. The
present study investigated the effect of feed produced
by disc mill (D) and wedge-shaped disc mill (WSD),
as mash (M) or expandate (E) on apparent ileal absorption
(AIA) and apparent total digestibility (ATD)
of calcium, phosphorus, magnesium, zinc, manganese,
copper and iron, as well as on egg quality in laying
hens. A total of 192 hens (Lohmann Brown) aged 19
wk, were assigned using a randomized design with a
2 × 2 factorial arrangement.