Hypocuprosis in Cattle in Central Queensland, Australia

Murphy, Ger; Dimmock, C. K.; Kennedy, T. P.; O’Bryan, M. S.; Plasto, A. W.; Powell, E. E.; Twist, J. O.; Wright, G. S.; Gartner, R. J. W.

doi:10.1007/978-3-642-68269-8_47

Cited by 2 publications

(1 citation statement)

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“…Trace element deficiencies found or suspected of limiting livestock productivity in northern Australia include Cu deficiency over extensive areas of Queensland and the Northern Territory (Gartner et al 1980;Murphy et al 1981;Wesley-Smith and Schlink 1990), Co deficiency along the coastal areas of Queensland (Nicol et al 1983;Rosbrook et al 1992) and in restricted areas of the Northern Tablelands of New South Wales (Duncan et al 1986), Se deficiency in the central and coastal areas of Queensland (K. McGuigan pers. comm.)…”

Section: Trace Elementsmentioning

confidence: 99%

Mineral disorders in grazing livestock and the usefulness of soil and plant analysis in the assessment of these disorders

Judson¹,

McFarlane²

1998

Aust. J. Exp. Agric.

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Summary. This paper briefly describes common mineral disorders affecting livestock at pasture in Australia, their mineral requirements, factors affecting these requirements and laboratory methods of assessing the mineral status of the animal. The benefits and limitations of mineral analyses of soil and pasture samples for the purposes of identifying and preventing mineral disorders of the grazing animal are discussed. Mineral analyses of pasture are of particular value in the identification of the causes of copper and magnesium deficiency and of acute calcium deficiency in livestock. Selective grazing, adventitious ingestion of soil and variability in the mineral reserves of the animal, however, limit the usefulness of pasture analyses to identify a mineral disorder in the grazing animal.

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Section: Trace Elementsmentioning

confidence: 99%

Mineral disorders in grazing livestock and the usefulness of soil and plant analysis in the assessment of these disorders

Judson¹,

McFarlane²

1998

Aust. J. Exp. Agric.

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Oxidized copper wire particles for copper therapy in sheep

Judson¹,

Brown²,

Gray³

et al. 1982

Aust. J. Agric. Res.

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Ninety Merino weaner sheep were assigned to one of six groups on the basis of liveweight and liver copper concentrations. Sheep in four groups each received one oral dose of oxidized copper wire particles, viz. 2.5, 5, 10 or 20 g per animal. Sheep in another group each received a subcutaneous injection of 12 mg copper as diethylamino cupro-oxyquinoline sulfonate and another group of sheep did not receive any copper supplement. Liver copper concentrations responded positively to copper oxide load. The 2.5 g dose of copper oxide wire was more efficacious than the commercial injectable product in raising copper status, but the higher doses of oxide raised liver copper concentrations to values similar to those recorded in cases of copper poisoning. Copper concentrations in blood plasma, muscle and kidney were not altered by the copper load. No clinical signs, nor biochemical or histological evidence of acute copper toxicity, were found. Liver copper values fell in all sheep from 10 weeks after copper therapy until the end of the trial at 50 weeks post-therapy. Over this period of 40 weeks, the rate of mobilization of liver copper was linear and was positively related to the initial concentration of copper in the liver. A significant proportion of the oxidized copper wire dosed to sheep was recovered in the forestomachs and abomasa of selected sheep 4 weeks after dosing. No evidence of abomasal damage due to particles could be established. It is concluded that oral dosing of oxidized copper wire is a safe and effective method of copper supplementation to sheep.

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Hypocuprosis in Cattle in Central Queensland, Australia

Cited by 2 publications

References 1 publication

Mineral disorders in grazing livestock and the usefulness of soil and plant analysis in the assessment of these disorders

Mineral disorders in grazing livestock and the usefulness of soil and plant analysis in the assessment of these disorders

Oxidized copper wire particles for copper therapy in sheep

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