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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Domesticated equines have fundamental differences in faecal microbial concentrations
Edwards, J.E. ; Berg, Paul van den; Burden, F. ; Doorn, D.A. van; Pellikaan, W.F. ; Dijkstra, J. ; Everts, H. ; Smidt, H. - \ 2017
- 2 p.
Domesticated equines have fundamental differences in faecal microbial concentrations
Edwards, J.E. ; Berg, Paul van den; Burden, F. ; Doorn, D.A. van; Pellikaan, W.F. ; Dijkstra, J. ; Everts, H. ; Smidt, H. - \ 2017
Nutritional studies have shown that horses and donkeys differ, with donkeys having a higher dry matter digestibility (DMD) of dietary material and a longer gut retention time of dietary particles1,2. As analysis of the equine gut microbiome to date has primarily focussed on horses3, however, it is unclear to what extent these differences are mediated by differences in the physiology and/or hindgut microbiota of these domesticated equines (Figure 1). A preliminary study was therefore conducted in order to assess the faecal concentrations of bacteria, archaea and anaerobic fungi in horses, donkeys and hybrids (mules & hinnies) .
Anaerobic fungi are a key unexplored taxa for optimizing lignocellulosic fibre utilisation in equines
Edwards, J.E. ; Doorn, D.A. van; Pellikaan, W.F. ; Dijkstra, J. ; Everts, H. ; Burden, F. ; Smidt, H. - \ 2016
The hindgut microbiota of equines enables them to utilize forage/grazing based diets which contain a substantial proportion of lignocellulosic fibres. These fibres are a structural barrier that gut bacteria need to overcome when accessing plant nutrients, as well as being a challenging and structurally complex substrate that can be utilized. The limited dietary energy available from these ‘natural’ diets however means that many equines are supplemented with energy-dense concentrate feeds in order to fulfil their dietary energy requirements. Use of energy-dense concentrate feeds however can change the equine hindgut microbiome, and lead to the development of gut-mediated diseases (i.e. fermentative acidosis, laminitis, colic and stomach ulcers). There is therefore a clear need to optimize the utilization of lignocellulosic fibres in the equine hindgut in order to minimize the need for dietary supplementation. The most effective of the fibre-degrading gut microbes, anaerobic fungi (phylum Neocallimastigomycota), are known to be a normal member of the equine gut microbiota. Despite this however, they have been largely overlooked in equine gut microbiology studies to date. Research being conducted within the EU funded EQUIANFUN project will therefore establish baseline knowledge of the phylogeny, community structure, physiology and nutritional impact of anaerobic fungi in the equine hindgut. The insights gained will inform the development of novel strategies to promote indigenous anaerobic fungal communities in the equine hindgut, enabling optimization of the use of dietary forage as an energy source in equids. Reduction of the use of energy–dense diets and applying targeted nutritional strategies for optimizing microbial health may counteract processes in the gastrointestinal tract that have been associated with disease. Anaerobic fungi therefore offer the potential to enable significant advances to be made in the optimisation of the nutrition, health and welfare of all domesticated equids.
Exposure to a novel feedstuff by goat dams during pregnancy and lactation versus pregnancy alone does not further improve post-weaning acceptance of this feedstuff by their kids
Hai, P.V. ; Schonewille, J.T. ; Tien, D.V. ; Everts, H. ; Hendriks, W.H. - \ 2016
Journal of the Science of Food and Agriculture 96 (2016)6. - ISSN 0022-5142 - p. 2215 - 2219.
Previous experiments demonstrated the existence of in utero learning in goats. However, in contrast to other animal species, in goats there is no information about the potential of flavour transmission from maternal feed to goat kids during lactation. The aim of the current study was to assess the role of post-natal exposure of Chromonaela odorata leaf meal (COLM) in relation to the preferences to this feedstuff by goat kids after weaning. It was hypothesised that exposure of COLM to the dams during both pregnancy and lactation versus pregnancy alone, additionally affects post-weaning intake of COLM by their offspring.
Consumption of COLM by the goat kids was similar during the first week post-weaning for all treatments. However, after 4 weeks the intake of COLM was at least 1.8 times greater when kids were exposed to COLM during pregnancy whereas it remained virtually unchanged when kids were exposed to COLM during lactation only. The increase in COLM consumption was in line with the observations on latency to eat and meal size.
Transmission of feeding behaviour from goat dams to offspring does not occur during lactation. However, the concept of in utero learning in goats was confirmed. © 2015 Society of Chemical Industry
A new Dutch Net Energy formula for feed and feedstuffs for growing and fattening pigs
Blok, M.C. ; Brandsma, Gerard ; Bosch, G. ; Gerrits, W.J.J. ; Jansman, A.J.M. ; Everts, H. - \ 2015
Wageningen UR Livestock Research (CVB-Documentation report 56) - 39
Veen verschijnt en verdwijnt : Grondwaterstromen en veenvorming
Makaske, A. ; Maas, G.J. ; Grootjans, A. ; Meijles, Erik ; Everts, H. ; Vries, Nico de - \ 2015
In: Landschapsbiografie van de Drentsche Aa / Spek, Theo, Elerie, Hans, Bakker, Jan P., Noordhoff, Ineke, Assen : Koninklijke Van Gorcum - ISBN 9789023252719 - p. 54 - 81.
Het geïntegreerde onderzoek van de laatste jaren laat zien dat het landschap van de Drentsche Aa zeer veranderlijk is. Wie de reconstructie van de tweede levensfase van het Drentsche Aa-gebied naast die uit de ijstijd legt, ziet dat ook direct. Er zijn aanwijzingen dat het landschap in het Atlanticum flink bebost is, alleen vlak langs beken ligt open veen. Later lijken de bomen het loodje te leggen. Ook de broekbossen die later zijn ontstaan hebben niet het eeuwige leven en ook de wouden uit de Middeleeuwen verdwijnen weer.
Mineralen-, sporenelementen- en vitaminenbehoeften van paarden
Top, A.M. van den; Blok, M.C. ; Everts, H. - \ 2012
Lelystad : CVB, Productschap Diervoeder (CVB-documentatierapport nr. 54) - 68
paarden - diervoeding - voeding - voedering - voedingsstoffen - mineralenvoeding - sporenelementen - vitaminen - horses - animal nutrition - nutrition - feeding - nutrients - mineral nutrition - trace elements - vitamins
In deze publicatie wordt beschreven hoe de in CVB verband tot stand gekomen voedernormen voor deze voedingsstoffen tot stand zijn gekomen. De publicatie is het resultaat van een deskstudie waarbij allereerst de Duitse DLG normen en de Amerikaanse NRC normen zijn geëvalueerd. Daar waar nodig is gericht gekeken of er nieuwe studies beschikbaar zijn, of is teruggegrepen op de oorspronkelijke publicaties. Voor de macromineralen (calcium, fosfor, magnesium, natrium, kalium, chloor) zijn de voedernormen gebaseerd op de zgn. factoriële methode. Voor sporenelementen en de vitamines bleek deze benadering niet mogelijk. Het rapport bevat een groot aantal tabellen waarin de voedernormen voor de genoemde nutriënten voor alle relevante fysiologische stadia.
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