All forages were cultivated at Röbäcksdalen Research Centre, The Swedish University of Agricultural Sciences, Umeå, Sweden (Lat 63°, 35°N) in 2003. Six-rowed barley (Hordeumvulgare L., var. vulgare) was cut with a disc mower conditioner (Kverneland TA339) at heading (July 17), early milk (July 30) and early dough stages (August 7), corresponding to maturity stages 59, 73 and 83, respectively, in the decimal code (Zadoks et al., 1974).