Studied the effects of nitro humic acid natrium extracted from lignite on growth performance of fattening pig, harmful gas content in shed and digestibility of feedstuff.

• 摘要研究了褐煤中提取的硝基腐植酸钠对生长育肥猪生长性能、舍内有害气体含量和饲料中营养成分消化率的影响。