of shearing,while gender effect had no significant influence on the length of fine hair,and had no significant influence on the gross hair rate and hair yield during the first shearing,but had significant influence on other traits during the first to the fourth shearing.In the fixed effect of the year,all the characters were significant in the first to the fourth shearing.It was estimated that the heritability of long-haired rabbits at different times of shearing was mostly of medium heritability(0.20 < h2 < 0.40),and some were of high heritability(h2?0.40).The heritability of fine hair fiber diameter at different times of shearing from one blade to four blades was 0.3768,0.3953,0.4105,0.4951,respectively.The first two blades were of medium heritability.It was estimated that the genetic correlation of five hair traits in Angora rabbits was correlated with phenotype,and there was a positive genetic correlation between coarse hair fiber diameter,fine hair fiber diameter,fine hair length,hair yield and weight after shearing.Among them,the positive genetic correlation and positive phenotypic correlation between fine hair length and hair yield were significant.There was a positive correlation between hair length and body weight after shearing.Except for the first shearing,the body weight after the second to the fourth shearing was positively correlated with the diameter of fine hair fiber,the length of fine hair and the amount of hair produced.In addition,for the first shearing,the genetic correlation coefficient between the diameter of fine wool fiber and wool yield was 0.6554,showing a significant difference.During the third shearing,the phenotypic correlation coefficient between the amount of shearing and the weight after shearing was 0.2874,showing a significant difference.