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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    Rice Straw and Wheat Straw - Potential feedstocks for the Biobased Economy
    Bakker, R.R.C. ; Elbersen, H.W. ; Poppens, R.P. ; Lesschen, J.P. - \ 2013
    Utrecht : NL Agency - 31
    rijststro - tarwestro - stro - reststromen - beschikbaarheid - kosten - logistiek - duurzaamheid (sustainability) - biomassa - biobased economy - rice straw - wheat straw - straw - residual streams - availability - costs - logistics - sustainability - biomass - biobased economy
    Dit rapport zet de mogelijkheden voor het gebruik van rijststro en tarwestro in de biobased economy op een rij. Er is gekeken naar beschikbaarheid, kosten (vooral van inzameling en logistiek) en duurzaamheidsaspecten.
    Effect of fungal treatments of fibrous agricultural by-products on chemical composition and in vitro rumen fermentation and methane production
    Tuyen, D.V. ; Phuong, H.N. ; Cone, J.W. ; Baars, J.J.P. ; Sonnenberg, A.S.M. ; Hendriks, W.H. - \ 2013
    Bioresource Technology 129 (2013). - ISSN 0960-8524 - p. 256 - 263.
    white-rot fungi - wheat-straw - rice straw - invitro digestibility - pleurotus-ostreatus - digestion kinetics - sugarcane bagasse - detergent fiber - animal feed - lignin
    Maize stover, rice straw, oil palm fronds and sugarcane bagasse were treated with the white-rot fungi Ceriporiopsis subvermispora, Lentinula edodes, Pleurotus eryngii, or Pleurotus ostreatus at 24 °C for 0–6 weeks. The fungi increased total gas production from oil palm fronds by 68–132%, but none of the fungi improved the in vitro rumen fermentability of maize stover. C. subvermispora and L. edodes increased total gas production of sugarcane bagasse by 65–71%, but P. eryngii and P. ostreatus decreased it by 22–50%. There was a linear relationship (P <0.05) between the proportion of lignin in the original substrate and the increase in in vitro gas production observed for C. subvermispora and L. edodes treatments (R2 = 0.92 and 0.96, respectively). It is concluded that C. subvermispora and L. edodes have a particularly high potential to improve the nutritive value of highly lignified ruminant feeds.
    Broeikasgasbalans van stroom uit rijststro
    Poppens, R.P. ; Bakker, R.R.C. - \ 2012
    Wageningen : Food & Biobased Research Wageningen UR (Biobased Economy infosheet ) - 1 p.
    biogas - biomass - bioenergy - biobased economy - rice straw - renewable energy
    Greenhouse gas emission analysis of an Egyptian rice straw biomass-to-energy chain
    Poppens, R.P. ; Bakker, R. - \ 2012
    Wageningen : Wageningen UR - Food & Biobased Research - 15
    bio-energie - rijststro - biomassa - biomassa productie - bolletjes - egypte - export - broeikasgassen - emissie - biobased economy - bioenergy - rice straw - biomass - biomass production - pellets - egypt - exports - greenhouse gases - emission - biobased economy
    A common practice in Egypt has been the burning of rice straw, as a measure to prepare agricultural land for follow-up crops. This practice has caused significant greenhouse gas emissions, in addition to aerial pollution. By using straw residue for the production of pellets and shipping these pellets to Europe for co-firing in electricity plants, significant overall emission reductions could be achieved. This study was conducted in the framework of project “Technical and economic feasibility of environmentally safe rice straw disposal and utilization methods for Egypt”. Based on a potential business set-up with three pelletizers, divided over three rice producing regions in Egypt’s Nile Delta, greenhouse gas emissions were quantified for the principal operations in the biomass-to-energy chain. Also expected emission reductions were calculated, in comparison with the use of fossil fuels.
    Rumen degradation of oil palm fronds is improved through pre-digestion with white rot fungi but not through supplementation with yeast or enzymes
    Hassim, H.A. ; Lourenco, M. ; Goh, Y.M. ; Baars, J.J.P. ; Fievez, V. - \ 2012
    Canadian Journal of Animal Science 92 (2012)1. - ISSN 0008-3984 - p. 79 - 87.
    vitro fermentation characteristics - in-vitro - rice straw - chemical-composition - fibrolytic enzymes - wheat-straw - metabolism - degradability - digestibility - culture
    Rumen fermentation kinetics of oil palm fronds (OPF) supplemented or not with enzymes (Hemicell® or Allzyme SSF®) or yeasts (Levucell®SC or Yea-Sacc®) were studied through an in vitro gas production test (96 h) (exp. 1). In exp. 2, enzymes were supplemented to OPF pre-treated during 3 or 9 wk with either one of five white rot fungi strains. Yeasts and enzymes were tested both in active and inactive forms, which revealed the most appropriate set-up to distinguish between the rate of supplements as direct contributors to the fermentation substrate vs. stimulators of the fermentation of the basal substrate. In exp 1, addition of active and inactive Yea-Sacc® increased the apparently rumen degradable carbohydrates (ARDC) by 11%, whereas enzymes did not affect rumen degradability of non-inoculated OPF. Neither yeast nor enzymes influenced the rate of gas production of non-inoculated OPF, except for active Hemicell® at the low dose. In exp. 2, inoculation of OPF with Ceriporiopsis subvermispora for 3 wk and Lentinula edodes for 9 wk increased ARDC, but additional enzyme supplementation did not further improve ARDC or the rate of gas production.
    Alternative concepts and technologies for beneficial utilisation of rice straw
    Bakker, R.R.C. ; Keijsers, E.R.P. ; Beek, H. v.d. - \ 2010
    rijststro - egypte - bio-energie - compost - bouwmaterialen - conferenties - biobased economy - rice straw - egypt - bioenergy - composts - building materials - conferences - biobased economy
    Poster met onderzoeksinformatie over de ontwikkeling van nuttig gebruik van rijststro in Egypte.
    Sustainable building materials from rice straw
    Keijsers, Edwin - \ 2009
    rice straw - building materials - wallboard - cement - sustainability - straw bales - chaff - biobased economy - bioplastics
    Industrial development : biofuels for transportation
    Bakker, Rob - \ 2009
    rice straw - lignocellulose - transport - diesel oil - biobased economy - biofuels - bioethanol - future
    Rice straw for electricity and heat production
    Bakker, Rob - \ 2009
    rice straw - bioenergy - electricity - heat production - techniques - biobased economy
    Effect of enzyme extracts isolated from white-rot fungi on chemical composition and in vitro digestibility of wheat straw
    Rodrigues, M.A.M. ; Pinto, P. ; Bezerra, R.M.F. ; Dias, A.A. ; Guedes, C.M. ; Cone, J.W. - \ 2008
    Animal Feed Science and Technology 141 (2008)3-4. - ISSN 0377-8401 - p. 326 - 338.
    volatile fatty-acids - rumen microorganisms - manganese peroxidase - trametes-versicolor - lignin degradation - phenolic-acids - rice straw - fermentation - fiber - polysaccharides
    A series of in vitro experiments were completed to evaluate the potential of enzyme extracts, obtained from the white-rot fungi Trametes versicolor (TV1, TV2), Bjerkandera adusta (BA) and Fomes fomentarius (FF), to increase degradation of cell wall components of wheat straw. The studies were conducted as a completely randomized design and analysed using one-way ANOVA. Enzyme activities of the extracts, previously obtained from a liquid culture medium, were characterized in terms of laccase and peroxidase for ligninolytic activity. Carboxymethyl cellulase (CMCase) and avicell digesting cellulase (Avicelase) were used for cellulolytic enzyme assays. Wheat straw samples were incubated with enzyme extracts in a citrate buffer (pH 5.0) in a forced air oven at 25 °C for 6 days. In vitro NDF digestibility (IVNDFD), and the rate and extent of NDF fermentation, without and after incubation with the white-rot enzyme extracts, were determined using a gravimetric microbiological method and a gas production technique, respectively. Results from cell wall chemical composition showed that TV2 and BA enzyme extracts decreased NDF concentration (P
    Assessment of the nutritive value of cereal and legume straws based on chemical composition and in vitro digestibility
    Lopez, S. ; Davies, D. ; Dhanoa, M.S. ; Dijkstra, J. ; France, J. - \ 2005
    Journal of the Science of Food and Agriculture 85 (2005)9. - ISSN 0022-5142 - p. 1550 - 1557.
    rumen degradation - gas-production - sacco degradability - ruminant feeds - barley straw - wheat-straw - rice straw - varieties - sheep - fractions
    The nutritive value of 17 straws was determined on the basis of their chemical composition, in vitro dry matter (DM) digestibility and rumen fermentation kinetics (from gas production curves measured in vitro). Five roughages were from the cereal species Avena sativa (oat), Hordeum vulgare (barley), Secale cereale (rye), Triticum aestivum (wheat) and Zea mays (maize stover). The other 12 samples were legume straws, two samples from each of the species Cicer arietinum (chickpea), Lens culinaris (lentil) and Phaseolus vulgaris (bean) and one sample from each of the species Lathyrus sativus (chickling vetch), Lupinus albus (white lupin), Pisum sativum (field pea), Vicia articulata (one-flowered vetch), Vicia ervilia (bitter vetch) and Vicia sativa (common vetch). All samples were collected after harvesting from different farms located in León (northwestern Spain). Based on their chemical composition, digestibility and gas production characteristics, species could be clustered into two groups with a significant linkage distance, one for cereal straws that merged at a level of similarity of 80% and the other for legume straws with a degree of similarity of 50%. Species varied widely and significant differences (P <0.05) were observed between the two groups of straws. Legume straws showed higher crude protein (74 ± 6.1 vs 29 ± 2.2 g kg-1 DM) and lower fibre (584 ± 18.1 vs 793 ± 27.5 g neutral detergent fibre kg-1 DM) contents than cereal straws and, consequently, DM digestibility coefficients (0.670 vs 0.609; standard error of difference 0.0054) and metabolisable energy values (7.4 ± 0.15 vs 5.7 ± 0.24 MJ kg-1 DM) were significantly greater in legume than in cereal straws. Although there were noticeable differences among species within each botanical family, legume straws showed better nutritional quality than cereal straws, indicating that they could be considered promising and interesting sources of roughage for incorporation into ruminant diets
    Characterisation of structure-dependent functional properties of lignin with infrared spectroscopy
    Boeriu, C.G. ; Bravo, D. ; Gosselink, R.J.A. ; Dam, J.E.G. van - \ 2004
    Industrial Crops and Products 20 (2004)2. - ISSN 0926-6690 - p. 205 - 218.
    antioxidant activity - rice straw - spectrometry
    Fourier-transformed infrared spectroscopy (FT-IR) was evaluated as an analytical technique for the estimation of the chemical composition and functional properties of lignin. A sample set containing various non-wood, hardwood and softwood lignins isolated by different processing technologies was used. The lignin samples were characterised by both conventional chemical analysis and non-destructive methods, such as diffuse reflectance FT-IR. Principal component analysis (PCA) based on the IR-fingerprint spectral region allowed classification of lignins according to origin and processing conditions. The antioxidative properties of each lignin sample in both aqueous and micellar systems were determined. All lignin samples showed radical scavenging activity, with sisal and abaca lignin being the most effective radical scavengers. The radical scavenging efficiency of the most efficient lignin was about 20% of that of BHT and tocopherol (based on weight), compounds that are commonly used in food and cosmetic industries. Multivariate analysis was applied to correlate chemical composition and antioxidative properties of lignins with the FT-IR spectral data. Partial least squares (PLS) models were able to predict the major components' concentrations and radical scavenging activity at the 99% confidence level presenting r(2) values higher than 0.80 in most cases. (C) 2004 Elsevier B.V. All rights reserved.
    Verbeteren calciumbenutting tijdens de droogstand
    Meijer, R. ; Venninga, G. ; Kalis, K. - \ 1997
    Praktijkonderzoek Rundvee, Schapen en Paarden. Praktijkonderzoek 10 (1997)6. - ISSN 1386-8470 - p. 14 - 17.
    diervoedering - melkvee - melkveehouderij - stro - rijststro - kuilvoer - voer - droge stof - voedingswaarde - calcium - voedergrassen - animal feeding - dairy cattle - dairy farming - straw - rice straw - silage - feeds - dry matter - nutritive value - calcium - fodder grasses
    In het algemeen wordt veel aandacht geschonken aan voeding van droogstaande koeien. Toch komt op meerdere melkveebedrijven nog steeds vrij veel melkziekte voor. Melkziekte treedt op rond het afkalven en wordt veroorzaakt door een te laag calciumgehalte in het bloed. Een laag magnesiumgehalte in het bloed vergroot het risico op melkziekte. De beschikbaarheid van calcium in het bloed is afhankelijk van de calcium opname met het voer en de benutting ervan in de darm.
    Tarwekorrels en strobrok in vleesvarkensvoeders
    Scholten, R. ; Brok, G. den; Binnendijk, G. - \ 1996
    Praktijkonderzoek varkenshouderij 10 (1996)6. - ISSN 1382-0346 - p. 18 - 19.
    dierhouderij - ontwikkeling - voer - groei - massa - voedingswaarde - korrelvoer - varkens - productiviteit - rentabiliteit - rijststro - stro - triticum aestivum - gewicht - tarwe - animal husbandry - development - feeds - growth - mass - nutritive value - pelleted feeds - pigs - productivity - profitability - rice straw - straw - triticum aestivum - weight - wheat
    Het Proefstation voor de Varkenshouderij heeft in samenwerking met Coöperatie ABC te Lochem een onderzoek uitgevoerd naar het effect van structuurwaarde (deeltjesgrootte, ruwe celstof) in mengvoer op de technische resultaten, slachtkwaliteit en gezondheid van vleesvarkens.
    Supplémentation de la paille de riz avec le tourteau de cotondans I'alimentation des vaches laitiOres
    Kané, M. - \ 1996
    Wageningen [etc.] : AB-DLO [etc.] - 50
    rundvee - voedergewassen - rijststro - sahel - stro - cattle - fodder crops - rice straw - sahel - straw
    Utilisation de la fane de niebe (Vigna unguiculata) et du tourteau de coton comme supplements de la paille de riz (Oryza sativa) par des taurillons
    Kaasschieter, G.A. ; Attema, J. ; Coulibaly, Y. - \ 1996
    Wageningen : AB-DLO [etc.] - 40
    diervoedering - stieren (bulls) - bijproducten - samenstelling - pletmolens - fabaceae - oliekoeken - rijststro - sahel - stro - jonge dieren - animal feeding - bulls - byproducts - composition - crushing mills - fabaceae - oilseed cakes - rice straw - sahel - straw - young animals
    Verhalten und Koerperschaeden von Jungsauen in Gruppenhaltung bei simultaner oder sequentieller Futterzuteilung mit oder ohne Strohangebot
    Krause, M. - \ 1995
    Wageningen : IMAG-DLO - ISBN 9789054061106 - 124
    diergedrag - rijststro - zeugen - stro - tuierhuisvesting - voedersystemen - animal behaviour - rice straw - sows - straw - tethered housing - feeding systems
    Cattle, straw and system control : a study of straw feeding systems
    Schiere, J.B. - \ 1995
    Agricultural University. Promotor(en): D. Zwart; J.A. Renkema. - S.l. : Schiere - ISBN 9789054853893 - 216
    stro - rijststro - strobehandeling - rundvee - landbouwbedrijven - bedrijfssystemen - straw - rice straw - straw treatment - cattle - farms - farming systems

    Straw is an important animal feed in many farming systems of the world. It can be fed in different ways, and for a variety of objectives. An analysis of the role of straw is therefore undertaken to explain the usefulness of straw feeding methods in different systems. Automatically this leads to the question about the role of straw in the drive and shape of farming systems. A review of backgrounds and approaches of Farming Systems Research (FSR) is given to serve as a background for the discussions. After that, this thesis proposes a classification of farming systems that reflects a form of system evolution with different degrees of system control. The classification also provides a framework that tentatively explains the usefulness of straw feeding methods over a large range of systems. Based on feeding trials and a review of literature, a set of feeding values and animal responses are obtained that help to understand the economics of some specific straw feeding methods: urea treatment of straw and/or supplementation with better feeds. It is shown that the feeding of urea treated straw is best feasible in conditions with a) medium levels of individual animal output in terms of milk and meat, b) limited access to better quality feeds and c) access to required inputs such as urea. The calculations are tested from a nutritional angle as well as from an approach that distinguishes between high and low input agriculture, here called closed and open systems. The results are used for thought experiments that explore the possibilities to adjust feed and animals in different combinations for maximum system output. This shows that mutual adjustment of resources and (sub)system production objectives is necessary for maximum system output. This conclusion agrees with concepts from thermodynamics, information theory and ecology, branches of science that also help to explain the drive and shape of systems.

    Handbook for straw feeding systems : principles and applications with emphasis on Indian livestock production
    Kiran Singh, ; Schiere, J.B. - \ 1995
    New Delhi [etc.] : Indo-Dutch Project on Bioconversion of Crop Residues - 428
    handboeken - stro - rijststro - voedingsrantsoenen - ruwvoer (roughage) - india - diervoeding - diervoedering - dierlijke productie - voedersystemen - handbooks - straw - rice straw - feed rations - roughage - india - animal nutrition - animal feeding - animal production - feeding systems
    Supplementation de la paille de mil (Pennisetum thyphoides) avec le tourteau de coton : effets sur l'ingestion, la digestibilite et la selection
    Kaasschieter, G.A. ; Coulibaly, Y. ; Kane, M. - \ 1994
    Wageningen etc. : AB-DLO [etc.] (Rapports PSS no. 4) - 22
    bijproducten - samenstelling - pletmolens - spijsvertering - oliekoeken - rijststro - sahel - stro - byproducts - composition - crushing mills - digestion - oilseed cakes - rice straw - sahel - straw
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