鸡的DNA指纹与屠宰性能的相关性研究  

Studies of the Correlations Between DNA Fingerprints and Meat Production Traits in Chickens

作　　者：王金玉[1] 龚允陈[1] 陈国宏[1] 陈宽维[2] 

机构地区：[1]扬州大学农学院动物科学系,扬州225009 [2]江苏省家禽科学研究所,扬州225003

出　　处：《Acta Genetica Sinica》1999年第4期324-328,共5页

基　　金：江苏省自然科学基金

摘　　要：利用SR92A系鸡与萧山♀鸡的杂交一代群体，以EA（禽内源性反转录病毒片段）为探针，限制性内切酶为EcORI，探讨DNA指纹与若干屠宰性能之间的相关性。结果表明EAV指纹图谱中，长度约为4kb的条带J与SR92A系×萧山鸡杂交后代75日龄的活重、屠宰重、半净膛重、爪重、胸肌重、头重、大腿重有显著负相关，无J带的个体与有J带的相比，75日龄活重平均高出280克，屠宰重高出257克，半净膛重高出216克，胸肌重高出16．71克，分别高达28．57％、28．87％、28．76％和54．00％。若在亲本中选择无条带J的个体建立无J带的后代群体，根据算式：△W＝（XJ-－XJ+）×N×FJ+预测，选择效果和经济效益显著。This study revealed correlations between DNA fingerprints (DFPs) and slaughter traits of SR92A × Xiaoshan ♀ hybrids with EAV (endogenous avian retroviral element) as the probe. In the DFP patterns, the band J with molecular weight of about 4 kilobasepairs correlated significantly with alive weight dressing weight,semi-eviscerated weight talon weight, breast muscle weight head weight and thigh weight. The mean alive weight dressing weight semi-eviscerated weight and breast muscle weight are 2809 (28.57%), 2259(28.87%),2169(28.76%) and 16.71g(54.00%)higher respectively in individuals without band J than in those with band J. With the following formula:, it was estimated that an addition of 165.2 kilograms of alive weight can be achieved in a hybrid population with size of 1000 chickens established by selecting parents without band J.

关 键 词：DNA指纹 遗传标志 鸡 屠宰性能 

分 类 号：S831.2[农业科学—畜牧学]