Perhaps feeding the 500,000 IU of vitamin D3 for
longer times before slaughter or feeding greater daily
dosages of vitamin D3 would have resulted in an improvement
in loin-chop tenderness. Feeding greater
dosages of vitamin D3 for less than 3 d before slaughter
may be most practical to avoid possible decreases in
feed intake because of the negative impact of dietary
vitamin D3 on rate of gain (Enright et al., 1998).