2.4. Calculations and statistical analysis
The apparent to taltract digestibility coefficients of DM and organic matter (OM) were calculated based on amount of DM and OM excreted in feces, and relative to the amount of nutrient consumed using the following formula: 100_[(Total amount of DM or OM excreted in feces/Total amount of DM or OM ingested in feed)_100].
Growth performance traits and nutrient digestibility values were assessed by ANOVA.