低聚木糖对断奶仔猪生产性能·腹泻率·抗氧化性能的影响

目的]研究不同剂量的低聚木糖对断奶仔猪生长性能、腹泻率以及血清和肝脏抗氧化性能的影响。方法]选用72头35日龄、初重(10.14±0.15)kg的杜长大三元杂交仔猪分成4组各组日粮分别为基础日粮(对照组)、基础日粮+100 mg/kg低聚木糖(试验Ⅰ组)、200 mg/kg(试验Ⅱ组)和400 mg/kg(试验Ⅲ组),研究不同剂量低聚木糖对断奶仔猪生长性能、腹泻率以及血清和肝脏抗氧化性能的影响。结果]与对照组相比,日粮中添加200和400 mg/kg低聚木糖能显著降低断奶仔猪的料重比(P0.05)。添加低聚木糖能够显著降低仔猪的腹泻率(P0.05)。添加低聚木糖还能够显著提高仔猪血清总抗氧化能力(T-AOC)、肝脏中超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活力(P0.05),显著降低血清和肝脏中丙二醛(MDA)含量(P0.05),以200 mg/kg低聚木糖的效果最佳。结论]该研究可为低木糖在畜禽生产中的应用提供试验依据。

Effects of Xylo-oligosaccharides on Growth Performance,Diarrhea Rate and Antioxidant Indexes of Weaned Piglets

Objective] The aim was to investigate the effect of different doses of xylo-oligosaccharides (XOS) on growth performance, diar-rhea rate and sermun and liver antioxidant indexes of weaned piglets. Method] A total of 72 crossbred piglets ( Duroc ×Landrace ×Big white) weaned at 35 days with initial body weight of (10.14 ±0.15) kg were assigned into 4 groups.Piglets were fed the basal diet(control group), the basal diet plus 100 mg/kg XOS(Experiment I), 200 mg/kg XOS(Experiment Ⅱ) and 400 mg/kg XOS (Experiment Ⅲ), re-spectively.Effects of different doses of XOS on growth performance, diarrhea rate and sermun and liver antioxidant indexes of weaned piglets were studied. Result] The results showed that fed diets supplemented with 200 and 400 mg/kg XOS decreased significantly feed to gain ratio (P<0.05) as compared with the control.Diarrhea rates were lower(P<0.05) in supplementation of XOS than control group in weaned pig-lets.The diets supplemented with XOS enhanced markedly the serum T-AOC, liver SOD and CAT activity(P<0.05), decreased MDA con-tents(P<0.05)of serum and liver, and the best dose supplemented with XOS was 200 mg/kg in diet.Conclusion]The study can provide ba-sis for application of XOS in livestock and poultry production.