Chemical composition of galega mixtures silages
Lithuanian University of Agriculture, Studentų 11, LT-4324, Akademija, Kaunas distr.,Lithuania; e-mail: ligita.balezentiene@ lzuu.lt
A b s t r a c t . According to the near-infrared reflectance spectroscopy data, the chemical composition of fodder galega (Galega orientalis Lam.) is more valuable forage than traditional fodder plants such as the red clover and timothy at budding-early flowering stage. Due to the high concentration of total protein (231 g kg-1) and some amino acids (asp, glu, phenylala), galega fresh mass could be used as a substitute for the soybean cake for 1.4–2.9 kg equivalent amounts. The mean of asp, glu and phenylala content in galega DM constitutes 68.22–56.37 % of their concentration in soybean cake. The high total protein concentration of fodder galega which was determined indicated that this crop could be used for increasing the protein content of livestock rations and successfully replace soybean cake, which is imported and expensive.For supplying livestock with succulent forage during the year and for producing highquality silage, galega mixtures with grasses containing many water-soluble carbohydrates could be ensiled. Possibilities of ensiling mixtures of early flowering stage fodder galega (1:1) with orchardgrass (Dactylis glomerata L.), timothy (Phleum pratense L.), wheat grass (Elytrigia repens L.), milk stage maize and sugar beet leaves were studied at Research Station and Training Farm of Lithuanian University of Agriculture. The addition of 0.3% FPC to galega-maize silage had no significant influence on DM (225 and 214 g kg-1), mineral element concentration and pH value (4.7 and 4.4) as compared to galega-maize silage without preservatives. The results of ensiling indicate that the quality of pure galega and galega-wheat grass silage was poor quality due to an unbalanced ratio of protein and water-soluble carbohydrates. Fodder galega appears suitable for ensiling with a grass component (orchardgrass, timothy or maize) which accumulated not less than 30% DM.