College of Animal Science and Technology, Northwest Agriculture and Forestry University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling 712100, China
Abstract：The genotypes' effects of four polymorphic loci on milk production traits of the Holstein cattles were analyzed using insulin-like growth factor binding protein 3 (IGFBP-3) gene as a candidate gene of milk production traits in Chinese Holstein cattle firstly. The effects of genotypes of κ-cn locus on the traits were not statistically significantly(P>0.05). At IGFBP-3 locus, 305 days milk yield of individuals with genotype BB was higher than that of individuals with genotype AA and AB for 1054.17 kg and 838.15 kg respectively(P <0.05), the protein percent of individuals with genotype AB was higher than that of individuals with genotype BB (P <0.05). Genotype AA of β-lg locus had significantly positive effect on fat/protein ratio, Genotype AB had significantly negative effect on the protein percent. At β-lg gene 5′flanking region, 305 days yield of individuals with genotype AA was higher than that of individuals with genotype AB(P <0.05), the fat percent of individuals with genotype AA was higher than that of individuals with genotype BB(P <0.05), but individuals with genotype BB had higher protein percent than individuals with genotyupe AB(P <0.05)
张润锋;陈宏;雷初朝;房兴堂;孙维斌;胡沈荣;苏利红. 西安地区荷斯坦奶牛群5个基因位点遗传多态性与泌乳性状的相关分析[J]. , 2006, 14(3): 329-333.
ZHANG Run-feng;CHEN Hong;LEI Chu-zhao;FANG Xing-tang;SUN Wei-bin;HU Shen-rong;SU Li-hong. Associations between Genetic Polymorphisms at Five Loci and Milk Production Traits in Xi'an Population of Chinese Holstein. , 2006, 14(3): 329-333.
