Abstract: To explore the effects of complex plant polysaccharides（Astragalus polysaccharide，Lycium barbarum ploysaccharide，Seaweed ploysaccharide）on the performance of sows and piglets，56 sows in late pregnancy of 2—3 parities were randomly divided into control group（basal diet）and three test groups（basal diet+0.05%，0.15%，0.25% complex plant polysaccharides）.The test period was from 7 days before farrowing to 21 days after farrowing. The results showed that in the recovery of sow body condition，compared with the control group，backfat thickness at weaning of test groups 2 and 3 increased significantly by 7.48% and 8.09%，respectively，while there was no significant difference between the test group 1 and the control group.The backfat thickness loss was significantly reduced by 25.18%，51.08%，and 48.92%，respectively.Among them，the reduction of the test groups 2 and 3 were significantly greater than that of the test group 1.The estrus rate within 7 d post‑weaning was significantly increased by 20.15%，35.07% and 37.08%，respectively.Among them，the increasing extent of the test groups 2 and 3 was signifianty greater than that of the test group 1.In terms of sow farrowing performance，compared with the control group，the number born alive in the test groups 1，2 and 3 increased significantly by 9.57%，14.41% and 11.70%，respectively；the number of healthy piglets was increased by 12.62%，16.41% and 14.46%，respectively，but there was no significant difference between the test group 1 and the control group.The newborn litter weight of piglets increased significantly by 10.50%，13.74% and 8.52%，respectively.The number of weak piglets was significantly reduced by 24.53%，27.36% and 23.58%，respectively. The number of stillbirths was significantly reduced by 16.20%，46.48% and 42.96%，respectively. In terms of serum immune performance of sows，compared with the control group，the IgA content in the test groups 1，2 and 3 increased significantly by 21.59%，19.32% and 18.18%，respectively；the IgM content of group 2 and group 3 was significantly increased by 21.10% and 23.85%，respectively，while the difference of group 1 was not significant.TNF‑α levels were significantly reduced by 14.96%，19.44%，and 18.07%，respectively.The content of IL‑2 increased significantly by 42.43%，45.91% and 48.68%，respectively.The content of IL‑4 was significantly increased by 13.07%，14.86% and 14.08%，respectively.The content of IL‑6 was significantly decreased by 18.52%，16.13% and 12.82%，respectively.In terms of growth performance of piglets，compared with the control group，the average birth weight of weaned piglets in the test groups 1，2 and 3 increased by 17.23%，19.43% and 19.59%，respectively.The weaning litter weight of piglets was significantly increased by 29. 99%，38. 68% and 34.29%，respectively，and the weaning litter weight of group 2 and group 3 was significantly higher than that of group 1.The average daily gain increased significantly by 20.97%，23.18% and 24.06%，respectively.The diarrhea rate was significantly reduced by 19.26%，26.91% and 28.89%，respectively，and the diarrhea rate of the test groups 2 and 3 was significantly lower than that of the test group 1.In summary，adding 0.05%，0.15%，0.25% complex plant polysaccharides to the sow diet can significantly improve the reproductive performance，immune function of sows and growth performance of piglets，and the improvement effect of 0.15% and 0.25% concentration groups is significantly better than that of low concentration group.

Key words: Sow, Complex plant polysaccharide, Body condition recovery, Farrowing performance, Immune performance, Piglet growth performance

摘要： 为探究复合植物多糖（黄芪多糖、枸杞多糖、海藻多糖）对母猪及仔猪性能的影响，将56头2~3胎次妊娠后期母猪随机分为对照组（基础饲粮）和3个试验组（基础饲粮+0.05%、0.15%、0.25%复合植物多糖），试验期为产前7 d至产后21 d。结果表明，在母猪体况恢复情况方面，与对照组相比，试验2、3组断奶背膘厚度分别显著增加7.48%、8.09%，而试验1组与对照组无显著差异；背膘厚度损失分别显著降低25.18%、51.08%、48.92%，其中，试验2、3组的降低幅度显著大于试验1组；断奶后7 d内发情率分别显著提高20.15%、35.07%、37.08%，其中，试验2、3组的增加幅度显著大于试验1组。在母猪产仔性能方面，与对照组相比，试验1、2、3 组产活仔数分别显著增加9.57%、14.41%、11.70%；产健仔数分别增加12.62%、16.41%、14.46%，但试验1 组差异不显著；仔猪初生窝质量分别显著增加10.50%、13.74%、8.52%；产弱仔数分别显著降低24.53%、27.36%、23.58%；死胎数分别显著降低16.20%、46.48%、42.96%。在母猪血清免疫性能方面，与对照组相比，试验1、2、3组中IgA含量分别显著增加21.59%、19.32%、18.18%；试验2、3组IgM含量分别显著增加21.10%、23.85%，而试验1组差异不显著；TNF-α含量分别显著降低14.96%、19.44%、18.07%；IL-2含量分别显著增加42.43%、45.91%、48.68%；IL-4含量分别显著增加13.07%、14.86%、14.08%；IL-6含量分别显著降低18.52%、16.13%、12.82%。在仔猪生长性能方面，与对照组相比，试验1、2、3组仔猪断奶平均体质量分别显著增加17.23%、19.43%、19.59%；仔猪断奶窝质量分别显著增加29.99%、38.68%、34.29%，且试验2、3组的断奶窝质量显著高于试验1组；平均日增质量分别显著增加20.97%、23.18%、24.06%；腹泻率分别显著降低19.26%、26.91%、28.89%，且试验2、3组的腹泻率显著低于试验1组。综上，在母猪饲粮中添加0.05%、0.15%、0.25%复合植物多糖能显著改善母猪繁殖性能、免疫机能及仔猪生长性能，且0.15%和0.25%质量分数组的提升效果显著优于低质量分数组。

关键词: 母猪, 复合植物多糖, 体况恢复, 产仔性能, 免疫性能, 仔猪生长性能