本文旨在研究饲粮粗纤维水平对妊娠母猪粪便指标、血清激素和生化指标的影响。选取已配种的大约克夏经产母猪30头作为试验动物，根据配种时间、胎次等基本相近原则
，将母猪分为对照组、处理1和处理2（妊娠前期饲粮粗纤维水平分别为4.14%、5.27%和6.06%，妊娠后期饲粮粗纤维水平分别为2.62%、3.45%和5.22%），试验期平均为114 d。结果显示，1)妊娠前期处理1、处理2中母猪粪便的水分含量显著低于对照组（P＜0.05或P＜0.01），与对照组相比，处理2母猪妊娠前期和后期粪便的pH和乳酸杆菌数量显著升高（P＜0.05或P＜0.01），大肠杆菌数量显著降低（P＜0.05）；2）妊娠前期处理1有机物、酸性洗涤纤维、中性洗涤纤维消化率显著高于其他2组（P＜0.05或P＜0.01）；3）对照组血清甘油三酯含量和胆固醇含量显著高于处理2（P＜0.01或P＜0.05），妊娠后期对照组血清总胆固醇含量显著高于其他2组（P＜0.01或P＜0.05）；4）妊娠后期对照组血清总抗氧化能力、过氧化氢酶活性和泌乳素水平显著高于处理2（P＜0.05或P＜0.01）。结果表明，提高妊娠母猪饲粮粗纤维水平不能提高粪便水分含量和降低粪便pH，但可改善粪便菌群组成，降低血清甘油三酯和总胆固醇含量，对改善抗氧化能力和提高泌乳素水平没有帮助。

This experiment was conducted to study the effects of dietary fiber levels on fecal indices and serum hormones and other biochemical indices of gestating sows. Thirty Yorkshire multi-parity sows, with similar parity and breeding time, were randomly divided into control group, treatment 1 and treatment 2 (the dietary fiber levels in early gestation were 4.14%, 5.27% and 6.06%, respectively, and 2.62%, 3.45% and 5.22% in late gestation, respectively). The experiment lasted for 114 days. The results showed that: 1) fecal moisture content in treatment 1 and treatment 2 was significantly higher than that in the control group in early gestation (P＜0.05 or P＜0.01), compared with control group, fecal pH and quantity of lactobacillus in treatment 2 were increased in early and late gestation （P＜0.05 or P＜0.01）, but quantity of Escherichia coli was decreased （P＜0.05）; 2) the digestibility of organic matter, NDF and ADF were increased in treatment 1 compared with the control group and treatment 2 in early gestation (P＜0.05 or P＜0.01); 3) serum triglyceride and total cholesterol in the control group were significantly higher than those in treatment 2 in early gestation (P＜0.05 or P＜0.01), and serum total cholesterol in the control group were significantly higher than that in the other groups in late gestation （P＜0.05 or P＜0.01）; 4) serum anti-oxidation capacity, activity of catalase and prolactin levels in the control group were significantly higher than those in treatment 2 （P＜0.05 or P＜0.01）. The results indicate that high dietary fiber levels don’t have active effects on improving fecal moisture content or decreasing fecal pH and don’t have active effects on improving anti-oxidation and prolactin levels, but have active effects on improving fecal bacterial composition, and decreasing serum triglyceride and total cholesterol. ［Chinese Journal of Animal Nutrition, 2010，22（6）:1529-1535］