At 12 months of age the animals were weighed. Ani-
mals of similar weight were paired and alotted to treat-
ment groups. During the experimental period of 136
days prior to slaughter, they received 3 kg concentrate
and 15 kg corn silage per day. To the concentrate of the
vit. E supplemented group (SUP) 675 mg vit. E per kg
feed was added (2025 mg vit. E animalÿ1 dayÿ1) by use
of a premix (Rovimix E-50 SD, Roche Nederland b.v.).
The control group (CON) received a similar diet, except
that no extra vit E was added to the concentrate.
Duplicate samples were taken from the feed for analysis
of vit. E (Anonymous, 1997). Liveweight was deter-
mined before delivery for slaughter at 17 months of age.