| China’s pig farming industry continues to develop at a high speed,supporting the overall construction of a moderately prosperous society and providing material support for the construction of a socialist modernized country.Currently,China’s annual output of pigs is about 700 million,accounting for half of the world’s total production and consumption.However,China’s feed conversion efficiency for pigs is only 80% of the international advanced level,and the biggest risk to national food security and incremental mining lies in feed grain security.As the "core chip" of the industry chain,pig breeding determines the efficiency and benefits of the industry.Modern pig breeding has become a resource-dependent,technology-intensive,and capital-intensive global industry.Establishing a breeding pig resource center,promoting independent innovation in breeding,and overcoming the technical bottlenecks are important ways to achieve self-strengthening and self-reliance in the breeding industry.On the other hand,pigs have a nervous system,cardiovascular system,digestive system,immune system,physiological metabolism,etc.that are very similar to humans.They have a short reproductive cycle and are excellent model animals for medical research in humans.With an annual market value of over 100 billion US dollars,the industry is showing a growing trend year by year.The animal husbandry discipline of Jiangxi Agricultural University is a leading discipline in the "Double First-Class" advantages in Jiangxi Province,with significant research and innovation achievements in the field of "one pig,two uses".Taking the planning and design of the breeding pig resource center of Jiangxi Agricultural University and the optimization of key processes of environmental control and protection as an example,this article scientifically plans and constructs a high-biosafety research base to ensure the protection and storage of excellent pig resources,carry out high-level scientific research,and cultivate high-level breeding talents.The main innovative points are as follows:(1)Scientific planning and design of high biosafety: The functional areas are arranged in six points,and the epidemic prevention area is equipped with a five-level barrier.The construction tasks of two libraries,two groups,and three areas are met,and people,materials,vehicles,and pigs are completely separated.The water-urine-blister-manure system,fully automatic feeding system,automatic temperature control system,deodorization system,and resource utilization system are adopted to achieve the integration of organic fertilizer treatment and biogas utilization,and to achieve the goal of full ecological and pollution-free production.(2)Optimization of the ventilation system: Using ANSYS to simulate the airflow field in the pig house,targeted optimization schemes are proposed after analysis.The optimized schemes are then simulated and compared with the original schemes to determine the effectiveness of the optimization.Applying it to each breeding unit results in increased uniformity of ventilation and higher wind speed.(3)Optimization of environmental protection system: According to the amount and quality of wastewater produced by the project,the treatment plan is selected according to the principle of maintenance-free and efficient operation,and the treatment process and treatment method are determined.For animal carcasses and their by-products,we adopt high temperature microbial degradation,and for manure,we adopt "intelligent control + molecular film covering static composting + microbial anaerobic fermentation technology" for treatment.Through these measures,we can realize the harmless treatment,manure recycling,green emission and breeding combination of pig farms,and also guarantee the high biological safety of the breeding pig resource base. |
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