XUEWU LI1; RUIJUN WANG1; ZHIYING WANG1; QING NA1; HONGWEI LI1; ZHENYU WANG1; RUI SU2; YANJUN ZHANG2; ZHIHONG LIU2; JINQUAN LI1,2,3,4; LIBIN HE5
1 Inner Mongolia Agricultural University, College of Animal Science, Hohhot, 010018, China
2 Key Laboratory of Animal Genetics, Breeding and Reproduction, Inner Mongolia Autonomous Region, China
3 Key Laboratory of Mutton Sheep Genetics and Breeding, Ministry Department of Agriculture, China
4 >Engineering Research Center for Goat Genetics and Breeding, Inner Mongolia Autonomous Region, China
5 Inner Mongolia Jinlai Animal Husbandry Technology Co. Ltd., China
Xuewu, Li, R. Wang, Z. Wang, Q. Na, H. Li, Z. Wang, R. Su, Y. Zhang, Z. Liu, J. Li and L. He, 2018. Genetic evaluation for fiber length and fiber diameter of Inner Mongolia Cashmere Goats at different staple length. Bulg. J. Agric. Sci., 24 (3): 484–488
The genetic parameters for fleece traits of Inner Mongolian Cashmere Goat at different staple length were investigated. Data was collected with 4178 repeat records from 2008 to 2011 in a breeding farm of Inner Mongolia White Cashmere Goats (IMCGs). IMCGs were divided into three types based on staple length which named short-staple length (SSL), intermediate-staple length (ISL) and long-staple length (LSL). The genetic parameters of fiber length (FL) and fiber diameter (FD) were estimated under the repeatability and multivariate animal model with the AIREML method using the WOMBAT software in the three types. The heritabilities were 0.21±0.04, 0.30±0.03 and 0.39±0.04 for FL of SSL, ISL and LSL, respectively, which belong to moderate heritability. Heritabilities for FD were moderate in SSL, ISL and LSL (0.23±0.03, 0.25±0.0.02 and 0.29±0.04). The genetic correlation between FL and FD were negative in the SSL, ISL and LSL (-0.23±0.01,-0.23±0.03 and -0.48±0.01). Phenotypic and genetic correlations of FL were higher than 0.48 and 0.93 in three types. And the phenotypic and genetic correlations for FD were higher than 0.60 and 0.95 in three types. The results show that the phenotypic selection for staple length are possible to increase the FL and decrease FD and genetic progress can be achieved quickly in IMCGs by selection the LSL as the breeding stock.