摘要: 为了确定导致美洲红鹮肝脏血肿、出血性肠道的病原,从美洲红鹮的肝脏、肠道和饲喂给美洲红鹮的小黄鱼肠道内容物均分离到三株革兰氏阴性杆菌,并采取了生化鉴定、药敏试验、小鼠致病性试验以及对美洲红鹮的肝脏和肠道内容物进行病理学观察。结果表明,分离到的三株细菌通过生化鉴定均为嗜水气单胞菌,具有α溶血,药敏试验显示仅对哌拉西林和亚胺培南耐药,对阿莫西林/克拉文酸钾中介。对小白鼠具有致病性。病理学诊断中,肝脏以血栓为主、肠道粘膜层多处出现肉芽肿。最终诊断为:美洲红鹮感染了具有致病性的嗜水气单胞菌导致其死亡。33190
毕业论文关键词:美洲红鹮;嗜水气单胞菌;分离与鉴定;诊断
Diagnosis of Aeromonas hydrophila Strian Isolated from Eudocimus ruber
Abstract: To identification the pathogen what can cause the Eudocimus ruber liver hematoma and intestinal bleeding , three strains of gram negative bacilli were isolated from liver and intestinal of the Eudocimus ruber and intestinal contents of Pseudosciaena polyactis that fed with Eudocimus ruber. The isolated bacterium were identified by biochemical test, drug sensititytest, mouse pathogenicity test and pathological observation of liver and intestinal contents. The results show three strains of gram negative bacilli were all Aeromonas hydrophila with α hemolysis, which identified by biochemical test. The drug sensitivity test showed that there were only resistance to piperacillin and imipenem, with amoxicillin / clavulanate mediators. They had pathogenic to mice. In the pathological diagnosis, the liver had mainly thrombosis, and there were multiple granuloma in the intestinal mucosa. The final diagnosis : Eudocimus ruber has died from the Aeromonas hydrophila.
Key words: Eudocimus ruber; Aeromonas hydrophila; Isolation and Identification; Diagnosis
目 录
摘要1
关键词1
Abstract1
Key words1
引言1
1 材料与方法2
1.1 实验仪器与试剂 2
1.2技术路线2
1.3研究方法2
1.3.1病原菌的分离与培养2
1.3.2菌落形态的特征观察3
1.3.3生化鉴定3
1.3.4药敏试验3
1.3.5小鼠致病性试验3
1.3.6病理学观察4
2 结果6
2.1细菌分离6
2.2 生化鉴定7
2.3 药敏试验7
2.4小鼠致病性试验8
2.5病理学观察8
3 讨论9
致谢10
参考文献10
附录11
一起美洲红鹮嗜水气单胞菌病的诊断
嗜水气单胞菌属于弧菌科气单胞菌属,是革兰氏阴性短杆菌,普遍的散布于世界的种种水体环境中[1-3],是多种水生动物的原发性致病菌,为条件致病菌,是典型的人-兽-鱼共患病病原菌,引起国内外,水产界,兽医界,医学界的高度重视[4-6]。在临床上表现出的主要特性为急性出血性败血症,慢性感染则主要体现为肠炎或皮肤溃疡[7-8]。在野生动物中,大熊猫、北极狐、海豹、企鹅、长颈鹿等均分离到了致病性嗜水气单胞菌[9-13]。嗜水气单胞菌对人类、水产动物和畜禽均有致病性[14-15]。
美洲红鹮是栖息在南美洲热带及特立尼达的一种朱鹭,是特立尼达的国鸟,是世界上珍稀、名贵的鸟类,也是最濒危的鸟类之一,它全身发红,是世界上颜色最红的鸟类之一。除了长喙呈灰黑色外,浑身上下包括腿和脚趾都呈鲜红色,具有极高的观赏价值[16]。2016年11月,南京某动物园的美洲红鹮群体连续死亡4只,均在临床表现精神沉郁后不久死亡。剖解发现肝脏呈现出不同程度的血肿,肠道有多处出血、卡他,部分肠壁变薄等现象。从美洲红鹮的肝脏和肠道中均分离到细菌,对其进行生化鉴定、药敏试验、病理学观察和小鼠致病性试验,确定为致病性嗜水气单胞菌。同时,在饲喂美洲红鹮的小黄鱼的肠道中也分离出了致病性嗜水气单胞菌。 美洲红鹮嗜水气单胞菌病的诊断:http://www.youerw.com/yixue/lunwen_30136.html