The present disclosure relates to
ruminant feed additive composition comprising a combination of
urea, biuret and N-containing by-products of the biuret production out of
urea, and optionally one or more
nitrate compounds, to inhibit
methane production emanating from the activities of the
digestive tract of
ruminant animals, the composition comprising one or more other
methane inhibition compounds, chosen out of the group consisting of halogenated
methane analogues in the form of halogenated aliphatic compounds with 1 or 2 carbons (also called C1-C2 hydrocarbons) and
halocarbon compounds, nitro compounds,
plant secondary metabolites (PSM), seaweed,
algae,
lichen, and / or fungi, dietary lipid and / or fatty acids, The present disclosure further relates to the use of such a
ruminant feed additive composition to inhibit
methane emissions from digestive activities of ruminant animals and additionally mitigate the amount of
nitrous oxide (N2O) and
ammonia (NH4) in the
urine of the
ruminant animal. The present disclosure also relates to a method for inhibiting the production of methane emanating from the digestive activities of ruminant animals, wherein the method comprises the step of orally administering to the
ruminant animal an effective amount of such a ruminant
feed additive composition.