litter size

• 每窝产仔数,同胎生仔数

litter size的用法和样例：

例句

1. In the absence of any other signs of illness in the breeding females, PPV disease can be suspected by increases in mummified pigs and small litter sizes.
   如果一个繁殖母猪群在没有任何其他疾病症状的情况下，持续发生母猪产木乃伊胎数量增加和每窝产仔量下降，应怀疑本病。