Publication Date

1989

Description

The management of grazing sheep and cattle in south-eastern Australia is confounded by the diversity between years in the annual pattern of pasture growth. Currently, the way in which a farm manager budgets or apportions pasture to the grazing animals is markedly influenced by personal experience of pre­vious patterns of both pasture growth and animal response. This influence is usually heavily biased towards those enviromental conditions most recently experienced by the man­ager. The many deficiencies in this style of managing grazing systems have motivated scientists to investigate ways of supplementing this subjective « mental model » with a more quantitative technique. This can be achieved through the devel­opment of biologically-derived mathematical relationship, linking the various components of the system and combining these relationship in a way that emulates physiological processes and the flows of information in the « real » agricul­tural system.

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The Use of Models of Sheep and Cattle Production Systems to Aid On-Farm Decision Making in Southern Australia

The management of grazing sheep and cattle in south-eastern Australia is confounded by the diversity between years in the annual pattern of pasture growth. Currently, the way in which a farm manager budgets or apportions pasture to the grazing animals is markedly influenced by personal experience of pre­vious patterns of both pasture growth and animal response. This influence is usually heavily biased towards those enviromental conditions most recently experienced by the man­ager. The many deficiencies in this style of managing grazing systems have motivated scientists to investigate ways of supplementing this subjective « mental model » with a more quantitative technique. This can be achieved through the devel­opment of biologically-derived mathematical relationship, linking the various components of the system and combining these relationship in a way that emulates physiological processes and the flows of information in the « real » agricul­tural system.