复合植物多糖对兔生长性能、消化代谢及免疫机能的影响

为分析复合植物多糖对兔生长性能、消化代谢及免疫机能的影响,试验选择日龄、体重相近的新西兰仔兔100只随机分成4个组,每组25个重复,每个重复1只,1组饲喂基础日粮为空白对照组,试验2、3、4组在基础日粮中分别添加1.0%、1.5%、2.0%的复合植物多糖,试验期为30 d。结果显示:(1)试验3、4组的平均日增重较1组相比分别提高33.3%、27.7%(P<0.05),料重比较1组相比分别降低14.4%、10.6%(P<0.05),试验2、3、4组平均采食量均高于1组(P>0.05);(2)试验3、4组干物质、粗蛋白质、粗纤维的养分表观消化率较1组比分别提高6.2%、8.0%、24.6%、4.4%、8.1%、24.6%(P<0.05);试验2、3、4组的总能及钙、磷的养分表观消化率均高于1组(P>0.05);(3)试验3、4组血清中的Ig G、IgA、IL-2含量较1组比分别提高10.3%、10.9%、24.1%、9.6%、9.3%、27.5%(P<0.05),试验2、3、4组血清中的IgM、IL-6含量均高于1组(P>0.05)。结论表明,1.5%的复合植物多糖添加可以提高兔的生长性能、消化代谢及免疫机能。

Effects of compound plant polysaccharides on growth performance,digestive metabolism and immune function of rabbits

In order to analyze the effects of compound plant polysaccharides on growth performance,digestion and metabolism,and immune function of rabbits,100 New Zealand rabbits of similar age and weight were randomly divided into 4 groups,25 replicates in each group,1 in each replicate.Group 1 was fed with basic diet as blank control group,and groups 2,3 and 4 were added to basic diet respectively 1%,1.5%,2%compound plant polysaccharides.The experiment period was 30 days.The results showed that:(1)The average daily gain of groups 3 and 4 was 33.3%,27.7%higher than that of group 1(P<0.05),the ratio of feed to gain was 14.4%,10.6%lower than that of group 1(P<0.05).The average food intake of groups 2,3 and 4 was higher than that of group 1(P>0.05).(2)The apparent digestibility of dry matter,crude protein and crude fiber in groups 3 and 4 were 6.2%,8.0%,24.6%,4.4%,8.1%,24.6%higher than that in group 1(P<0.05).The total energy and apparent digestibility of calcium and phosphorus in groups 2,3 and 4 were higher than those in group 1(P>0.05).(3)The content of IgG,IgA,IL-2 in the serum of test groups 3 and 4 were 10.3%,10.9%,24.1%,9.6%,9.3%,27.5%higher than that of group 1(P<0.05).The levels of IgM and IL-6 in the serum of groups 2,3 and 4 were higher than that of group 1(P>0.05).In conclusion:1.5%compund plant polysaccharide could improve the growth performance,digestive metabolism and immune function of rabbits.