A major limitation to providing appropriate mineral nutrients to sheep is a lack of understanding factors affecting individual animal supplement consumption. Bowman and Sowell (1997) reported that some animals refuse supplements altogether,
Abbreviations: ADF, acid detergent fiber; ADG, average daily gain; BW, body weight; CP, crude protein; CV, coefficient of variation; DM, dry matter; DMI, dry matter intake; DMD, dry matter digestibility; FO, daily fecal output; NDF, neutral detergent fiber. ∗ Corresponding author. Tel.: +1 406 994 5563; fax: +1 406 994 5589. E-mail address: jbowman@montana.edu (J.G.P. Bowman).