我场从一九七○年进行了仔猪移窝并窝实验。一九七一年开始在生产上全面应用。目前仔猪移窝并窝已纳入饲养管理程序,成为提高生产效益的手段之一。九年来共移108窝,移仔猪317头,占产仔窝数11%,占产仔数6%,仔猪成活率提高5%,仔猪个体重,双月断乳窝重,出种率也均有相应的提高。一、实践意义母猪产仔具有不均衡性。产仔少的母猪,生产性能不能很好发挥,产仔多的母猪,由 In 1970, we conducted a piglet litter and nest trial. In 1971 began full application of production. At present, the relocation of piglets and litters has been incorporated into the feeding and management procedures and has become one of the means to increase production efficiency. In the past nine years, a total of 108 farms were relocated, 317 piglets were relocated, accounting for 11% of the litter size, 6% of the litter size and 5% of the piglet surviving rate. Individual weight, litter size, There is a corresponding increase. First, the practical significance of sow litter size is not balanced. Fewer litter sows, production performance does not play well, farrowing sows, by