Effects of organic forms of zinc on growth performance, tissue zinc distribution, and immune response of weanling pigs - Heugten, Eric; Spears, J. W.; Kegley, E. B.; Ward, J. D.; Qureshi, M. A. (Journal of Animal Science, 2003)

The effects of low-copper diets with or without supplemental molybdenum on specific immune responses of stressed cattle - Ward, J. D.; Spears, J. W. (Journal of Animal Science, 1999)

Effects of copper deficiency and copper deficiency coupled with high dietary iron or molybdenum on phagocytic cell function and response of calves to a respiratory disease challenge - Gengelbach, G. P.; Ward, J. D.; Spears, J. W.; Brown, T.T. (Journal of Animal Science, 1997)

Long-term effects of consumption of low-copper diets with or without supplemental molybdenum on copper status, performance, and carcass characteristics of cattle - Ward, J. D.; Spears, J. W. (Journal of Animal Science, 1997)

The effects of copper deficiency with or without high dietary iron or molybdenum on immune function of cattle - Ward, J. D.; Gengelbach, G. P.; Spears, J. W. (Journal of Animal Science, 1997)

Bioavailability of copper proteinate and copper carbonate relative to copper sulfate in cattle - Ward, JD; Spears, JW; Kegley, EB (JOURNAL OF DAIRY SCIENCE, 1996)
Keywords: bioavailability; copper; cattle

Differences in copper status and copper metabolism among Angus, Simmental, and Charolais cattle - Ward, J. D.; Spears, J. W.; Gengelbach, G. P. (Journal of Animal Science, 1995)

COMPARISON OF COPPER LYSINE AND COPPER-SULFATE AS COPPER SOURCES FOR RUMINANTS USING IN-VITRO METHODS - WARD, JD; SPEARS, JW (JOURNAL OF DAIRY SCIENCE, 1993)
Keywords: COPPER; LYSINE; RUMINANTS

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 - WARD, JD; SPEARS, JW; KEGLEY, EB (JOURNAL OF ANIMAL SCIENCE, 1993)
Keywords: COPPER; MOLYBDENUM; STEERS; IMMUNE RESPONSE; PERFORMANCE