Quantitative Veterinary Epidemiology Group, Wageningen Institute of Animal Sciences, Wageningen University, Wageningen, The Netherlands.
Vet J. 2011 Sep;189(3):302-5. doi: 10.1016/j.tvjl.2010.08.003. Epub 2010 Sep 17.
The prevalence of methicillin resistant Staphylococcus aureus (MRSA) in pigs at abattoirs is higher than in pigs sampled on farms. This study investigated whether MRSA negative pigs can become MRSA positive during transportation from the farm to the abattoir after exposure to other pigs and environmental sources of MRSA. Nasal swabs were collected from four batches of pigs during loading at the farm, on arrival at the abattoir and after stunning. Environmental wipes were taken from lorries after transporting pigs and from lairages after holding pigs. All pigs (n=117) tested MRSA negative before transportation. On arrival at the abattoir, 12/117 (10.3%) pigs in two batches tested MRSA positive. In lorries that tested positive after transportation, the prevalence of MRSA positive pigs was 21.1%, whereas no MRSA was detected in pigs that had been transported in lorries that tested negative after transportation. At stunning, all batches and 70/117 (59.8%) pigs tested MRSA positive. Pigs can become MRSA positive in the short period of time during transportation from the farm to stunning at the abattoir.
在屠宰场的猪中，耐甲氧西林金黄色葡萄球菌（MRSA）的流行率高于在农场采样的猪。本研究调查了在接触其他猪和 MRSA 的环境来源后，从农场运往屠宰场的过程中，MRSA 阴性的猪是否会变为 MRSA 阳性。在农场装猪时、到达屠宰场时和电击晕后，从四批猪中采集了鼻腔拭子。从运输猪的货车和存放猪的畜栏中采集了环境拭子。所有待运猪（n=117）在运输前均检测为 MRSA 阴性。在到达屠宰场时，两批猪中有 12/117（10.3%）检测为 MRSA 阳性。在运输后检测呈阳性的货车中，MRSA 阳性猪的比例为 21.1%，而在运输后检测呈阴性的货车中，未检测到 MRSA。在电击晕时，所有批次和 70/117（59.8%）的猪检测为 MRSA 阳性。猪在从农场运往屠宰场电击晕的短时间内可能会变为 MRSA 阳性。
