Abstract:

In response to the lack of a systematic assessment system for the risk of foodborne pathogen transmission in large scale broiler farm, in order to accurately identify key risk factors, a risk index system for foodborne pathogen transmission in large scale broiler farm was constructed, including 4 levels I, 13 levels II, and 78 levels III, based on literature research and field investigations of 100 large scale broiler farm in 11 provinces across the country. The Analytic Hierarchy Process was used to determine the weights of the indicators and the order. The results indicate that: (1) The indicator system has passed the consistency test and is scientifically reliable. (2) Ranking of the proportion of core risk factors: disease prevention and control>biosafety> site facilities> management. (3) The primary risk factor is the detection of exogenous microorganisms (live vaccines, feed, and water) in disease prevention and control, with weights of 4.205%, 4.126%, and 3.999%, respectively. The second is the harmless treatment of dead chickens (2.847%) and disinfection facilities and equipment in the field (2.828%). This survey fills the research gap in the risk factors of foodborne pathogen transmission in large-scale broiler farms, clarifies the core risk points of foodborne pathogen transmission in large scale broiler farm, and constructs a scientific risk assessment system. In the future, the effectiveness of indicators can be verified through on-site monitoring data, and the indicator system can be optimized for different regions and scales of broiler farms to provide more targeted technical support for precise prevention and control.

Key words: large scale broiler farm, foodborne pathogen, Analytic Hierarchy Process, risk factors, pathogen transmission