“…The total water intake was F I G U R E 1 Average lactic acid concentration (•) in g per kg dry matter and pH (x) in baled silage and haylage of different dry-matter concentrations (data from Müller, 2005;, Müller et al, 2008Müller, 2009a;Müller, 2009b;Müller, 2012;Müller et al, 2013;Müller et al, 2016)[Colour figure can be viewed at wileyonlinelibrary.com] MÜLLER | 817 higher on the silage diet, but water output (in faeces and urine) did not differ between the diets (Muhonen, Lindberg, et al, 2009), meaning that evaporation losses must have been higher on the silage diet, probably due to a larger heat increment of feeding (Blaxter, 1989). The reason for the higher digestibility of silage compared to haylage and hay may be explained by loss of highly digestible leaves in the field due to mechanical handling of dry crops during haylage and hay production, as this may decrease overall digestibility of the forage (Honig, 1980;McGechan, 1988). Another explanation may be the previously known loss of DM during ensiling without loss of energy.…”