RESEARCHES CONCERNING THE USE OF FEED INGREDIENTS TO REDUCE GREENHOUSE GAS EMISSIONS IN DAIRY COWS FARMS.

From the multitude of solutions proposed to reduce greenhouse gas emissions, the strategies based on feed solutions are the most effective in the ruminant breeding sector. In most cases, the benefit is twofold, namely limiting the greenhouse effect and improving animal production. In practice, a reduction in gas emissions in the future is possible provided that farmers are aware of the need to invest in order to ensure this food adaptation to the new recommendations of researchers in the field. One way to reduce methane emissions is to increase the proportion of concentrated feed in the ration, which has been found to reduce CH4 emissions per unit of ingested dry matter and liter of milk, as production remains the same or increases. Experiments performed on lactating cows indicated linear decreases in CH4 emissions with an increase in the proportion of concentrated feed in the ration. Concentrated feeds also generally provide more digestible nutrients compared to bulky feeds, which could increase animal productivity. As a result, the decrease in fiber content and the faster passage of leguminous through the digestive tract of cows decrease the production of CH4. [ABSTRACT FROM AUTHOR]