The former QTL on chromosome 15 actually comprised two QTLs, which were fine mapped respectively to an interval of 3.2cM and 10.2 cM.

• 原 15号染色体上控制脊髓颈膨大截面积的一个QTL实际包含有两个QTL ；分别位于D15Mit10 7、D15Mit2 0 8附近 ；宽约 3 .；2cM和 10