J. W. Spears

Effect of zinc source (zinc oxide vs zinc proteinate) and level on performance, carcass characteristics, and immune response of growing and finishing steers

J. W. Spears, E. B. Kegley · Journal of Animal Science · 2002 · 184 citations

Nutrition, Zn Level, Immunology +22

Ctr1 Is an Apical Copper Transporter in Mammalian Intestinal Epithelial Cells in Vivo That Is Controlled at the Level of Protein Stability

Yasuhiro Nose, L. Kent Wood, Byung‐Eun Kim et al. · Journal of Biological Chemistry · 2010 · 149 citations · Full text

Gastroenterology, Digestive Tract, Cellular Physiology +24

Effect of dietary trace mineral concentration and source (inorganic vs. chelated) on performance, mineral status, and fecal mineral excretion in pigs from weaning through finishing12

B. L. Creech, J. W. Spears, W. L. Flowers et al. · Journal of Animal Science · 2004 · 129 citations

Effect of copper level and source (copper lysine vs copper sulfate) on copper status, performance, and immune response in growing steers fed diets with or without supplemental molybdenum and sulfur

J.D. Ward, J. W. Spears, E. B. Kegley · Journal of Animal Science · 1993 · 116 citations

Effect of Zinc Source and Dietary Level on Zinc Metabolism in Holstein Calves

Cody Wright, J. W. Spears · Journal of Dairy Science · 2004 · 93 citations · Full text