Copper deficiency is not diagnosed nearly as frequently as copper toxicity, but it may occur in regions where soils and forages are low in copper or have elevated levels of molybednum. In adult sheep, signs of copper deficiency are usually sub-clinical. Severe deficiencies may result in “steely” or “stringy” wool that lacks crimp and tensile strength.
Young animals are more susceptible to copper deficiency, as milk is a poor source of copper. Affected lambs may show signs of “swayback” or have difficulty standing or walking (known as ataxia). Oral administration of copper sulfate or other chelated forms of copper is the usual treatment for copper deficiency.