复合微生态制剂对蛋鸡产蛋性能、蛋品质、血清生化指标和肠道形态的影响

试验在基础饲粮中添加由丁酸梭菌和屎肠球菌组成的复合微生态制剂,研究其对产蛋高峰期蛋鸡的产蛋性能、蛋品质、血清生化指标、肠道形态的影响.选取产蛋率和体重接近的40周龄健康的海兰褐蛋鸡400只,随机分成4组,每组5个重复,每个重复20只鸡.对照组蛋鸡饲喂基础饲粮,抗生素组在基础饲粮中添加200 g/t金霉素,试验1组、2组...

Effect of compound probiotics on laying performance,egg quality,serum parameters and intestinal morphology of laying hens

The study was conducted to investigate the effect of compound probiotics, composed of Clostridium butyricum and Enterococcus faecium on laying performance, egg quality, serum biochemical index and intestinal morphology of laying hens during peak laying period. A total of 400 healthy 40-week-old Hy-line brown layers with similar egg production rate and body weight were randomly divided into four groups, with five replicates in each group and 20 chickens in each replicate. The control group was fed with a basal diet, the antibiotic group was supplemented with200 g/t chlortetracycline in basal diet, group 1 and group 2 hens were fed with 50 g/t and 100 g/t of compound microorganism preparation in the basal diet, respectively. The experimental period was 42 d. The results showed that compared with the control group, the addition of compound microorganism preparation significantly increased the laying rate(P<0.05), reduced the ratio of feed to egg and broken egg rate significantly(P<0.05). Compared with control group,adding 100 g/t probiotics to the diet significantly increased the specific gravity, Huff units, fat content and crude protein content of egg yolk(P<0.05), and reduced the yolk moisture significantly(P<0.05). Compared with the control group,adding 100 g/t probiotics to diet increased the serum total protein and globulin content of laying hens significantly(P<0.05), and reduced the serum uric acid content significantly(P<0.05). Compared with control group, the addition of compound microorganism preparation significantly increased the villus height and villus height/crypt depth in jejunum,ileum and cecum of laying hens(P<0.05). The experiment indicates that dietary compound microorganism preparation composed of Clostridium butyricum and Enterococcus faecium can significantly improve laying performance, egg quality and improve serum biochemical indicators and intestinal villi structure.