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Published online by Cambridge University Press: 27 February 2018
The prevention or treatment of trace element deficiencies in grazing livestock can be both expensive and inconvenient. As an alternative to the customary parenteral administration of copper (Cu) or the use of cobalt (Co) bullets, we have investigated the feasibility of treating animals by supplementation of their drinking water with Cu or Co, using the Rowett Water Proportioning Device (Patent No. 16784/78).