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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    Evaluation of titanium dioxide and chromic oxide as digestibility markers in ponies fed alfalfa hay in relation to marker dosing frequency
    Schaafstra, F.J.W.C. ; Doorn, D.A. van; Schonewille, J.T. ; Boom, R. Van Den; Verschuur, M. ; Blok, M.C. ; Hendriks, W.H. - \ 2019
    Animal 13 (2019)4. - ISSN 1751-7311 - p. 702 - 708.
    apparent digestibility - CrO - equines - TiO - total faeces collection

    In equines, Cr2O3 is widely accepted as an indigestible marker, but there are health concerns regarding the carcinogenic properties of Cr2O3. Recently, TiO2 has been suggested to be an alternative digestibility marker in equines. However, a comparison between Cr2O3 and TiO2 has not been made in equines. Six Welsh pony geldings (initial BW: 254±3 kg; 7 years of age) fed chopped alfalfa hay were used to evaluate the use of TiO2 (Ti) and Cr2O3 (Cr) as markers for calculating apparent digestibility and to investigate the effect of frequency of marker administration on the measurement of digestibility values. Diets contained 4.65 kg dry matter (DM) chopped alfalfa hay supplemented with minerals, vitamins, TiO2 (3.3 g Ti/day) and Cr2O3 (3.2 g Cr/day). Ponies were dosed with either 3.3 g Ti and 3.2 g Cr once daily (DF1) or with 1.65 g Ti and 1.60 g Cr twice daily (DF2). After adaptation to the diets and procedures for 14 days, voluntary voided faeces were collected quantitatively over 7 days and analysed for moisture, ash, Ti and Cr. Apparent total tract DM digestibility (DMD) and organic matter digestibility (OMD) were calculated using the total faecal collection (TFC) and marker method (Ti and Cr). The overall mean cumulative faecal recovery of Cr and Ti (as % of intake) were 102.0% and 96.6%, respectively. Mean daily faecal recoveries of Cr as well as of Ti were not different (P=0.323; P=0.808, respectively) between treatments. Overall daily faecal recovery of Cr differed (P=0.019) from 100% when the marker was dosed once daily, whereas overall daily faecal recovery was similar to 100% for both administration frequencies when Ti was used as a marker. For both markers, the coefficient of variation of the mean faecal marker recovery between horses was lower when the markers were administrated twice per day. Across treatments, cumulative DMD and OMD estimated with Ti were similar (P=0.345; P=0.418, respectively) compared with those values determined by TFC method. When Cr was used, the calculated cumulative DMD tended (P=0.097) to be greater compared with those estimated with TFC, and cumulative OMD values were overestimated (P=0.013). Orally supplemented Ti recovery in the faeces of ponies fed chopped alfalfa hay with Ti administered once or twice daily was close to 100%, making it the preferred marker for digestibility trials in equines.

    Naar een uitvoeringsplan voor de proeftuin Kwaliteitsimpuls Landschap Noordoost Twente : Onderzoeksrapport
    Verschuur, G.W. ; Stortelder, A.H.F. ; Schrijver, R.A.M. ; Padt, F.J.G. ; Kloen, H. ; Guldemond, J.A. ; Top, I.M. van den; Corporaal, A. ; Berg, A.E. van den - \ 2002
    Utrecht : CLM Onderzoek en Advies BV (CLM 539b-2002) - 71
    landschapsbescherming - duurzaamheid (sustainability) - alternatieve landbouw - landgebruik - landschap - beschermingsgebieden - twente - overijssel - landscape conservation - sustainability - alternative farming - land use - landscape - conservation areas - twente - overijssel
    Wanneer is een aannemer aansprakelijk?
    Verschuur, H.R. ; Braam, C.R. - \ 1998
    Agrabeton 8 (1998)5. - ISSN 0167-3246 - p. 14 - 15.
    bouwnijverheid - bouwconstructie - civiele techniek - gebouwen - passiva - burgerlijk recht - building industry - building construction - civil engineering - buildings - liabilities - civil law
    De mogelijkheden van een agrarische ondernemer bij een geschil met een aannemer op een rijtje
    Digestion versus composting of straw and hay: effects on composition of biomass residues.
    Oomen, G.J.M. ; Verschuur, C.M. ; Schiere, J.B. - \ 1995
    Netherlands Journal of Agricultural Science 43 (1995). - ISSN 0028-2928 - p. 313 - 319.
    The effect of two decomposition processes, digestion and composting, was compared on the quality of the final residue from two substrates: hay and straw. The digestion was done by using dwarf goats on digestion crates and the composting process was simulated in buckets. Composting was allowed to continue to the same level of organic matter loss as achieved in a digestibility trial. The results indicated that the pattern of biomass decomposition, as measured by the fibre analysis in the Goering and Van Soest method, was similar between both processes and substrates. Absolute amounts of acid detergent lignin (ADL) did not change significantly throughout both decomposition processes, but the quantity of other fibre components decreased. Chemically, the ADL fraction made up a large part of the humus in the soil and though the results were variable, they suggested that the initial ADL content of a substrate indicates its humus building capacity. Concerning the nitrogen fractions, however, there were larger differences between the decomposition processes and substrates. Digestion left less nitrogen in the organic matter than composting, and the composting of straw even resulted in a net increase in nitrogen content.
    Aspecten van het grote champignonteeltbedrijf in Zwitserland : verslag van een studiereis naar Zwitserland van 18 t/m 21 augustus 1970
    Arkenbout, J. ; Dullemen, E. van; Verschuur, A.F.C. - \ 1970
    Wageningen : Instituut voor Tuinbouwtechniek (Intern verslag / Instituut voor Tuinbouwtechniek 22) - 18
    Total energy in de glastuinbouw : is een eigen elektriciteitsvoorziening voordelig?
    Verschuur, A.F.C. - \ 1970
    Wageningen : [s.n.] (Publikatie / Instituut voor tuinbouwtechniek no. 62) - 16
    boerderij uitrusting - landbouwwerktuigen - agrarische bedrijfsvoering - tuinbouw - teelt onder bescherming - farm equipment - farm machinery - farm management - horticulture - protected cultivation
    De kosten van kunstlicht voor plantenbestraling
    Vissia, R. ; Verschuur, A.F.C. - \ 1968
    Wageningen : [s.n.] (Publikatie / Instituut voor tuinbouwtechniek, Wageningen no. 32) - 60
    teelt - cultuurmethoden - tuinbouw - kunstlicht - verlichting - agrarische bedrijfsvoering - nederland - cultivation - cultural methods - horticulture - artificial light - lighting - farm management - netherlands
    Vergelijking van de kosten bij het stoken met aardgas en olie 3500 sec. Redwood I
    Vissia, R. ; Neefjes, P.J. ; Verschuur, A.F.C. - \ 1967
    Wageningen : [s.n.] (Publikatie / Instituut voor tuinbouwtechniek no. 19) - 34
    biogas - kosten - agrarische bedrijfsvoering - brandstoffen - verwarmingsapparatuur - tuinbouw - koolwaterstoffen - vloeistoffen (liquids) - methaan - mineraaloliën - aardgas - nederland - prijsvorming - prijzen - teelt onder bescherming - technologie - ventilatoren - biogas - costs - farm management - fuels - heaters - horticulture - hydrocarbons - liquids - methane - mineral oils - natural gas - netherlands - price formation - prices - protected cultivation - technology - ventilators
    Verkolingsproeven met enkele Oost-Indische houtsoorten
    Verschuur, R. - \ 1931
    Wageningen : Veenman (Mededeelingen van de Landbouwhoogeschool dl. 35, verhandeling 3)
    tropisch hout - gecontroleerd branden - nederlands indië - tropical timbers - controlled burning - netherlands east indies
    De verandering van de rotatie en van het geleidend vermogen van enkele suikers in waterige oplossing met en zonder boorzuur
    Verschuur, R. - \ 1927
    Wageningen : Veenman (Mededelingen van de Landbouwhogeschool te Wageningen dl. 31, verh. 1) - 118
    monosacchariden - polysacchariden - elektrochemie - monosaccharides - polysaccharides - electrochemistry
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