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- W2040579932 abstract "Abstract This paper describes a model of grassland farming. By matching feed availability with animal requirements, taking account of a number of land use alternatives, the model maximises overall farm profitability. The year is divided into ten 24-day grazing periods and one 125-day indoor period. Grass production in each grazing period depends on the level of nitrogen application. Nitrogen is applied to ensure the grass supply is adequate for animal requirements in each grazing period. In addition, grass can be conserved as silage for winter feeding with meals. The cutting area is closed for two 24-day periods prior to cutting, with up to three cuts being taken per year. Time is allowed for re-growth before the silage area is subsequently grazed. Examples are used to demonstrate the use of the model as applied to a 40·5 ha dairy farm faced with a restrictive quota on milk production and a number of alternative land uses. The examples demonstrate how the optimum level of intensity of the dairying enterprise changes with varying assumptions concerning the alternatives and how a quota restriction affects differences in profitability due to husbandry practices. This model could also be used to examine the impact on farming systems of a variety of policy measures in addition to that of milk quotas." @default.
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- W2040579932 date "1987-01-01" @default.
- W2040579932 modified "2023-09-27" @default.
- W2040579932 title "A linear programming model of grassland management" @default.
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- W2040579932 doi "https://doi.org/10.1016/0308-521x(87)90098-9" @default.
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