Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 409238
Title GrazeVision: A versatile grazing decision support model
Author(s) Zom, R.L.G.; Holshof, G.
Source In: 16th EGF Symposium, Grassland Science in Europe, Raumberg-Gumpenstein, Austria, 28 - 31 August, 2011. - Irdning, Austria : Agricultural Research and Education Centre Raumberg-Gumpenstein - ISBN 9783902559654 - p. 226 - 228.
Event Irdning, Austria : Agricultural Research and Education Centre Raumberg-Gumpenstein - ISBN 9783902559654 Grassland Farmig and Land Management Systems in Mountainous Regions, 2011-08-28/2011-08-31
Department(s) Livestock Research
LR - Backoffice
Publication type Contribution in proceedings
Publication year 2011
Abstract Grazing management, i.e. matching the grass supply with feed demands, is complex. It involves many interventions such as varying the length of grazing rotation, nitrogen fertilization, supplementation, access time, stocking rate, paddock size, removal of surplus grass and topping. It is difficult to foresee the effects on animal and grassland production when two or more interventions are executed simultaneously. The GrazeVision decision support model is developed for farmers to simulate the effects of one or more management interventions at the same time. The inputs for GrazeVision are: nitrogen application rate, soil, season, target residual herbage mass, herd demography, paddock size, access time and supplementary feeding. The outputs are: predicted initial herbage mass, herbage intake, substitution rate of supplemental feeding, paddock residence time, herbage available for cutting, rejected herbage mass (tall patches), herbage loss due to fouling with dung, trampling and poaching, herbage utilization, total milk production and changes in milk production during paddock residence time. Farm profitability is calculated after allocation of input prices and product returns. The GrazeVision grazing decision model is incorporated in the DairyWise whole-farm decision model and available as a stand-alone internet application www.koeenwij.nl.
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