关键词：
黄芪多糖;白术多糖;牛膝多糖;生长性能;肠道内环境
摘 要：
本试验旨在探讨断奶仔猪饲粮中单独或联合添加黄芪多糖、白术多糖和牛膝多糖对断奶仔猪生长性能及肠道内环境的影响。试验选取256头35日龄的杜×长×大三元杂交断奶仔猪,随机分为8个组,每组4个重复,每个重复8头猪。采用三因素两水平(2×2×2)试验设计,饲粮中黄芪多糖、白术多糖和牛膝多糖的添加水平设置为0和800 mg/kg,试验共进行28 d。结果表明:1)在断奶仔猪饲粮中单独或两两联合添加黄芪多糖、白术多糖和牛膝多糖有提高断奶仔猪平均日增重的趋势(P>0.05),3种多糖联合使用能显著提高断奶仔猪平均日增重(P<0.05),各组之间料重比无显著差异(P>0.05)。断奶仔猪饲粮中单独添加黄芪多糖、白术多糖和牛膝多糖均能显著降低断奶仔猪的腹泻率(P<0.05),多糖之间存在一定互作效应。2)与对照组相比,单独或联合添加多糖组断奶仔猪回肠、直肠内容物的p H无显著变化(P>0.05),盲肠和结肠内容物p H显著降低(P<0.05),3种多糖联合添加对盲肠内容物p H有互作效应(P<0.05)。3)与对照组相比,单独或联合添加多糖组断奶仔猪盲肠内容物总挥发性脂肪酸含量均显著上升(P<0.05),三者联合的效果显著优于单独添加(P<0.05)。4)在断奶仔猪饲粮中单独或联合添加植物多糖均能显著提高肠道内乳酸菌和双歧杆菌的数量(P<0.05),多糖两两组合组与单一添加组相比肠道内乳酸菌和双歧杆菌的数量有增加趋势,但差异不显著(P>0.05),单独或联合添加多糖能显著降低肠道中大肠杆菌的数量(P<0.05)。由此可见,饲粮添加黄芪多糖、白术多糖和牛膝多糖可改善其肠道内环境,降低仔猪腹泻,从而改善断奶仔猪的生长性能,且以三者联合添加效果最佳。
译 名：
Effects of Botanical Polysaccharide on Growth Performance and Intestinal Environment of Weaned Piglets
作 者：
XIE Hongbing;ZOU Yun;LIU Lili;YANG Yongsheng;HE Jianhua;College of Animal Science and Technology,Hunan Agricultural University;
单 位：
XIE Hongbing%ZOU Yun%LIU Lili%YANG Yongsheng%HE Jianhua%College of Animal Science and Technology,Hunan Agricultural University
关键词：
Astragalus polysaccharides;;Atractylodes macrocephalaon polysaccharide;;Achyranthes bidentata polysaccharides;;growth performance;;intestinal environment
摘 要：
This experiment was conducted to investigate the effects of Astragalus polysaccharides( APS),Atractylodes macrocephala polysaccharides( AMP) and Achyranthes bidentata polysaccharides( ABP) on growth performance and intestinal environment of weaned piglets. A total of two hundred and fifty-six 35-day-old Duroc ×Landrace×Yorkshire crossbred piglets were randomly divided into 8 groups and each group had 4 replicates with 8 piglets per replicate. A 2 × 2 × 2 factorial trial with three factors of two levels each was conducted and the amount of APS,AMP and ABP were added at dosage of 0 and 800 mg/kg for 28 days. The results showed as follows: 1)adding alone or combined with any two of APS,AMP and ABP tended to increase the average daily gain of weaned piglets( P> 0.05),and the combination of three kinds of polysaccharides could significantly improve the average daily gain of weaned piglets( P< 0.05). There were no significant differences in the ratio of feed to gain among all groups( P> 0.05). The polysaccharide supplementation could significantly reduce the diarrhea rate of weaned piglets( P< 0.05),importantly there was a certain interaction effect between polysaccharides. 2) Compared with the control group,the p H in ileum and rectum contents of weaned piglets fed diets supplemented with alone or combined with any two of polysaccharide had no significant change( P> 0.05),but the p H in cecal and colon contents was significantly decreased( P< 0.05),and it was worth mentioning that the combination of three polysaccharides had an interaction effect on the p H of cecal content( P < 0.05). 3) Compared with the control group,the contents of total volatile fatty acids in the caecum contents of weaned piglets in alone or combined with polysaccharide groups were significantly increased( P< 0.05),and the combination effect of the three polysaccharides was significantly higher than that of the single polysaccharide( P< 0.05). 4) Adding alone or combined with APS,AMP and ABP significantly increased the numbers of intestinal Lactobacillus and Bifidobacterium of weaned piglets( P < 0. 05). At the same time,although groups adding two kinds of polysaccharides had an increasing trend to the numbers of intestinal Lactobacillus and Bifidobacterium compared with groups adding with one kind of polysaccharides,the difference was not significant( P> 0.05). The number of Escherichia coli in intestinal tract of groups adding with one kind and two kinds as well as three kinds of polysaccharides was significantly decreased( P<0.05). It is concluded that the addition of APS,AMP and ABP in the diet can improve intestinal environment,decrease the diarrhea rate and thus improving the growth performance of weaned piglets,and the combination effect of three polysaccharides is the best.
