【作者】 张仁义； 黄小红； 陈家祥； 黄灿丽； 王长康；

【Author】 Zhang Renyi~①,Huang Xiaohong Chen Jiaxiang Huang Canli Wang Changkang~②(Animal Science college of FAFU fuzhou 350002)

【机构】 福建农林大学动物科学学院；

【摘要】 为研究地衣芽孢杆菌对肉鸡十二指肠蛋白酶活性及粪便中常规成分的影响,选用180只1日龄肉鸡,随机分为3组,每组设4个重复,每个重复15只。第Ⅰ组为空白对照组,饲喂基础日粮;试验第Ⅱ组添加50mg/kg水平的地衣芽孢杆菌制剂于基础日粮中。第Ⅲ组为抗生素对照组,在基础日粮中添加30mg/kg的杆菌肽锌和6mg/kg的硫酸抗敌素。试验结果表明:对于十二指肠肠壁蛋白酶活性影响,第Ⅱ组和第Ⅰ组比较,第Ⅱ组能显著地提高十二指肠肠壁蛋白酶活性(P<0.05),高出了13.05%;对于十二指肠内容物蛋白酶活性影响,第Ⅱ组和第Ⅰ、Ⅲ组比较,第Ⅱ组能极显著地提高十二指肠内容物蛋白酶活性(P<0.01),分别高出了22.86%、18.57%。按常规方法测定排出的粪便中总氮量,含水量、粗灰分。结果表明:添加50mg/kg地衣芽孢杆菌的试验Ⅱ组肉鸡粪便中总氮量降低11.5%,粗灰分降低了4.43%,含水量较降低了5.98%,差异显著(P<0.05),与抗生素组相比,粪便排出量降低了13.63%,差异显著(P<0.05)。结论:添加地衣芽孢杆菌可促进肉鸡对饲料的消化、吸收,减少粪便排出量,提高氮存留量,提高饲料转化率。其适宜添加量为50mg/kg。更多还原

【Abstract】 In order to studied the effects of Bacillus licheniformis on duodenum protease activities and the routine ingredient in manure in Meat chickens.A total of 180 one-day Meat chickens were divided into three groups.Each group was set four repetitions.15 Meat chickens per repetitions. The control group was fed to the basic diet.The treatment group was fed to the basic diet supplemented with 50mg/kg of Bacillus licheniformis.The antibiotics group was fed to the basic diet supplemented with 30mg/ kg zinc bacitracin and 6mg/kg Colistin sulfate.The results indicated that Bacillus licheniformis significantly increased duodenum protease activities,it was higher than both the control groups. Acoording to the usual way we can determine nitrogen content,water content and thick ashes in fowl manure.The results showed:Adding Broilers Total content of nitrogen in the fowl manure reduce 11.5 percents,thick ashes reduce 4.43 percents,water content reduce 5.98 percents,significant difference(P<0.05),contrasting to antibiotics group,manure throughput content reduce 13.63 percents,significant difference(P<0.05). Conclusion:adding Bacillus licheniformis could improve duodenum protease activities in meat chickens, and it is contribute to digest and absorb feed,reduce manure throughput content,improve nitrogen persistence content and feeds true nutritive value.Its fit adding content is 50mg/kg更多还原