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 421224
Title The effect of allocation frequency in rotational grazing systems on the fatty acid profile in milk fat of dairy cows
Author(s) Vlaeminck, B.; Abrahamse, P.A.; Fievez, V.; Lourenco, M.; Dijkstra, J.; Tamminga, S.
Source In: 23th General Meeting of the European Grassland Federation, Kiel, Germany, 29 August - 02 September, 2010. - Duderstadt : Mecke Druck und Verlag - p. 102 - 102.
Event Duderstadt : Mecke Druck und Verlag 23th General Meeting of the European Grassland Federation, 2010-08-29/2010-09-02
Department(s) Animal Nutrition
Publication type Abstract in scientific journal or proceedings
Publication year 2010
Abstract Four Holstein cows were used to evaluate the effect of allocating cows every 4 day (d) to a new 0.5-ha plot of Lolium perenne L. on the profile of fatty acids (FA) in milk. The experiment was run during 2 rotations with 2 measuring periods of 4 d each. During the 4 d period, the proportion (g per 100 g FA) of 18:3n-3 and total FA content (mg per g DM) of grass decreased linearly. Similarly, milk FA composition was largely affected by day within the 4 d period. Proportions of t11-18:1 in milk fat increased on d 2 (4.52 g per 100 g FA) and decreased thereafter (3.77 g per 100 g FA on d 4). Proportions of c9t11-18:2 (2.36 and 1.83 g per 100 g FA), t11c15-18:2 (0.81 and 0.63 g per 100 g FA) and 18:3n-3 (0.92 and 0.88 g per 100 g FA) in milk followed the same pattern. Results from this study suggest short term variation in pasture quality during the 4 d affected milk FA composition, with a greater effect on biohydrogenation intermediates in milk fat compared with its major precursor, 18:3n-3.
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