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Qiao Shiyan has long been engaged in the research of animal protein amino acid nutritional metabolism. He pointed out that soybeans imported from abroad account for more than 85% of China's total output,椒盐巴邻丹 and the import price is constantly rising. In order to reduce the dependence on protein feed imports, he proposed to replace soybeans with industrially produced amino acids. Through continuous efforts, Qiao Shiyan's team has developed a variety of new feed amino acids.