Verteerbaarheid en voederwaarde van diverse kwaliteiten graskuil en van CCM bij biologische zeugen = Digestibility and nutritive value of several qualities of grass silage and of CCM in organic housed gestating sows

The chemical composition, digestibility and energy value of five qualities of grass silage and of CCM (Corn cob mix) were investigated in organic housed gestating sows. The dry matter content of the five grass silages varied between 21.3 and 24.9%. The energy value per kg dry matter varied between 0.78 and 0.95. Energy value per kg dry matter and daily dry matter intake were highest in grass silage with a yield of 2.2 ton dry matter per ha and lowest in grass silage with a yield of 5.0 ton dry matter per ha.