Oregano Extract Added into the Diet of Dairy Heifers Changes Feeding Behavior and Concentrate Intake

Table 1

Chemical composition of the experimental feeds (values are expressed as % of DM).

Items^1	Concentrate	Silage	Hay	Pasture
NDF	30.04	45.99	75.52	61.14
CP	25.48	8.91	5.73	20.24
OM	90.75	96.47	93.67	89.56
IVDDM	88.19	69.37	56.13	71.95
IVDOM	90.33	70.22	55.33	72.56

= neutral detergent fiber; CP = crude protein; OM = organic matter; IVDDM = in vitro digestibility of dry matter; IVDOM = in vitro disappearance of organic matter g/100 g of DM.