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 550815
Title Jaarrond gemiddeld fosforgehalte in melk : Jaarrond monitoren van het P-gehalte in melk van de Nederlandse melkveestapel en de mogelijkheid het P-gehalte in melk te schatten uit andere melkbestanddelen
Author(s) Koning, Lisanne; Šebek, Léon; Dijkstra, Jan
Source Wageningen : Wageningen Livestock Research (Rapport / Wageningen Livestock Research 1166) - 26
Department(s) Animal Nutrition
Animal Nutrition
Publication type Research report
Publication year 2019
Abstract The Dutch dairy sector has difficulty staying below the European maximum of phosphate excretion by cattle. Phosphorus (P) excretionis calculated by subtracting P in milk and P used for growth from P intake via feed. P in milk accounts for approximately 95% of the total P used by cows, thus an accurate estimation for P in milk is necessary for a reliable calculation of P excretion. In this research the average P-content in Dutch dairy milk was studied. Next, models were investigated to estimate P in milk basedon milk components that could be analysed using mid-infrared (MIR). The annual average P-content in Dutch dairy milk was 101.2 mg P/100 g raw milk, which is 4.3% higher than the fixed value of P in milkused to calculate P excretion, which is 97 mg P/100 g milk. This means a decrease in annual phosphate excretion by the Dutch dairy sector of 1.0 to 1.4 million kg. The P content in milk can be estimated using a model with calcium and zinc.
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