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目的了解肉鸡养殖和屠宰过程中沙门菌的污染状况,为确定从生产到销售各环节沙门菌分布和疾病可能传染源、制定公共卫生措施并评价其有效性提供科学依据。方法按照《全国食源性致病菌监测工作手册》中专项监测的采样和实验室检测要求,2010年共采集活体肉鸡肛拭样本210份,胴体样本204份,监测沙门菌污染情况。结果肛拭样本检出沙门菌23份,检出率10.95%;胴体样本检出沙门菌71份,检出率34.80%。两类样本的血清学分型构成比不同(χ2=15.7,P<0.001),肛拭样本检出的23株沙门菌中有22株印第安纳沙门菌,胴体样本中检出的71株沙门菌中有35株为印第安纳沙门菌,22株为奥尔巴尼沙门菌。结论肉鸡活体肛拭和胴体样本沙门菌检出率差异有统计学意义(χ2=33.5,P<0.001),胴体高于活体检出率,活体和胴体的沙门菌来源不同,胴体可能存在交叉污染。
Objective To understand the status of Salmonella contamination in broiler breeding and slaughter, and to provide a scientific basis for determining the distribution of Salmonella and the possible sources of disease from production to marketing and for formulating public health measures and evaluating their effectiveness. Methods According to the sampling and laboratory testing requirements of the special monitoring program in the National Foodborne Pathogenic Virus Monitoring Workbook, 210 samples of live swine anal swab and 204 carcass samples were collected in 2010 to monitor the contamination of Salmonella. Results In swallowing samples, 23 Salmonella strains were detected, the detection rate was 10.95%. 71 Salmonella samples were detected in carcass samples, the detection rate was 34.80%. There were 22 strains of Salmonella enterica in 23 Salmonella strains detected in anal swab samples, and 71 strains of Salmonella in carcass samples were found in two types of samples (χ2 = 15.7, P <0.001) 35 strains were Salmonella Indiana and 22 strains were Salmonella Albicans. Conclusion The detection rate of Salmonella in live swabs and carcass samples of broiler chickens was significantly different (χ2 = 33.5, P <0.001). The carcasses were higher than the detection rate of live births, and the sources of Salmonella in live and carcasses were different. There might be cross-contamination of carcasses .