Abstract
Artificially reared lambs were weaned from milk replacer (MR) at 21 days of age. Weaning weights and average daily gains were significantly (P < 0.01) depressed (7.6 and 18%, respectively) for lambs fed MR containing 12% rapeseed oil and 12% tallow compared with those fed a standard MR containing 12% coconut oil and 12% tallow. Lamb survival and MR dry matter consumption were similar for lambs fed the two diets. The results indicate that, under practical conditions, the use of rapeseed oil to provide half of the fat in lamb milk replacers causes a reduction in the performance of lambs artificially reared from birth. Key words: Artificial rearing, lambs, rapeseed oil
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