McKinley G A, Fagerberg D J, Quarles C L, George B A, Wagner D E, Rollins L D
Appl Environ Microbiol. 1980 Sep;40(3):562-6. doi: 10.1128/aem.40.3.562-566.1980.
Nine swine slaughter plants and 19 swine production units were randomly selected for sampling from the six highest swine-producing states representing a total of 64% of the United States swine production. Three composites of 10 fresh swine fecal samples were obtained from each slaughter plant, representing three different farm sources of swine. Two composite fecal samples were collected from two different production pens from each production unit. Samples were analyzed for salmonellae. Isolated salmonellae were biochemically and serologically identified and tested for antibiotic susceptibility and resistance transfer ability. Salmonellae were recovered from swine at seven of the nine slaughter plants and 16 of the 27 composites of slaughter swine. Of the 19 production units, 3 had swine shedding salmonellae. Resistances found included streptomycin, tetracycline, and sulfadiazine. Of the 52 total isolates tested, 71% had some level of antibiotic resistance. Only 3 of 37 resistant isolated could transfer resistance under the conditions used.
从六个养猪大省中随机选取了9家生猪屠宰厂和19个生猪生产单位进行抽样，这些省份的生猪产量占美国总产量的64%。从每个屠宰厂采集了三份由10份新鲜猪粪便样本组成的混合样本，分别代表三种不同的猪场来源。从每个生产单位的两个不同生产栏中采集了两份混合粪便样本。对样本进行沙门氏菌分析。对分离出的沙门氏菌进行生化和血清学鉴定，并检测其抗生素敏感性和耐药性转移能力。在9家屠宰厂中的7家以及27份屠宰猪混合样本中的16份中检测到了沙门氏菌。在19个生产单位中，有3个单位的猪排出沙门氏菌。发现的耐药性包括对链霉素、四环素和磺胺嘧啶的耐药性。在总共检测的52株分离菌中，71%具有一定程度的抗生素耐药性。在所用条件下，37株耐药分离菌中只有3株能够转移耐药性。
