Using LCA To Analyze The Ecological Benefits Of Different Chicken Breeding Models

This study mainly conducts life cycle assessment and comparative study on ecological benefits of different chicken farming models.Through the analysis of the research status at home and abroad,the environmental impact and ecological benefits of six different chicken breeding models were analyzed and evaluated by using the life cycle assessment(LCA)method.The research objects include cage environment control,ground floor environment control,free-range breeding in greenhouses,ecological farms,family farms and free-range farming by farmers.The ecological benefits of each model were analyzed in detail by comparing the impact of each model on feed type and amount,farm area and density,energy and water consumption,waste disposal,and health and safety.The results of the study show that models such as ecological farms and family farms have better performance in terms of environmental and ecological benefits,while models such as cage environment control and ground floor environment control have better performance in terms of energy consumption,water resource utilization,and waste disposal.There is a large room for improvement.Specifically,the energy consumption of ecological farms and family farms is about 25%lower than that of cage environment control and ground floor environment control,water resource utilization is about 30%lower than the latter,and waste disposal is lower than that of the latter.The latter is about 20%lower.There is room for improvement in these aspects of cage environment control and ground level environment control.The specific data show that the global warming and land acidification potential of the ecological farm is the highest,which is 2.98 kg CO2 equivalent and 1.77E-03 kg SO2 equivalent;while the family free-range farming has the lowest impact,which is 0.777 kg CO2 equivalent and-2.85E-03 kg SO2 equivalent.Ecological farms had the highest potential for freshwater eutrophication and marine eutrophication at 5.06E-04 kg P-eq and 1.29E-03 kg Neq,while family farms had the lowest impact at 6.43E-05 kg P-eq and 2.56E-05 kg N equivalent.Overall,ecological farms have greater environmental impacts on most indicators,while family farms and farmers’ free-range farming have relatively less environmental impacts.To this end,we put forward a series of suggestions,including optimizing the type and amount of feed,reducing breeding density,improving energy efficiency,improving waste treatment technology,etc.,in order to improve the ecological efficiency and sustainable development level of chicken farming.Our suggestions on optimizing the type and amount of feed,reducing breeding density,improving energy utilization efficiency,and improving waste disposal technology can effectively improve the performance of cage environment control and ground floor environment control models,and improve their ecological benefits.The implementation of these recommendations can reduce the energy consumption of these models by about 15%,reduce the use of water resources by about 20%,and increase the efficiency of waste treatment by about 15%.Our research provides useful references and suggestions for the sustainable development of chicken farming industry.In response to these problems,the study puts forward some suggestions,including optimizing the type and amount of feed,reducing the breeding density,improving energy efficiency,and improving waste treatment technology.This study provides useful references and suggestions for the sustainable development of the chicken farming industry through the life cycle assessment and ecological benefit comparison of different chicken farming models.