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新疆和田地区某鹅场鹅群细菌性疾病的调查研究

Investigation and study of bacterial diseases in a goose farm in Hotan Prefecture of Xinjiang Uygur Autonomous Region

  • 摘要: 为了调查新疆和田地区鹅群发病和常见细菌性疾病的流行情况,试验以和田地区某鹅场5 740只雏鹅为研究对象,连续21 d记录鹅群每日发病率和死亡率,发病鹅临床症状,死亡鹅病理变化,采集病死鹅的内脏样品296份进行细菌分离鉴定,利用特异性引物进行PCR扩增确定菌株种类。结果表明:鹅群总发病率为95.73%,总死亡率为73.87%;主要临床症状共有7种,分别为腹泻、神经症状、腹泻合并神经症状、口鼻流血、眼睛变白并肿胀、头部肿大、关节肿胀;病理变化有9种,分别为肝脏肿大、淤血,肝脏发黄,肝脏上有白点,肝脏上有白色节结,心周炎和肝周炎,尿酸盐沉积,腺胃乳头出血,腹水,肠道出血;从296份内脏样品中共分离得到240株细菌,大肠杆菌、奇异变形杆菌和沙门氏菌的检出率分别为75.0%(222/296)、4.4%(13/296)和1.7%(5/296),混合感染率为2.4%(7/296)。说明该鹅场的发病率及死亡率较高,临床症状以腹泻为主,病理变化以肝脏肿大、淤血为主,存在大肠杆菌、沙门氏菌和奇异变形杆菌等单独感染和混合感染,发病情况复杂。

     

    Abstract: In order to investigate the incidence of geese and common bacterial diseases in Hotan Prefecture of Xinjiang Uygur Autonomous Region, the experiment took 5 740 chicks from a goose farm in Hotan Prefecture as the research object. The daily morbidity and mortality of geese, clinical symptoms of sick geese, and pathological changes of dead geese were recorded for 21 consecutive days. 296 visceral samples of sick and dead geese were collected for bacterial isolation and identification; PCR amplification was used in specific primers to determine bacterial species. The results showed that the total incidence rate of geese was 95.73%, and the total mortality rate was 73.87%. There were 7 main clinical symptoms, namely diarrhea, neurological symptoms, diarrhea combined with neurological symptoms, bleeding from the mouth and nose, white and swollen eyes, swollen head, and swollen joints. There were 9 kinds of pathological changes, namely liver enlargement and congestion, yellowing of the liver, white spots on the liver, white nodules on the liver, pericarditis and perihepatitis, urate deposition, glandulogastric papilla bleeding, ascites, intestinal bleeding. A total of 240 bacterial strains were isolated from 296 visceral samples, with detection rates of 75.0%(222/296), 4.4%(13/296) and 1.7%(5/296) for Escherichia coli, Proteus mirabilis and Salmonella, respectively, and 2.3%(7/296) for mixed infections. The results indicated that the morbidity and mortality rate of the goose farm were high, and the clinical symptoms were mainly diarrhea; the pathological changes were mainly liver enlargement and congestion; there were separate or mixed infections of E. coli, Salmonella and Proteus mirabilis, and the morbidity was complicated.

     

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