Study On The Pork Quality Chain Management In The Environment Of Supply Chain

China is the largest producer and consumer of the world, but pork quality safety issuesoften happen, whose root lies in the disruption of quality chain resulting from substandardquality safety behaviors of entities involved in pork supply chain, like pig farms and farmers,slaughtering and processing companies and supermarkets, as well as their lack of informationsharing. An in-depth and systematic study on pork quality chain management in a supplychain is made by comprehensively using methods like system analysis, contrastive analysis,model analysis and causal analysis, based on literature review, expert interview and fieldsurvey, employing previous studies of high quality pork supply chain management researchteam as a platform, taking pork quality safety and quality control as a focus, centered aroundselection of key chain nodes in pork quality chain in a supply chain and coupling mechanismanalysis, guided by theories like supply chain management, quality chain management,system control. There are mainly six parts included, i.e. introduction of related theories,systematic understanding of the subject, basic framework construction of pork quality chain,selection of key chain nodes in pork quality chain, coupling mechanism analysis of key chainnodes, and tactics analysis of quality chain management.It is expected that quality island issueof entities involved in pork supply chain is to be tackled, and a smooth, effective, stable andcontrolable pork quality chain from inputs supply, hog breeding, slaughtering and processingand marketing is be formed, with a purpose to improve China’s pork quality, consumersatisfaction, competitiveness of pork supply chain, as well as offer theoretic reference andpractical guidance for improving individual interest of entities in pork supply chain.It is an important prerequisite for the study to understand and grasp theories on supplychain management and quality chain management. Firstly, structure and charateristics of highquality pork supply chain are analyzed, and concept and charateristics of pork quality chainare explained. Pork quality chain is a collective process that involves pig farms and farmers,slaughtering and processing companies and supermarkets, and it has charateristics likeorganizaiton complexity, quality extension, chain nodes synergy and process dynamics.Secondly, it is pointed out that the key and focus of pork quality chain management lies in thejudgement and selection of key chain nodes in different tiers of pork quality chain, based oncontent analysis of supply chain management and quality chain management. Formationmechanism of pork quality in a supply chain is analyzed in detail, and it is concluded thatformation of pork quality is mainly influenced by five factors, i.e. inputs purchase, hog breeding management, hog slaughtering and processing, pork distribution and marketing,environmental sanitation maintenance.Systematic analysis of the structure and function of pork quality chain in a supply chainis the basis of this paper. Main chain nodes in different tiers of pork quality chain in a supplychain is analyzed in detail, and their relationships as well. Whole picture of pork quality chainin a supply chain is presented from4aspects, i.e. connotation, charateristics, structure andfunction. It shows that5Ⅰtier chain nodes, i.e. input purchase, hog breeding management,hog slaughtering and processing, pork distribution and marketing, and environmentalsanitation maintenance, are included in pork quality chain in a supply chain; sub chain nodesare included in each Ⅰtier chain node. Coherent, causal and cross relationships exist betweenⅠtier chain nodes, and coherent, parallel, complementary, and cross relationships existbetween sub chain nodes. Based on the analysis of the construction of pork quality chainnodes in a supply chain, it is concluded that pork quality chain possess functions likeformation and realization of pork quality system, reduction and attenuation of pork qualityfluctuation, prevention and control of pork quality loss, and cultivation and maintenance ofpork quality reputation.One of the keys of this study is to choose key chain nodes in different tiers. Based onconditions of key chain node in quality chain, importance recognition of key chain nodes indifferent tiers of parties surveyed and their practices, as well as ranking result of TOPSISmodel, importance of chain nodes in different tiers in pork supply chain is analyzed. It showsthat key chain nodes in pork quality chain include4Ⅰtier chain nodes, i.e. input purchase,hog breeding management, hog slaughtering and processing, and environmental sanitationmaintenance;15Ⅱ tier chain nodes like boar/piglet purchase and disease prevention andtreatment (including bio-safety control and harmless disposal of waste);26Ⅲ tier key chainnodes like boar/piglet selection. They function indenpendently as well as interactively, andcollectively influence quality safety condition of live pig and pork.The core of this paper is to analyze the coupling mechanism of key chain nodes in porkquality chain in a supply chain. It is concluded that key chain nodes coupling of pork qualitychain in a supply chain has characteristics of interconnectivity, network, integrity, variety,harmony and dynamics. Based on its network charateristics, causal analysis and graphanalysis are employed to analyze key chain nodes coupling mechanism from perspectives ofhorizontal coupling mechanism inside Ⅰtier chain nodes and vertical coupling mechanismbetween Ⅰ tier chain nodes. Based on system theory, dissipation structure theory, and coordination theory, key chain nodes and whole coupling mechanism of pork quality chain ina supply chain are analyzed. It shows that the entire coupling of chain nodes in pork qualitychain in a supply chain is in essense a gradual evolution process from elementary organizedstructure to advanced organized structure.The purpose of this study is tactics analysis of pork quality chain management in asupply chain based on entropy model. On the basis of analysis of connotation and operationmechanism of pork quality chain in a supply chain, two fundamental paths to improve thesmooth and stable operation of pork quality chain are to increase negative entropy flow anddecrease positive entropy flow. Managment tactics that help to expedite coupling of porkquality chain in a supply chain are analyzed in detail by using the theories and methods ofdissipation structure, with a purpose to improve the quality awareness and behaviorcapabilities of pig fams and farmers, slaughtering and processing companies in key chainnodes, and supermarkets, as well as promote the coupling of chain nodes and entire porkquality chain.