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ONE OF T H E reasons for poor lambing performances in South Otago has been the light weight of two-tooth ewes at mating. From weighings done on a number of farms it appears that to achieve satisfactory two-tooth weights it is a prerequisite that a certain liveweight has to be achieved at the lamb stage, before the first winter. This target is well above the weight being achieved on most farms. As a means of helping farmers to grow their ewe replacements to the required weights it was decided in 1975 to apply the concepts of integrated grazing management and drenching for the control of internal parasites as promoted in the booklet Internal Parasites and Animal Production published by the New Zealand Society of Animal Production. The work at Wallaceville Research Station showed that after weaning, lambs grew faster on “safe” pasture (that is, pasture that has low levels of infective larvae of internal parasites) than they did on contaminated pastures. Safe pastures were shown to increase the response from drenching. In applying the safe pasture system to a farm situation in South Otago the overall objective was to have the lambs reared all year round on safe pastures or crops.

PROGRESS WITH "SAFE" PASTURE MANAGEMENT IN SOUTH OTAGO