CONV: conventional diet, high protein content, MHP: medium-high protein diet, MLP: medium-low protein diet, and LP: low protein diet. Data are the means of 6 pens (9–10 pigs/pen), which were the experimental unit for testing the effect of dietary treatments.
b
SEM: pooled standard error of the mean.
c
Data are the means of 117 and 116 pigs for gilts and barrows, respectively. The individual pig was the experimental unit for testing the effect of sex.