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Zinc supplements and reproduction in grazing ewes
1School of Agriculture (Animal Science), University of Western Australia, 6009, Nedlands, Western Australia.
Abstract:
Six experiments were carried out in Western Australia to further investigate the effect of zinc supplementation on the reproductive performance of grazing Merino ewes. There was a small increase (7%,P=0.1) in the number of lambs produced by zinc-supplemented ewes in only one of the six experiments. Plasma zinc levels just prior to lambing were increased by zinc supplementation in two experiments. These results are discussed and compared to the previously published reproductive responses to zinc supplementation by grazing Merino ewes.

