Nutrition, health, endocrinology, and growth physiology of cattle (newborn calves, weaned calves, prepubertal heifers, replacement heifers, veal calves, young bulls, steers, and cows). Milk-feeding and weaning; rumen wall characteristics and liver abscesses; quantification of hormones in blood and tissues; muscle physiology; adipose tissue metabolism; tissue accretion rates; slaughter, carcass, and meat quality aspects.