Abstract:  To achieve intelligent feeding, userfriendly humancomputer interaction, and easy maintenance for lactating sows, a set of intelligent and precise feeding systems for lactating sows was designed. This system includes an intelligent feeder, a handheld personal digital assistant terminal, a central controller, and a CANBus bus. It enables convenient onsite management of pig entry and exit management, dynamic monitoring of pig status, and realtime alarm functions for abnormal conditions. In a largescale sow farm in Yunnan Province, 280 intelligent feeders for lactating sows were installed, and a production performance comparison test was carried out with the production line equipped with traditional feeding. The test results showed that intelligent feeding facilitates realized userfriendly humancomputer interaction, touchsensitive feeding, intelligent wet mixing, noncontact operation, and easy maintenance. Compared with traditional feeding, intelligent feeding increased the average daily feed intake of sows by 0.673kg and reduced the daily feed waste by 0.345kg, indicating significant differences (P<0.01) in the average daily feed intake and daily feed waste at different ages between intelligent feeding and traditional feeding. The number of healthy piglets per month increased by 10.44%, the number of healthy piglets per litter increased by 0.69, and the average weight of weaned piglets at 21 days increased by 0.370kg. The backfat loss of lactating sows decreased by 34.43%, and the 7-day weaning estrus rate increased by 4%. The return on investment analysis of the system demonstrated that intelligent feeding effectively reduces feed waste, improves production performance, and has a high return on investment, which can effectively help largescale pig farms reduce costs. This study provides a reference for the development and application of intelligent feeding systems for sows.

Key words: lactating sows, intelligent feeding, production performance, feed intake, weaning estrus rate

摘要： Bus总线的哺乳母猪智能精准饲喂系统，可在现场方便进行猪只出入栏管理、猪只状态动态监测、异常情况实时报警功能。在云南省某规模化母猪场安装280台哺乳母猪智能饲喂器，与配置传统饲喂的生产线进行生产性能对比试验。试验结果表明，智能饲喂实现人机交互友好、触碰下料、智能湿拌、无接触操作和易检修的特点。智能饲喂较传统饲喂相比，可提高母猪平均日采食量0.673kg，日饲料浪费量减少0.345kg，智能饲喂和传统饲喂不同日龄的平均日采食量和日饲料浪费量存在极显著差异（P<0.01）；月产健仔数提高10.44%，窝均健仔数增加0.69头，21天断奶仔猪均重增加0.370kg；哺乳母猪背膘损失降低34.43%，7天断配率提高4%。对系统进行投资回报率分析，智能饲喂能有效减少饲料浪费，提高生产成绩，投资回报率高，可有效助力规模化猪场降本增效。该研究对母猪智能饲喂系统的开发和应用提供参考。

关键词: 哺乳母猪, 智能饲喂, 生产性能, 采食量, 断配率