When the finished feed is stored in the air, various components are oxidized, resulting in deterioration of the feed, with the release of a rich unpleasant odor, taste and the formation of compounds of decomposition products: aldehydes, hydroxy acids, ketones and other substances. A method for packaging combined feeds in a carbon dioxide environment is proposed, which involves long-term storage. When carbon dioxide interacts with water, carbonic acid is formed, which has a positive effect on the safety of combined feed and prevents its spoilage.