甘露寡糖对肉鹑肠长度及肠道菌群的影响

选取240只1日龄肉鹑随机分成4组,每组设4个重复,每个重复15只肉鹑。其中第1组为对照组,饲喂基础日粮,第2~4组为试验组,在基础日粮中分别添加0.5%、1.0%2、.0%的甘露寡糖(MOS)。进行为期50日龄的饲养,分别于35日龄和50日龄采样。试验结果表明,1.0%和2.0%MOS可显著增加35日龄肉鹑小肠长度和十二指肠长度(P<0.05)。1.0%和2.0%MOS组35日龄肉鹑空肠长度和回肠长度显著长于对照组和0.5%MOS组(P<0.05)。各处理组35 d肉鹑空回比均高于对照组,但未达到统计学差异水平(P>0.05)。日粮中添加MOS对50日龄肉鹑肠长度的影响无明显规律,各处理组之间无显著差异(P>0.05)。日粮添加0.5%、1.0%2、.0%MOS可显著降低35日龄和50日龄肉鹑回肠内大肠杆菌的数量(P<0.05),随着日粮MOS添加量的增加,回肠内大肠杆菌数量逐渐下降,且1.0%和2.0%MOS添加组回肠内大肠杆菌数量显著低于0.5%MOS添加组(P<0.05)。日粮添加0.5%、1.0%、2.0%MOS可显著提高35日龄和50日龄肉鹑回肠内乳酸杆菌的数量(P<0.05),随着日粮MOS添加量的增加,回肠内乳酸杆菌数量逐渐升高,且2.0%MOS添加组35日龄肉鹑回肠内乳酸杆菌数量显著高于0.5%MOS添加组(P<0.05)。

Effect of mannan-oligosaccharides on intestinal length and ileum flora in quail

Two hundred and forty newly hatched 1 day-old quails were randomly divided into 4 groups,each group with four replications,and each replication contained 15 quails.The first group was used as control and fed with basal diet.The rest of the groups were experimental groups,0.5%,1.0%,2.0% of mannan oligosaccharides(MOS)were added to groups 2,3 and 4 respectively for 50 days.Results indicated that addition of 1.0% and 2.0%MOS into the control diet significantly increased small intestinal length and duodenum len...