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Tuesday, May 24 • 09:00 - 10:00
Impacts of injectable trace minerals on measures of humoral immunity in beef cattle

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Trace minerals, namely copper, selenium, and zinc, have been known to impact immune competence in cattle.  Impacts are associated with innate immune defenses, such as the role of zinc on skin and mucosal barriers, the effects of selenium on phagocytic cell function, and the role of copper and zinc on humoral immune reactions.  Deficiency complications are often associated with calves reared in grazing systems because these essential elements are commonly deficient in grazed forages, particularly warm season forages.  To protect against deficiency, supplementation strategies are required.  In most all production environments, grazing cattle rely upon salt-based, free-choice supplements to supply adequate supplementation and protect against deficiency. This management approach is complicated by several factors among which are the impacts of trace mineral antagonists in grazed forage and the reliance upon predictable, uniform intake of free-choice mineral supplements.  Numerous options are available to assist in the management of trace mineral nutrition of grazing cattle.  This presentation will focus on recent research aimed at the effects of injectable trace minerals on measures of trace mineral status and humoral immune responses of weaned calves


Dr John Arthington

Professor John Arthington is a graduate of the Animal Sciences Departments of Purdue and Kansas State Universities and has been a member of the University of Florida, Animal Sciences faculty since 1998.  Currently, he serves as Professor and Director of the University of Florida... Read More →

Tuesday May 24, 2016 09:00 - 10:00 ACST
Room L3 Adelaide Convention Centre