The result shows that the correlation between the gestational period and lambskin quality was highly significant ( P < 0.01). The proportion of the grade A lambskins from the ewes with gestational period of 144-146 days was higher and its average was 21.63%. 结果表明:怀孕期长短与羔皮品质的相关极显著(P<0.01),怀孕期在144&146天这个阶段所生的羔羊甲级皮比例较高,平均为21.63%;