CAJ | 학술논문

为调查辽宁阜新地区奶牛隐性乳房炎患病情况，选取该地区某规模化养殖场，对190头泌乳期奶牛进行体细胞检测。结果显示，该地区奶牛隐性乳房炎患病率为34．2％，乳区阳性率为8．5％。采用微量肉汤稀释法检测阳性乳样分离到的大肠埃希菌对14种抗菌药物的敏感性。结果表明，26株隐性乳房炎大肠埃希菌分离株对甲砜霉素和头孢氨苄耐药率为100％、氟苯尼考73．1％、土霉素65．4％、头孢唑啉57．7％、阿莫西林30．8％、四环素30．8％、恩诺沙星26．9％、阿奇霉素19．2％、氧氟沙星15．4％、多西环素11．5％、环丙沙星11．5％，对头孢噻呋和庆大霉素耐药率为0。建议该地区根据药敏试验结果选取药物进行治疗。
위조사료녕부신지구내우은성유방염환병정황，선취해지구모규모화양식장，대190두비유기내우진행체세포검측。결과현시，해지구내우은성유방염환병솔위34．2％，유구양성솔위8．5％。채용미량육탕희석법검측양성유양분리도적대장애희균대14충항균약물적민감성。결과표명，26주은성유방염대장애희균분리주대갑풍매소화두포안변내약솔위100％、불분니고73．1％、토매소65．4％、두포서람57．7％、아막서림30．8％、사배소30．8％、은낙사성26．9％、아기매소19．2％、양불사성15．4％、다서배소11．5％、배병사성11．5％，대두포새부화경대매소내약솔위0。건의해지구근거약민시험결과선취약물진행치료。
In order to investigate the subclinical mastitis prevalence situation in Fuxin area of Liaoning prov-ince,190 milk samples from lactation cows were tested for somatic cell count (SCC).The results showed that the prevalent rate in this area was 34.2%,and the milk area positive rate was 8.5%.Micro-broth di-lution method was applied to measure the antimicrobial susceptibility to 14 antimicrobial agents against 26 E.coli isolates from positive samples.The results indicated that isolates were 100% resistance to thiam-phenicol and cefalexin,73.1% to florfenicol,65.4% to oxytetracycline,57.7% to cefazolin,30.8% to amoxicillin,30.8% to tetracycline,26.9% to enrofloxacin,19.2% to azithromycin,15.4% to ofloxacin, 11.5% to doxycycline,11.5% to ciprofloxacin,and all isolates were susceptible to ceftiofu and gentamicin, which suggesting these two antimicrobial are effective in the treatment of subclinical mastitis in dairy cows in this area.