Abstract Maximising dairy industry profitability involves maximising product returns for a specific set of costs or minimising costs for a certain level of output. A strategy currently utilised by the New Zealand dairy industry to optimise the value of exports is to incorporate imported lactose along with local milk to maximise the production of whole milk powder (WMP) while complying with the Codex Alimentarius (Codex) standards, in addition to increasing the exported product for every litre of milk. This study investigated the impact of different product portfolio strategies on lactose requirements for the Irish and New Zealand dairy industries for current and predicted 2020 milk output projections. A mass balance processing sector model that accounts for all inputs, outputs and losses involved in dairy processing was used to simulate the processing of milk into WMP, skim milk powder (SMP), cheese, butter and fluid milk of different proportions. All scenarios investigated projected an increase in production and revenue from 2012 to 2020. Higher cheese production reduced industry lactose demand through whey processing, while scenarios reliant on an increase in the proportion of WMP were associated with increased lactose deficits.

中文翻译：

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在不同的模拟奶制品加工组合下，新西兰和爱尔兰的乳制品产量和乳糖需求

摘要 最大限度地提高乳制品行业的盈利能力涉及在特定成本下最大化产品回报或在一定产量水平下最小化成本。新西兰乳制品行业目前采用的一种优化出口价值的策略是将进口乳糖与当地牛奶结合起来，以最大限度地提高全脂奶粉 (WMP) 的产量，同时遵守食品法典 (Codex) 标准，此外增加每升牛奶的出口产品。本研究调查了不同产品组合策略对爱尔兰和新西兰乳制品行业当前和预测的 2020 年牛奶产量预测的乳糖需求的影响。考虑所有投入的质量平衡加工部门模型，乳制品加工过程中的产出和损失被用来模拟将牛奶加工成不同比例的全脂奶粉、脱脂奶粉 (SMP)、奶酪、黄油和液态奶。所调查的所有情景都预测 2012 年至 2020 年的产量和收入会增加。奶酪产量的增加通过乳清加工降低了工业乳糖需求，而依赖全脂奶粉比例增加的情景与乳糖不足的增加有关。