state agrarian university named after N.I. Vavilov MANIESON Victor Emmanuel, Saratov state agrarian university named after N.I. Vavilov VASILIEV Alexey Alexeevich, Saratov state agrarian university named after N.I. Vavilov SIVOKHINA Lyubov Alekcandrovna, Saratov state agrarian university named after N.I. Vavilov The article presents the literature data on the results of the use of humic acids and substances derived from them as feed additives for pigs. Some ways of application of humic acids in feeding of pigs and data of the previous researches are described. At the end of the article the conclusion about the influence of humic acids on the productivity and safety of pigs is considered, the proposals for further more advanced scientific research are given.