Technology of low pollution Diet for Pigs (Research Progress)

[abstract] it has been a common goal for producers and nutritionists to maximize the production performance of each pig. Therefore, the general diet has little or no consideration for the excretion of nutrients, resulting in the excretion of excess nutrients (mainly nitrogen and phosphorus) with feces and urine. In recent years, the public has paid more and more attention to the environment. Through nutrition technology, it has become a hot spot in the field of science and nutrition research to improve the feed conversion efficiency of pigs and reduce the discharge of sewage (feces and urine). By supplementing synthetic amino acids and reducing dietary protein, nitrogen excretion can be significantly reduced. The addition of phytase to the diet can increase the utilization rate of phosphorus, reduce the amount of dietary phosphorus, and thus reduce the excretion of phosphorus. In addition, antibiotics, probiotics, single cell protein, yeast and organic chromium also play a certain role in reducing the waste of nutrients in pigs.