枯草芽孢杆菌JA-14菌剂对肉鸡粪便中氨气释放量的影响

为了降低肉鸡粪便中氨气的释放量,净化鸡舍内环境,提高肉鸡的生产性能,向肉鸡基础日粮中添加枯草芽孢杆菌JA-14菌剂(基础日粮组为对照组),采用纳氏比色法测定肉鸡粪便中氨气的释放量,并测定粪便的蛋白酶活力、总氮和氨态氮含量、pH值及水分含量。结果显示,与对照组相比,添加JA-14菌剂组粪便中氨气释放量下降了24.88%,蛋白酶活力提高了23.25%,总氮和氨态氮含量分别下降了35.72%和63.80%,pH值和含水量分别下降了6.31%和25.66%。可见,枯草芽孢杆菌微生态制剂能够提高肉鸡肠道蛋白酶活力、减少氨气排放量。

Effects of Bacillus subtilis JA-14 Preparation on Ammonia Release from the Feces of Broilers

In order to reduce the realease of ammonia,purify the enviroment of henhouse,and improve the production performance of broilers,Bacillus subtilis JA-14 preparation was added into broiler diets.Fecal ammonia release rate was measured by Nessler's colorimetry.Protease activity,total nitrogen content and ammonia nitrogen content,pH value and moisture content of the feces were determined.The results showed that after addition of JA-14 agent,the fecal ammonia volatilization of test group was 24.88％ lower than the control group.The activity of protease was 23.25％ higher than the control group.Total nitrogen content,ammonia nitrogen content,pH value and water content decreased by 35.72％,63.80％,6.31％ and 25.66％,respectively.Preparation of bacillus can improve protease activity of broiler intestines and reduce ammonia emission.