Data set of 1261 records of litter size, lamb survival, fertility, pregnancy maintenance and prolificacy from 668 Corriedale ewes and 1188 birth weight records of lambs were used to estimate genetic parameters.

• 本研究利用668 只考力代母羊的产羔数、活羔数、受精力、妊娠维持和多胎性五个繁殖性状的1261 个记录和1188 只考力代羔羊的初生重记录。