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Based on research findings and observation, a dairy farm pasture management system is presented that could result in an increased per hectare milkfat production and profitability. In autumn there should be a change away from milk production towards pasture management and cow condition by using strategic drying off of cows relevant to the individual farm situation. This is probably the most important decision made each year. As winter pasture production is inadequate to meet cow maintenance and pregnancy requirements, cow condition should be at the level required for calving by the start of winter. The use of supplements conserved from summer’ surpluses to specifically ‘in-‘ crease cow condition in winter is of marginal economic value. They should be used primarily in autumn to produce extra pasture to be available for later use in winter. The matching of correct drying-off date, calving date and stocking rate to the pasture growth curve for the region, and an appreciation of correct feeding levels at the different stages of lactation are important. I N T R O D U C T I O N THE West Coast has 288 dairy farms. They extend from Karamea in the north to Whataroa in the south, a distance of 320 km by road. Based on data from the ‘Karamea and Westland Co-operative Dairy Companies for the 1978-9 and 1979-80 seasons the average West Coast dairy farm has 114 cows, and produces 15 700 kg milkfat that is, 138 kg/cow, or 190 kg/ha with replacements grazed off (estimated) . Accepting that higher milkfat prodution could be achieved by improving the genetic merit of herds, this paper will examine an alternative strategy for increasing production that is, the better utilization of the plant dry matter growing at different seasons by the stock of existing genetic merit. The necessary changes in management will be discussed in the context of the seasonal pattern of growth of what is considered an

CHANGES IN MANAGEMENT TO ACHIEVE HIGHER MILKFAT PRODUCTION ON THE WEST COAST