The Transfer of Zinc from the Blood to the Rumen in Sheep

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Abstract
65zn was present in rumen digesta after a single dose of 65ZnCl2 was administered intravenously; the maximum level was reached approximately 3 days after the dose was given. After a single dose of 65ZnCl2 was administered intraruminally, 65Zn disappeared exponentially from the rumen, the time taken for the quantity present in the rumen to halve being 0.6-0.7 days. In 7 days following intravenous injections of 65ZnCl2, 1-2% of the injected dose was transferred to the rumen; transfer appeared to take place through the rumen epithelium as well as via saliva.