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 549699
Title Combining grazing and high mineral efficiency
Author(s) Haan, M.H.A. de; Noord, Tim van; Meerkerk, Barend; Philipsen, A.P.; Pol, A. van den
Source In: Sustainable meat and milk production from grasslands Wageningen : European Grassland Federation EGF (Grassland Science in Europe ) - ISBN 9781841706436 - p. 152 - 153.
Department(s) Livestock & Environment
Animal Nutrition
Publication type Contribution in proceedings
Publication year 2018
Abstract In the Netherlands many farmers assume pasture grazing for dairy cows to be less efficient in terms of mineral utilisation than indoor housing systems. The gross annual grass yield is assumed to be lower as well. Since 2016, Dutch dairy farmers are obliged to use the ANCA-tool (Annual Nutrient Cycling Assessment) to show the mineral efficiency of their farms. Farmers claim that pasture grazing leads to a worse ANCA performance than indoor housing. This claim puts pressure on pasture grazing. Therefore, a study was performed to analyse the effect of grazing on mineral efficiency. The analysis of a dataset containing 2,725 ANCA results of Dutch dairy farms showed that the average phosphorus and nitrogen excretion for farms that apply pasture grazing for their cows for less than 1000 hours cow-1 yr-1 were not significantly different from the indoor housing systems. On farms that apply grazing for more than that, the mineral excretion was higher. Measures were identified to improve the mineral efficiency, e.g. less young stock, feeding additional roughage and concentrate low in protein and phosphorus. This study shows that farms with restricted grazing can combine grazing and mineral efficiency.
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