硫化钠对绵羊瘤胃微生物的影响  

EFFECT OF Na_2S ON RUMEN MICROBES IN SHEEP

作　　者：郑拉弟[1] 侯先志[1] 刘玉承[1] 王贞贞[1] 

机构地区：[1]内蒙古农业大学动物科学与医学学院,呼和浩特010018

出　　处：《内蒙古农业大学学报（自然科学版）》2006年第4期50-53,共4页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：内蒙古科技厅科技攻关项目(20020607)资助

摘　　要：本试验旨在研究硫化钠对瘤胃微生物生长情况的影响。试验采用装有永久性瘤胃瘘管的内蒙古半细毛羊羯羊4只,以玉米秸杆加精料为基础日粮(精粗比为2:8),研究日粮干物质中的不同硫含量分别为0.12%(对照组)、0.18%(水平1组)、0.25%(水平2组)、0.30%(水平3组)时,对瘤胃微生物的影响。结果表明,在低硫日粮的条件下,添加硫化钠能促进瘤胃微生物的生长。瘤胃原虫的数量在水平1组时达到最大(9.11×105/m l),显著高于对照组(p<0.05);而瘤胃细菌和真菌的总数在水平2组达到最大,分别为14.61×108/m l、11.23×103/m l,显著高于其它几组(p<0.01)。Four Inner Mongolia local sheep with a permanent rumen cannula were used to investigate the effect of Na2 S on rumen microbial populations. Sulfur supplementation levels in ration（ DM basic） were 0.12% （control） ,0.18% （ treatment Ⅰ ）, 0.25% （ treatment Ⅱ ）, 0.32% （ treatment Ⅲ ） respectively, The basic diets were composed of corn straw（ 80% ） and concentrate （20%）. The resuits indicated that in the condition of low sulfur dose improved growth of rumen microbes. The number of rumen protozoa was highest in treatment Ⅰ （9.11 × 10^5/ml）, and it was significantly higher than control group（p 〈0.05）. The populations of rumen bacteria and fungi in treatment Ⅱ were significantly higher than other groups（p 〈0.01 ）, which were 14.61 × 10^8/ml and 11. 23 × 10^3/ml respectively.

关 键 词：Na2S·9H2O 纤毛虫 真菌 细菌 

分 类 号：S826.4[农业科学—畜牧学]