The list of studies that looked into the effects of probiotic yeast in ruminants is long, but limited data is available on the effect of greenhouse gas reduction by these types of feed additives. This is stated in a review, compiled by researchers from the University of Delhi in India.
One of the challenges of a growing livestock sector is the contribution of livestock to the global greenhouse gas emission. Ruminants contribute to global climate change by emitting greenhouse gases (carbon dioxide, methane, nitrous oxide) either directly (e.g. from enteric fermentation) or indirectly (e.g. from feed production activities, deforestation to create new pasture etc.)
Source: Feed Additives, 16 sept 2016