Interview with Professor Li Defa of China Agricultural University

Introduction: newly built webpage 1 The project of "research and promotion of key technologies for industrialization of high quality and efficient pig feed" hosted by Professor Li Defa, School of animal science and technology, China Agricultural University won the second prize of national science and technology progress in 2002 On a sunny spring day, the reporter came to Professor Li Defa's laboratory Qtt Li Defa said that China is the world's largest pig raising country and the world's second largest feed producer, with pig feed accounting for more than 40% of the total Feed industry plays an important role in the national economy, and is directly related to the quality of people's life and health However, there is a big gap between the overall level of China's feed industry and western developed countries For example, the conversion rate of pig feed in the United States is about 15% higher than that in China, and the daily gain of pigs is about 10% higher than that in China The main reason is that the research on Key Technologies of pig feed industrialization in developed countries in Europe and America is extensive and in-depth, and the supporting technologies are systematic The key factors restricting the healthy development of China's feed industry are: the feeding standard lags behind the actual production requirements, the database of digestible energy and digestible amino acids is not perfect, and the research of animal nutrition and feed processing is out of line QTt Since August 1990, the project team led by Professor Li Defa has systematically and comprehensively carried out nationwide cooperation in three aspects: basic research on digestive physiology and metabolic regulation, pig feeding standard and Research on industrial supporting technology Through 10 years of research, the team has taken the following measures: feeding experiment, digestive metabolism experiment, slaughter experiment, ultrasonic technology, isotope technology and computer model A series of achievements have been obtained: the standard method for determining the digestibility of amino acids in feed has been established, the first digestible amino acid database in China has been preliminarily established, the first dynamic model for pig nutrition needs in China has been established, and the first version of China's pig feeding standard has been revised He published 76 papers, 9 of which were included in SCI and cited by others for more than 40 times He has published 7 related works, 8 annual scientific research reports and 6 sets of supporting software for development results 105 pig feed products were developed in each stage The results have been extended to 278 feed and pig raising enterprises in 30 provinces, cities and autonomous regions, with a total of 25.216 million tons of various feeds promoted, realizing a direct economic benefit of 1.5 billion yuan (calculation report of Agricultural Economic Research Institute of Chinese Academy of Agricultural Sciences) At the same time, the implementation of the project improves feed conversion rate, saves feed resources, improves the utilization degree and efficiency of local feed resources in China, and increases farmers' income By reducing the amount of nitrogen discharged from feces and urine, the pollution of pig industry to the environment is reduced, and the ecological environment is protected In the implementation of the project, 8 doctors and 12 masters were trained, and more than 1200 people in the industry were trained With the project achievements of "tomorrow 1% growth pig high efficiency premix" and "tomorrow 1% piglet high efficiency and high quality premix" successively won the titles of national key new products in 1998 and 2001, the consumers' demand for high quality and safe pork and the further strengthening of people's awareness of environmental protection have provided a good opportunity for the further promotion of the achievements, which can improve me more quickly in general The technical level of China's feed industry and pig industry has achieved greater economic and social benefits The implementation of qtt project has promoted the development of animal nutrition research and feed preparation technology from static to dynamic, modeling and precision, changed ideal protein from theory to practical technology, and provided scientific theoretical basis for the utilization of unconventional feed and local feed resources It will play an important role in the structural optimization of feed industry and product upgrading Qtt mentioned the achievement, Professor Li Defa especially emphasized the important role of team spirit In 1996, the feed industry center of the Ministry of agriculture was established with him as the director of the center, and the project began to rely on it In order to ensure the successful completion of the project, the feed industry center has adopted advanced management measures since its establishment, such as the SCI policy and chest card system recently introduced by President Chen, "the center" has been implemented as early as three years ago In terms of research direction, the center also focuses on the field of pig nutrition and feed science It is with this kind of "advance" in management and "specialization" in research that Professor Li Defa closely unites the research and management personnel of the project, forms a united and hard-working excellent team, and makes one breakthrough after another in the research and promotion of technology The "tomorrow brand" feed produced by the "center" has also become a famous brand in China Professor qtt Li Defa admitted that his success also benefited from his understanding of society Before he was 21 years old, he became the Secretary of the brigade Later, he retired from the post of secretary to become the captain and company commander of the militia But it was this experience at the grassroots level that enabled him to have more and deeper understanding of society and life, and to know how to treat others well and cherish every moment of the present Professor Li Defa said with a smile that whoever sent him e-mail, no matter praise or abuse, he would reply, even if it was just a yes or no All of these are indispensable to enable Professor Li to do well in scientific research and management Qtt in 1999, the enterprises under the feed industry center of the Ministry of agriculture were cheated of their money, and the enterprises fell into a dilemma The bank's debt has not yet been paid, the equipment has to fight for itself, followed by the brain drain Professor Li said helplessly that some of his graduate students at that time, even if they promised to give them the same treatment in the outside company, were not willing to stay In the face of many difficulties, Professor Li Defa raised money from many sources and managed to survive He is most proud that his SCI papers were published without any delay, and the project is still progressing in an orderly manner Professor Li Defa of qtt said that there is still something to be improved in the research of pig nutritional requirement and the construction of digestible amino acid database Research can not be satisfied with domestic first-class, but also ahead of time to the world For this reason, he is still working tirelessly every day, still without the concept of weekends, still less than a few times a month at home to eat with his wife, still coming back from other places and flying straight to the feed industry center Qtt is still busy for the rise of national feed industry QTt