Caldwell D J, Hargis B M, Corrier D E, DeLoach J R
Department of Poultry Science, Texas Agricultural Experiment Station, College Station, USA.
Avian Dis. 1998 Apr-Jun;42(2):381-4.
In this study we tested the hypothesis that the frequency of Salmonella isolation from protective foot covers worn in individual broiler production houses would compare favorably to isolation rates obtained from conventional drag-swab methods. Salmonella was detected with equal frequency from protective foot covers and drag-swab assemblies on nine individual broiler farms over three separate sampling periods. Salmonella was detected in 13 of a total 27 individual samplings by culturing the protective foot covers, whereas positive detections occurred in 16 of a total 27 samplings when using the drag-swab method. Of the total number of houses identified as positive, these frequencies were unaltered when evaluated against the flock status of each farm at the time of sampling. Both methods were equally as likely to detect Salmonella when houses were either vacant (awaiting the placement of the next flock) or occupied (currently housing chickens of any age). In addition to highlighting the development of a potential new Salmonella monitoring technique, this study reinforces our current understanding regarding the importance of stringent biosecurity practices on poultry farms.
在本研究中，我们检验了以下假设：从个体肉鸡生产鸡舍中使用的防护脚套分离出沙门氏菌的频率，将优于通过传统拖拭法获得的分离率。在三个不同的采样期内，在九个个体肉鸡场的防护脚套和拖拭组件中检测到沙门氏菌的频率相同。通过培养防护脚套，在总共27次个体采样中的13次检测到沙门氏菌，而使用拖拭法时，在总共27次采样中的16次检测呈阳性。在确定为阳性的鸡舍总数中，根据采样时每个农场的鸡群状况进行评估时，这些频率没有变化。当鸡舍为空（等待下一批鸡群入驻）或有鸡（目前饲养任何年龄段的鸡）时，两种方法检测到沙门氏菌的可能性相同。除了突出一种潜在的新型沙门氏菌监测技术的发展外，本研究还强化了我们目前对家禽养殖场严格生物安全措施重要性的理解。
