共被期刊论文引用了3次
您的检索式：您选中1篇文献正在查看引证文献汇总
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Isolation and identification of sinapine-degrading bacteria from the intestinal tract of laying hens显示文摘This study was aimed to isolate sinapine-degrading bacteria from the intestinal tract of laying hens and to identify the predominant bacteria. Thirty-week old healthy laying hens were killed, and the chyme in the digestive tract was inoculated into modified Czapek medium containing sinapin and cultivated at 37 ℃for 10 days. The optical density(OD) values of the bacterial solutions at different cultivating times were detected by a spectrophotometric method. The predominant strains were identified by 16 S rRNA gene analysis. We extracted the extracellular products of the predominant strains to determine the total protein using the Coomassie brilliant blue method, and to determine the activities of some extracellular enzymes using the agar plate diffusion method. Nine strains were isolated from the lower intestinal tract of laying hens. Among the 9 strains, 5 were from the ileum, 2 were from the ceca and 2 were from the jejunum. We could not isolate any strains from the upper intestinal tract, such as the stomach and duodenum. Eight of those 9 isolated strains were gram negative and one was gram positive. Strains YD-1 and YD-2 were better than other strains in their abilities to degrade sinapine. Strains YD-1 and YD-2 were identified as Escherichia coli and Klebsiella spp., respectively, by the 16 S rRNA sequence analysis.The total protein level of the extracellular products was 1.213 g/L for YD-1 and 1.990 g/L for YD-2. Both extracellular products of YD-1 and YD-2 had the activities of protease, amylase and urease. This study confirmed that the primary site of sinapine degradation is in the lower intestinal tract of laying hens. The sinapine-degrading strains are mainly gram negative. Strains YD-1 and YD-2 are predominant in degrading sinapine and they belong to E. coli and Klebsiella spp., respectively. Both extracellular products of YD-1 and YD-2 contain protease, amylase and urease. Strain YD-2 is better than strain YD-1 in its ability to degrade sinapine. | Dan Yu Xiaoli Huang Chengyi Zou Bin Li Jing Duan Qin Yin | 2016 | Animal Nutrition2016，，1： | 5 |
| 2 | 芥子碱降解菌1对昆明小白鼠LD50的研究显示文摘为了确定腹腔注射芥子碱降解菌1(sinapine-degrading bacteria 1,SDB1)对昆明小白鼠的安全性,试验分别采用革兰氏染色镜检法、活菌计数法、临床诊断、病理剖检和寇氏法对SDB1的特征、原菌液浓度、致病性以及SDB1对昆明小白鼠的半数致死量(LD_(50))进行了研究。结果表明:SDB1为中等大小、两端钝圆、散在或成对的革兰阴性杆菌。原菌液浓度为2.28×1010cfu/mL。腹腔注射SDB1后1~2小时,昆明小白鼠出现精神萎靡、食欲废绝、眼睛发炎、腹泻等临床表现;腹腔注射后10小时发生死亡;腹腔注射后12~24小时死亡达高峰,死亡数量与SDB1的腹腔注射量呈明显剂量-效应关系;耐过的昆明小白鼠2 d后不再发生死亡,且精神、食欲等逐步恢复正常。死亡昆明小白鼠主要病理剖检变化为肺脏肿大、瘀血、出血严重;胃肠充血、出血;肝脏、脾脏肿大。SDB1对昆明小白鼠的LD_(50)为3.80×10~8cfu,其95%可信限为2.96×10~8~4.88×10~8cfu。说明SDB1对昆明小白鼠有致病和致死性。 | 余丹 邹成义 李斌 屈东 汪林书 | 2018 | 黑龙江畜牧兽医2018，0，15： | 2 |
| 3 | 芥子碱降解菌对肉种鸡产蛋性能和免疫功能的影响显示文摘【目的】本试验研究一次性腹腔注射芥子碱降解菌1(sinapine-degrading bacteria 1,SDB1)对肉种鸡产蛋性能和免疫功能的影响。【方法】将324只50周龄肉种鸡,平均分成6组,每组6个重复,每个重复9只鸡。试验第1天,组1一次性腹腔注射1 m L生理盐水,组2~6分别一次性腹腔注射1 m L浓度为106、107、108、109、1010CFU/m L的SDB1菌液。试验期14 d,各组饲喂同一基础饲粮。试验结束后,测定产蛋性能、血清Ig M、Ig G、s Ig A、IL-1、IL-2、IFN-γ、C3、C4及外周血T淋巴细胞亚群。【结果】(1)低剂量组产蛋率显著(P<0.05)高于高剂量组。(2)高剂量组血清Ig M、IL-1和IL-2水平显著(P<0.05)高于低剂量组。(3)各组血清Ig G、s Ig A、C3、C4、IFN-γ和外周血CD3+,CD3+CD4+,CD3+CD8+淋巴细胞比例差异不显著(P>0.05)。【结论】低剂量SDB1(≤107CFU/m L)对肉种鸡产蛋性能和免疫功能没有不良影响,高剂量SDB1(≥108CFU/m L)能显著提高肉种鸡部分体液免疫和细胞因子水平,但会降低其产蛋性能。 | 余丹 李斌 屈东 邹成义 汪林书 | 2018 | 西南农业学报2018，31，6： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员