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Copper and selenium supplementation of ewes grazing on pastures low in copper and selenium effect on reproduction and concentration of plasma copper and blood selenium during pregnancy



Copper and selenium supplementation of ewes grazing on pastures low in copper and selenium effect on reproduction and concentration of plasma copper and blood selenium during pregnancy



South African Journal of Animal Science 20(4): 246-249



Influence of copper and selenium supplementation in SA Mutton Merino ewes, kept on pastures with low copper and selenium concentrations, was investigated. Ewes which came into oestrus and conceived during March to April, were found to have concentrations of plasma copper of 60 to 80 .mu.g/dl. Inadequate copper intake by ewes during late pregnancy resulted in decreased concentrations of plasma copper, thereby leading to low concentrations of copper in the liver of young lambs. Selenium supplementation of ewes grazing pastures with a selenium content of 0.03-0.09 .mu.g Se/g DM, has been found to raise concentrations of blood selenium but had no effect on the concentrations of selenium in the liver and kidneys of young lambs.

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Accession: 007161468

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