Parameters from in vitro gas production techniques could have potential as predictors of dry matter intake (DMI) and digestibility. Fermentation is usually carried out under conditions where nitrogen (N) is not limiting. Therefore where N supply is a constraint to intake and digestibility, prediction equations may be inaccurate. This study compared the use of N-free and N-rich media in an in vitro fermentation method and studied the relationships between in vitro and in vivo parameters using both media.
Romney, D.L.; Cadario, F.C.; Owen, E.; Murray, A.H. Comparison of parameters from the Theodorou gas production technique using nitrogen-free and nitrogen-rich media as predictors of DM intake and digestibility. (1997) [Proc. Brit. Soc. Animal Science Meeting, Reading University]