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China Swine Industry ›› 2026, Vol. 21 ›› Issue (4): 26-36.doi: 10.16174/j.issn.1673-4645.2026.04.005

• Special Report • Previous Articles     Next Articles

Effects of intelligent precision feeding system on the reproductive performance of sows in multi-story pig farms

GAN Yuening1,2, LIU Hui2, JIANG Haihua2, LIU Chenghan2, WU Ruiting2, WANG Lingli2, Zhong Ruqing3, WANG Yan4, ZHAO Yunxiang1,2*, LIU Xiangdong2,5*   

  1. 1Guangxi University, Nanning 530000, China; 

    2Guangxi Yangxiang Group Co., Ltd., Guigang 537100, China; 

    3Institute of Animal Sciences of CAAS, Beijing 100193, China; 

    4South China Agricultural University, Guangzhou 510642, China; 

    5Huazhong Agricultural University, Wuhan 430070, China

  • Online:2026-08-25 Published:2026-08-25

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Abstract: Multi-story pig farms have developed rapidly in the Chinese swine industry. Conventional extensive equipment and production modes can hardly meet the high-output requirements of high-investment building-style pig production. The feeding system, which is closely linked to individual animals, plays a vital role in feed intake and reproductive performance of sows. This study compared differences in feed intake and reproductive performance of sows after replacing manual quantitative-cup feeders (MF) with precision feeding system (PF) which was based on Artificial Intelligence of Things in a multi-story sow farm. The trial was conducted on a large-scale multi-story building pig farm, with 10 530 healthy 4th to 5th parity Large White ×Landrace cross-bred sows. A before-and-after self-control experimental design was adopted to evaluate the feeding accuracy of the two feeding systems, and to compare indicators including sow backfat thickness, feed intake and reproductive performance during the two-year periods before and after full replacement of feeders on the farm. The results showed that: 1) the feeding accuracy ranged from 0.57% to 3.33% for PF and from 3.11% to 25.33% for MF; 2) PF yielded significantly better outcomes (P ＜0.05) than MF in terms of backfat compliance rate at day 108 of gestation, improvement rate of backfat thickness from weaning to day 108 of gestation, improvement rate of backfat thickness from day 30 to day 108 of gestation, total born, born alive, corrected 28-day weaning weight of piglets, average daily gain of nursing piglets, sow backfat compliance rate at weaning, oestrus-mating rate within 7-days post-weaning, subsequent weaning-to-service interval, and subsequent conception rate. Equipping multi-story pig farms with high-precision feeding systems based on Artificial Intelligence of Things contributes to improved reproductive and production performance of sows, and provides technical support for efficient production in multi-story pig farm.

Key words: multi-story pig farm, precision feeding, sow, feed intake, backfat thickness, reproductive performance

CLC Number: 

  • S828
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