The results indicated that all isolates exhibited a susceptibility to amikacin and ceftriaxon , and 67 isolates showed a greater or lesser degree resistance to streptomycin , kanamycin , gentamicin , ampicillin , tetracycline , chloramphenicol , florfenical , cefotaxime , cephalothin and ceftiofur , to which 22 isolates exhibited a susceptibility . some isolates showed resistance to multiple antibiotics and displayed a highest level resistance to streptomycin with a frequency of 43 . 8 % , followed by tetracycline with a frequency of 30 . 3 % 结果表明，所有分离菌株均对阿米卡星和头孢曲松敏感； 67株对链霉素、卡那霉素、庆大霉素、氨苄西林、四环素、氯霉素、氟苯尼考、头孢噻肟、头孢噻吩、头孢噻呋表现出不同程度的耐药性，其中对链霉素的耐药率最高，为43 . 8 ，其次为四环素( 30 . 3 ) ，其余22株为敏感菌株。
