一例猪瘟与猪圆环病毒2型混合感染的诊治

Diagnosis and treatment of a case of mixed infection of classical swine fever and porcine circovirus type 2

在生猪养殖过程中,多种病原混合感染的情况较为常见,并这种混合感染也导致传统的临床诊断容易造成误诊或漏诊,继而延误诊断治疗从而造成经济损失。2020年8月初,孟连县某养猪场保育猪群零散发病,临床主要表现为发热、咳喘、打堆、被毛凌乱无光泽、局部皮肤发绀、消瘦、饮食欲下降、生长滞缓,个别猪只伴便秘和腹泻交替。病理剖检变化显示为肾脏点状出血,脾脏边缘梗死,胸腹腔淋巴结、肠系膜淋巴结、下颌淋巴结、腹股沟淋巴结肿大或伴有出血,肺炎伴局部肝变,回盲瓣或局部空回肠黏膜脱落、出血、坏死或溃疡。实验室诊断结果表明,该病由猪瘟病毒(CSFV)与猪圆环病毒2型(PCV2)混合感染所致,经过猪瘟及猪圆环病毒疫苗的加强免疫,辅助控制继发感染及对症治疗,该场保育猪群全部恢复健康。

in the process of pig breeding,mixed infection of multiple pathogens is common,but this kind of mixed infection also leads to misdiagnosis or missed diagnosis of traditional clinical diagnosis,and then delay diagnosis and treatment,resulting in economic losses.At the beginning of August 2020,a pig farm in Menglian County suffered from sporadic diseases.The main clinical manifestations were fever,cough and asthma,piling,messy and lusterless coat,local skin cyanosis,emaciation,decreased appetite,slow growth,and individual pigs with constipation and diarrhea alternately.Pathological autopsy showed renal punctate hemorrhage,splenic marginal infarction,enlargement or hemorrhage of thoracic and abdominal lymph nodes,mesenteric lymph nodes,mandibular lymph nodes and inguinal lymph nodes,pneumonia with local liver degeneration,ileocecal valve or local jejunal ileal mucosa with mucosal shedding,hemorrhage,necrosis or ulcer.The results of laboratory diagnosis showed that the disease was caused by the mixed infection of CSFV and PCV2.After the enhanced immunization with CSFV and PCV2,the secondary infection was controlled and symptomatic treatment was given,all the pigs recovered to health.