探讨微卫星DNA作为皮埃蒙特和南阳杂交牛生长性状的遗传标记  

Studies of Beef Performance Traits in Piemontese×Nanyang Crossbred Using Microsatellites as Genetic Markers

作　　者：曹红鹤[1] 王雅春[1] 陈幼春[1] Y.Zhang L.Ferretti 

机构地区：[1]中国农业科学院畜牧研究所 [2]Istituto per la Difesa e la Valorizzarione del Germplasma Animale CNR via Celoria 1020133 Milano Italy

出　　处：《Acta Genetica Sinica》1999年第6期621-626,共6页

基　　金：国家自然科学基金!39470517

摘　　要：利用最小二乘法拟合线性模型，分析了5种微卫星DNA，IDVGA－2、IDVGA－27、IDVGA－46、IDVGA－55和TGLA－44的不同标记基因型与100头南阳牛、皮埃蒙特牛及其杂交后代的生长性状的关系。结果表明：IDVGA－27的等位基因136与胸围、十字部高、胸深（体尺性状）及腰宽（评分性状）有显著正相关，而等位基因142与上述各项均有显著的负相关；在IDVGA－46中，含有等位基因205的个体在腰厚的肌肉发育方面有明显的优势；而等位基因211却与肩部发育有负相关，该等位基因在纯种皮埃蒙特牛中不存在。IDVGA－55的等位基因203与体高、体长、十字部高及尻宽等体尺性状有显著正相关关系。Five microsatellites, IDVGA-2, IDVGA-27, IDVGA-46, IDVGA-55 and TGLA-44 were associated to beef Performance traits of 100 heads of Nanyang cattle, Piemontese and their hybrid cattle using general linear model (GLM) with statistical analysis system (SAS). For microsatellite IDVGA-27, allele 136 had a positive relation with heart girth, height at hip cross and chest depth (body measurements) and loin width (muscularity evaluation); however, allele 142 showed a significant negative correlation with above performance traits. For IDVGA-46, the individuals with allele 205 had a good muscular development at loin width, on the contrary, the allele 211, which was not found in Piemontese cattle, had a negative correlation with shoulder development.Allele 203 (IDVGA-55) had a positive association with body measurement parameters including wither height body length, height at hip cross and rump width.

关 键 词：微卫星DNA 遗传标记 生长性状 基因型 表现型 牛 

分 类 号：S823.2[农业科学—畜牧学] S823.92[农业科学—畜牧兽医]