摘要： 取1日龄AA肉鸡240只,随机分成4组,分别饲喂添加含0.0%菊糖(对照组)、0.3%菊糖、0.1%枯草芽孢杆菌0、.3%菊糖+0.1%枯草芽孢杆菌的玉米-豆粕型日粮42 d。垫料平养,自由采食和饮水。于21,42日龄平板菌落计数法测定肉鸡盲肠菌群数量和纳氏试剂法测定排泄物氨气。结果表明:21日龄时,菊糖和枯草芽孢杆菌可降低大肠杆菌和沙门氏菌的数量,以菊糖+枯草芽孢杆菌组影响更为显著,但对总需氧菌和乳酸杆菌数量差异不显著;42日龄时,菊糖和枯草芽孢杆菌对大肠杆菌和沙门氏菌数量降低的作用更加明显,对总需氧菌影响仍然不大,但可增加乳酸杆菌数量,从而调节肉鸡肠道微生态环境;菊糖和枯草芽孢杆菌能有效减少肉鸡排泄物氨气散发量,以菊糖+枯草芽孢杆菌组作用更为显著,有利于改善肉鸡鸡舍环境。

关键词: 菊糖, 枯草芽孢杆菌, 肠道菌群数量, 氨气

Abstract: Two hundred and forty 1-d-old Arbor Acres broiler chicks were randomly divided into four groups each including 60 broilers. The four groups were respectively fed with adding 0.0% inulin, 0.3% inulin, 0.1% bacillus and 0.3% inulin + 0.1% bacillus in broiler diets. On 21 and 42 day, the number of cecal bacteria was detection by Counting bacteria method and ammonia of broiler??s fecal excreted was measured by Nessler??s reagent method. The resultsshowed that on 21 day, the addit ion of inulin and bacillus to broiler diets decreased the number of E. coli and Salmonella, especialy in the adding 0.3% inulin + 0.1% bacillus group, but there was no significant variat ion in the amounts of aerobic and Lactobacillus; On 42 day, the action of making the number of E. coli and Salmonella decreased was moresignificant than 21 day, though the quantity of aerobic didn??t vary, the amount of Lactobacillus was increased, whicould make microflora system better. Furthermore the adding of inulin and bacillus to broiler diets could reduce dissem-ination of ammonia in excretion of broilers, especialy in the adding 0.3% inulin + 0.1% bacillus group, which wasbenefit for improving hen house environment.

Key words: Dahlin, Bacillus subtilis , Intestinal flora quant ity, Ammonia

中图分类号: 

• S858.31