Eficacia de estrategias nutricionales para la disminución de emisiones de gas metano por bovinos, en el periodo 2012-2022: una revisión de la literatura científica

Livestock is one of the most important activities, however, it contributes to global warming, becoming one of the major sources of methane emissions. It should be taken into account that diet manipulation is one of the efficient alternatives that allows modifying ruminal fermentation, improving nutrient assimilation and, therefore, reducing methane. Therefore, in this systematic review, the efficacy of nutritional strategies for the reduction of methane gas emissions in cattle was determined by compiling research journals, undergraduate and doctoral theses published in scientific databases in the last 10 years. The databases consulted were Scopus, Dialnet, Redalyc, Science Direct and thesis repositories in Spanish, English and Portuguese. As a result, it was obtained that the variation of methane emissions is related to the amount of feed ingested and the quality, defined by digestibility and fiber content. It is concluded that sunflower oil, linseed oil, starch oil and Leucaena leucocephala present an efficiency of 21.5%, 38%, 12.8% and 61% respectively in reducing enteric CH4 emission.