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• W398245655 abstract "The weather data used was from a range of local sources covering the period 1970 to 1998. Annual rainfall averaged 815 mm. The soil description was based on soil tests from the focus farm. Animal and pasture inputs, management rules and cost and prices were chosen after discussions with the management committee of the focus farm. Supplementary feeding for maintenance was implemented in the paddock when condition score fell to <1.5. The total annual pasture production in the simulations averaged 12.4 tonnes dry matter/ha (range 6.7 to 17.6). The simulations were run in a factorial design. The factors were: (A) ewe fertility, 130%, 170% or 210% (conception rate at condition score 3); (B) stocking rate, 8, 12, 14, or 18 ewes/ha; (C) time of lambing, mid-July, midAugust or mid-September; (D) weaning age, 10, 12, 14, 16 weeks and (E) finishing system, sell at weaning, or hold on-farm for finishing at 24 weeks. These combinations gave a total of 288 simulations. The most productive treatment was July lambing, weaning at 16 weeks, finishing lambs on-farm with high fertility ewes at 14 /ha. This had an average production of 847 kg of lamb /ha (range 619 to 1235) but only exceeded the 1000 kg target in one year. It had an average gross margin of $602/ha. The most profitable treatment was July lambing, weaning at 16 weeks, finishing lambs on-farm with high fertility ewes at 12 /ha. This had an average of 785 kg of lamb/ha (range 580 to 1104), but only exceeded the 1000 kg target in one year. This treatment had an average gross margin of $623/ha. The results were then examined from the viewpoint of jointly maximising productivity (the top 25% of groups for liveweight of lamb produced per hectare), and profitability (the top 25% for gross margin per hectare), and considering risk aversion (excluding any of these groups which fell in the top 20% for standard deviation of gross margin per hectare). Thirty-two “best” groups were identified which met these criteria. The overall mean for these 32 best groups was 685 kg lamb liveweight per hectare and $504 gross margin per hectare. Table 1 gives the main effects, shown as the percentage within each cell that fell into this best classification." @default.
• W398245655 created "2016-06-24" @default.
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• W398245655 date "2002-01-01" @default.
• W398245655 modified "2023-09-26" @default.
• W398245655 title "LAMB PRODUCTION IN SOUTH WEST VICTORIA: IS 1000 KILOGRAMS PER HECTARE POSSIBLE?" @default.
• W398245655 hasPublicationYear "2002" @default.
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