Fig. 1From: Insects as alternative feed for ruminants: comparison of protein evaluation methodsNitrogen degradation (g/g) of the 5 incubation substrates using 3 different methods: regression (reg ND), in vitro (in vitro ND) and in situ (in situ ND). Vertical bars represent the standard error of the mean (SEM). Different letters (a-f) indicate significant differences (P < 0.05) for the interaction method × substrateBack to article page