In order to study the effect of different levels of
fermented soy protein source on apparent total tract nutrient
digestibility, all pigs in all pens were fed their originally
assigned diets mixed with chromic oxide (0.25%) from d 7
to 14 of phase I and fecal samples were collected from d 11
to 14 and pooled. The fecal samples were freshly collected
from 5-6 pigs randomly from each pen each day to ensure
no microbial modification of the nutrient contents. The
fecal samples were dried in a forced-air drying oven at
60°C for 72 h and ground with a 1mm mesh Wiley mill for
chemical analysis.