酿酒酵母培养物对817肉仔鸡生长性能、养分表观利用率及肠道菌群的影响  

Effects of Saccharomyces cerevisiae Culture on Growth Performance,Apparent Availability of Nutrients and Intestinal Bacteria Flora of 817 Broiler Chickens

作　　者：丁小娟[1] 张晓图[1] 王世琼[1] 陈冠华[1] 李晓[1] 王逢久 梁振贤 王志祥[1] 

机构地区：[1]河南农业大学牧医工程学院,郑州450002 [2]河南邑鸿善成生物技术有限公司,武陟454950

出　　处：《动物营养学报》2017年第7期2391-2398,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

摘　　要：本试验旨在探讨酿酒酵母培养物(SC)对817肉仔鸡生长性能、养分表观利用率及肠道菌群的影响。试验选取1日龄体重相近的817肉仔鸡600只,随机分为5组,每组6个重复,每个重复20只。对照组饲喂基础饲粮,抗生素组在基础饲粮中添加20 mg/kg硫酸黏杆菌素+2.6 mg/kg黄霉素,试验Ⅰ、Ⅱ、Ⅲ组分别在基础饲粮中添加2 500、5 000、7 500 mg/kg SC,试验期为60 d。结果显示:1)1~21日龄,试验Ⅱ、Ⅲ组的平均日增重(ADG)、平均日采食量(ADFI)均显著高于对照组(P<0.05),与抗生素组无显著差异(P>0.05);在22~60日龄和1~60日龄2个阶段,试验Ⅱ组的ADG显著高于对照组(P<0.05),ADFI显著高于抗生素组(P<0.05);22~60日龄,3个试验组的料重比和死亡率较对照组差异均不显著(P>0.05),但在1~60日龄有下降趋势(0.05≤P<0.10)。2)试验Ⅱ、Ⅲ组较对照组显著提高了总磷的表观利用率(P<0.05);各组粗蛋白质、钙的表观利用率无显著差异(P>0.05)。3)与对照组相比,试验Ⅰ组盲肠中大肠杆菌的数量显著降低(P<0.05),与抗生素组无显著差异(P>0.05);试验Ⅱ组盲肠中乳酸菌数量和试验Ⅲ组空肠中双歧杆菌数量均显著高于对照组和抗生素组(P<0.05)。由此可见,饲粮中添加适宜水平的SC能增加817肉仔鸡ADFI和ADG,降低料重比,增强对饲粮中总磷的利用率,促进乳酸菌、双歧杆菌的增殖,抑制大肠杆菌的增殖;当SC添加水平为5 000 mg/kg时,对动物的促生长效果最佳,优于抗生素。This experiment was conducted to evaluate the effects of effects of Saccharomyces cerevisiae culture （SC） on growth performance, apparent availability of nutrients and intestinal bacteria of 817 broiler chickens. A total of 600 healthy one-day-old 817 brolier chickens with similar body weight were randomly divided into 5 groups with 6 replicates per group and 20 chicks per replicate. The chickens in control group were fed a basal diet, those in antibiotics group were fed the basal diet supplemented with 20 mg/kg sulfuric acid colistin and 2.6 mg/kg flavomycin, and those in trial groups Ⅰ, Ⅱ and Ⅲ were fed the basal diet supplemented with 2 500, 5 000 and 7 500 mg/kg SC, respectively. The experiment lasted for 60 days. The results showed as follows： 1） during 1 to 21 days of age, average daily gain （ADG） and average daily feed intake （ADFI） in trial groups Ⅱ and Ⅲ were significantly increased than those in control group （P〈0.05）, but no significant difference were observed when compared with antibiotics group （P〉0.05）; during 22 to 60 days of age and 1 to 60 days of age, ADG in trial group Ⅱ was significantly higher than that in control group （P〈0.05）, and ADFI was significantly higher than that in antibiotics group （P〈0.05）; compared with control group, feed to gain ratio and mortality in trial groups were not significantly changed （P〉0.05）, while downward trends were found during 1 to 60 days of age（0.05≤P〈0.10）. 2） Compared with control group, trial groups Ⅱ and Ⅲ significantly improved apparent availability of total phosphorus （P〈0.05）; no significant differences were found in apparent availability of crude protein and calcium among groups （P〉0.05）. 3） Compared with control group, trial group Ⅰ significantly decreased the number of E.coli in cecum （P〈0.05） and achieve the level of antibiotics group （P〉0.05）; compared with control group and antibiotics group, the number of Lactobacillus in cecum of trial group �

关 键 词：酿酒酵母培养物 生长性能 养分表观利用率 菌群 817肉仔鸡 

分 类 号：S816.7[农业科学—饲料科学]