Occurrence and correction of copper deficiency of sheep in north-Western Queensland

Abstract

The occurrence and correction of copper deficiency in Merino sheep on an affected property in north-western Queensland were studied in three trials in successive years. The effects of copper supplementation on growth of weaner sheep, wool production, wool quality and reproductive performance were examined. From these studies recommended treatments to prevent copper deficiency in sheep in this locality are (a) establish a good initial liver copper concentration by three treatments at fortnightly or monthly intervals and then maintain these reserves by 3-monthly treatments; and (b) treat lambs at marking and thereafter at about 3-monthly intervals.