Halothane gene(RYR1) could be detected accurately. The gene frequencies of Haln were 9.0% for Landrace, 4.2% for Duroc and 0% for Yorkshire,respectively.

• 在测定的长白、大约克、杜洛克猪中 ；发现长白猪Haln 基因的基因频率较其它品种高 ；为 9.；0%25；杜洛克的为 4