Emissions of harmful gases are a long-term problem in livestock farming. In pig farming, these are mainly ammonia, carbon dioxide, methane and hydrogen sulfide. These gases are released mainly from pig feces and urine. They have a negative impact not only on the stable environment, but also on the performance and health of animals and on the health of staff working in the stable. Currently, various methodologies are being promoted that contribute to improving the stable environment, animal health and improving productivity. The largest part of the measures is taken by technological measures in the stables, a manure removal system, manure storage, manure acidification, and the use of air scrubbers. Interest in developing suitable and effective methods for reducing gas emissions in pig farming is growing. One such approach is nutritional regulation, which involves manipulating the feed ration of pigs in order to reduce the production of gas-forming compounds in the large intestine. This can be achieved through strategies such as limiting the intake of fermentable carbohydrates or increasing the intake of indigestible fiber. Overall, reducing gas emissions in pigs is a complex process. One approach that has shown promise is the use of feed additives. These additives may include the use of probiotics, prebiotics, enzymes, and medicinal plants.