Means of egg shape index for genotype JL and JJ, LL, FL of MCW0258 were significantly lower than those of others. The allele J and L of MCW0258 had a significantly negative correlation with egg shape index.

• 标记MCW0258中，JL基因型的蛋形指数均值最低，JJ、LL、FL基因型的蛋形指数均值也较低，并与其它基因型差异显著，说明等位基因J、L可能与蛋形指数存在显著负相关。