Study On The Safety Risks And Controlling Of Fresh Pork Supply Chain

The production and the consumption of pork in China are on the top of the world, while the safety problems of pork are still very conspicuous. The pork safety events which always break out reflect the serious safety risks existed in pork supply chain and pose threat to the comsumers' health and economic interests.The safety risks of fresh pork supply chain (FPSC) come from the operation processes of the supply chain. Based on the analysis of research status at home and abroad, the safety risks and controlling of FPSC have been studied systematically in this paper. The detailed studies are listed as follows:(1) The development of FPSC and the identification of safety risks.Firstly, the development of pork industry in China and the world, as wellas the safety status of links in supply chain such as pig-breeding, pig-transportation, slaughter-process, cold storage, pork distribution and pork selling have been analyzed. Secondly, based on investigation, the consumers' cognitive behavior to the safety risks of FPSC is also analyzed. Thirdly, the safety risks from management risks, equipment risks, technic risks and environment risks in each link of FPSC are indentified.(2) The safety risks assessment of FPSC.The assessing model of safety risks of FPSC has been built with interval-valued fuzzy comprehensive evaluation, and general safety risks from each link of the supply chain in China are assessed based on investigation. Then the influence degree of each risk source is also analyzed. The assessing results show that the general safety risk is moderate in pig-breeding, pig-transportation and cold storage, but relatively higher in slaughter-process and pork distribution, and very high in pork selling.(3) The controlling mechanism for the safety risks of FPSC.The internal controlling measures of safety risks in each link are suggested based on assessing results, as well as the internal controll of slaughter-process, pork distribution and pork selling are emphasized. Then the controlling and coordinating mechanism for the safety risks between the supply chain subjects are analyzed in terms of the static game and dynamic evolution game theory. Moreover, in terms of the cortrolling cost, linear programming and fuzzy chance-constrained programming are used to optimize the purchasing costs of fresh pork in chain supermarkets based on safety costs under the mode of supply chain.(4) Fast detection technology in the controlling of safety risks of fresh pork logistics.The detection principle and application of computer vision and artifical olfaction on the controlling of safety risks of fresh pork logistics are elucidated. Then, a new kind of fast quantitative detection technology based on chromatic aberration to the logistics quality of pork are developed by experimental research. Moreover, this technology is used to detect the changes of pork quality in different logistics modes, as well as safety risks in these modes are evaluated. The results show that safety risks are higher in the logistics of warm fresh pork, while lower in the logistics of chilling pork, and more lower in the logistics of chilled pork with vacuum package. The logistics mode of low temperature is proposed to reduce the safety risks.(5) The controlling models of safety risks of FPSC based on information coordination.The problems of information transmission in current mode of supply chain are analyzed in terms of stochastic Petri net theory, and the result shows that there is a longer time delay in the transmission of safety information under this mode. Then some new kinds of controlling models of safety risks of FPSC based on information coordination are proposed in terms of the information coordinating technology of RFID and bar code.(6) The supporting systems for controlling of safety risks of FPSC.The supporting systems for controlling of safety risks of FPSC include standard system, law-regulation system and governmental supervision system. Based on the problems existed in these systems in China and the relavtive systems in developed countries and regions, measures to perfect the supporting systems for controlling of safety risks of FPSC in China areproposed.