National;
Engineering;
Laboratory;
for;
Animal;
Breeding;
Key;
Laboratory;
of;
Animal;
Genetics,;
Breeding;
and;
Reproduction,;
Ministry;
of;
Agriculture;
of;
China;
College;
of;
Animal;
Science;
and;
Technology,;
China;
Agricultural;
University,;
Beijing;
100193,;
China;
mRNA结构; 泌乳奶牛; 剪接; 变体; 实时定量RT-PCR; 半定量RT-PCR; 识别; 基因鉴定;