A time effect (P < 0.01)
was observed, with both groups experiencing a decrease
in DMI from d −21 to 0 and an increase from d 1 to
21 relative to calving; however, no CON versus RPN
treatment differences (P > 0.10) were observed. The
intake depression around calving can lead to NEB and
promote fat mobilization from adipose tissue (Doepel
et al., 2002).