Being the second largest feed producing country, China has the largest pig population in the world with pig feed accounting for over 40% of the total feed output in China. Feed industry occupies an important position in national economy and is directly related to the quality of people’s living and health of human beings. However, there is a big gap between the overall level feed industry of China and that of the western developed countries. The main cause is that there is a deep research and broad extension of key pig feed industry technology and a strong necessary technology system in developed European and American countries. This is the important factor that constrained a healthy development of Chinese feed industry.

To counter this problem, the project of the “Study on and extension of pig fine quality and high efficient feed industrialized key technology” with Professor Li Defa, College of Animal Science and Technology, China Agricultural University, as its principal investigator has gained an important innovative achievement in pig feed industrial key technology through 10 years of efforts. This study has clarified the mechanism of “ideal protein” promoting pig protein deposition, developed technology of balanced pig ration formulated with ideal protein, and constructed balanced model of digestible amino acid. The technology has constructed the standard method for examining the amino acid biological efficiency of pig feed. On the basis of this, the technology can examine the components of 7 categories of typical pig rations, and the ileum digestibility of over 60 feed amino acids. In a period of 5 years, the study had systematically investigated the digestible energy, ileum performance and true digestible amino acid requirements in four body weight periods: 3 kg~8 kg, 8 kg ~20 kg, 20 kg ~ 50 kg and 50~ 80 kg. Through typical commercial pig lean meat growth index examination in five regions; North China, South China, Northeast China, Central China and Southwest China, the study has constructed the first pig nutrition requirement dynamic model in China. Integrated with the pre-study findings, the study has revised the first version of “pig feeding standard in China”. The study has put forward an anti-stress nutrition controlling technology for lactating sows and piglets, systematically investigated the effect of raw material milling fineness, homogeneous mixture, pelleting technology and expansion technology of feed quality. The study has determined processing technology parameters for different types of products. After organizing experts within the industry in the appraisal, the Ministry of Education holds the view that the research achievements gained by the project has reached the international advanced level, and has very strong practicality and high mature technology. The research achievement has already been extended to over 278 feed and pig enterprises in 30 provinces, municipalities and autonomous regions. The project has accumulatively extended 25.216 million tons of different kinds of feed with direct economic benefit of 1.5 billion RMB significant social benefits.

Source: www.pigswine.com