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Quantitative risk assessment method for salmonella in broiler chicken industry chain

A Salmonella, risk assessment technology, applied in the direction of instruments, biological systems, biostatistics, etc., can solve problems such as deficiencies, achieve the effect of simple operation and improve the accuracy of assessment

Active Publication Date: 2020-10-02
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Microbiological risk assessment should consider the uncertainty of each link in the process, but at present, the uncertainty assessment process is still insufficient

Method used

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  • Quantitative risk assessment method for salmonella in broiler chicken industry chain
  • Quantitative risk assessment method for salmonella in broiler chicken industry chain
  • Quantitative risk assessment method for salmonella in broiler chicken industry chain

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Embodiment Construction

[0044] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations.

[0045] A quantitative risk assessment method for Salmonella in the broiler industry chain. This embodiment takes the quantitative risk assessment method for Salmonella in yellow-feathered broilers and white-feathered broilers as an example.

[0046] Step 1: Evaluation model input, the distribution function construction basis of each evaluation model is as follows:

[0047] 1) Breeding link model

[0048] The contamination rate and contamination level of Salmonella in the breeding process are the initial values ​​of the exposure assessment model and are important input parameters of the model. The Pert(a, b, c) distribution is widely used to describe the degree of bacterial contamination, where a, b, and c ...

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Abstract

The invention relates to a quantitative risk assessment method for salmonella in a broiler chicken industry chain. The quantitative risk assessment method comprises hazard identification, exposure assessment, hazard characteristic description and risk characteristic description. The risk feature description comprises a risk fitting method, and the risk fitting method specifically comprises the following steps: 1, evaluating model input, and constructing a distribution function of a plurality of model input parameters; 2, performing Monte Carlo simulation on the distribution function, correcting data loss, and representing a simulation result in a probability distribution mode to obtain an evaluation result; and 3, performing sensitivity analysis, analyzing the influence of each risk factoron an evaluation result, and representing the same by combining a Spearman correlation coefficient with a tornado graph. According to the method, uncertainty of microbial risk assessment and possiblenumerical values and ranges under specific conditions are described through distribution function fitting.

Description

technical field [0001] The invention relates to the field of microbial risk assessment, in particular to a method for quantitative risk assessment of Salmonella in broiler industry chain. Background technique [0002] Risk refers to the probability function of the harmful effects on human health caused by hazard factors in food and their severity. In 1955, the World Food and Agriculture Organization and the World Health Organization jointly convened a risk analysis expert committee in Geneva, Switzerland, and first proposed the concept of risk analysis in the field of food safety. Food safety risk analysis is divided into three important components: risk assessment, risk management and risk communication. Risk assessment is to calculate the size of risk and determine various factors that affect risk. Risk management is to develop and implement strategies and policies to control various risks. Risk communication is to communicate information among various risk-related organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16B5/00G16B40/00
CPCG16B5/00G16B40/00
Inventor 肖兴宁汪雯杨华肖英平
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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