ConclusionsIn all silage types, which were followed in the current study, DM losses reached their maximal level between 3 and 6months of storage. In the third ensiling stage, which is referred to as ‘stable’ changes did occur and lactic acid peaked between1 and 3 months of storage whereas there was a constant accumulation of acetic acid. This might explain the improved aerobicstability of the silages with time. Dry matter and aNDF digestibility tended to decrease with time, however, this trend wasinconsistent among silage types.