饲粮添加发酵油菜籽对兔消化道微生物群和免疫状态的影响

Effects of Dietary Supplemented with Fermented Rapeseed on Digestive Tract Microflora and Immune Status of Rabbits

为确定在饲料中使用不同添加量的发酵油菜籽对兔子免疫状态和消化道不同部分微生物群的影响。选取健康且体重相近的40只35日龄仔兔,随机分为4组,每组有10只,雌雄各半,2只/笼,每组内有5次重复。4组分别为A组(对照组)、B组(添加4%发酵油菜籽)、C组(添加8%发酵油菜籽)、D组(添加12%发酵油菜籽)。结果表明:A组和B组中温好氧菌数量在空肠中差异显著(P<0.05);A组和D组空肠中的大肠埃希菌数量差异显著(P<0.05),A组和B、C、D组结肠中大肠埃希菌数量差异显著(P<0.05);A组血清中的IgG含量显著高于C、D组(P<0.05)。说明发酵油菜籽饲料通过提供生物活性物质,有助于增强免疫系统发育并帮助预防肠道微生物紊乱。

To determine the effects of different levels of fermented rapeseed feed on the immune status of rabbits and the microbial populations in different sections of the digestive tract.Forty healthy and similarly weighted 35-day-old weaned rabbits were selected and randomly assigned to four groups,with 10 rabbits per group(5 females and 5 males).Animals were housed in pairs,with five replicates per group.The four groups were labeled as A(con-trol group),B(4%fermented rapeseed supplementation),C(8%fermented rapeseed supplementation),and D(12%fermented rapeseed supplementation).Results indicated significant differences(P<0.05)in the quantity of mesophilic aerobic bacteria in the jejunum between groups A and B.Significant differences(P<0.05)were ob-served in the quantity of Escherichia coli in the jejunum between groups A and D,as well as in the colon between groups A and B,C,and D.Moreover,the serum IgG content in group A was significantly higher than that in groups C and D(P<0.05).In conclusion,fermented rapeseed feed,by providing bioactive substances,enhances the de-velopment of the immune system and helps prevent disruptions in intestinal microbial balance in rabbits.