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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    Records 1 - 11 / 11

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    Inrichting, verlichting, ammoniak en stof bij volièreonderzoek (2e proef) = Layout, illumination, ammonia and dust in an aviary study
    Emous, R.A. van; Ellen, H.H. ; Fiks, T.G.C.M. - \ 2004
    Lelystad : Animal Sciences Group (PraktijkRapport / Animal Sciences Group, Prakijkonderzoek : Pluimvee ) - 49
    kippen - pluimveehokken - volières - layout - belichting - ammoniak - stof - arbeidskosten - economische haalbaarheid - fowls - poultry housing - aviaries - layout - illumination - ammonia - dust - labour costs - economic viability
    Ter vervanging van de legbatterij voor leghennen worden in de Europese richtlijn (1999/74) van 19 juli 1999 twee andere houderijsystemen genoemd. Het ene is een nieuw type houderijsysteem, de verrijkte kooi. Het andere wordt gevormd door scharrel- en volièresystemen, samen de alternatieve systemen genoemd. Hoewel deze systemen al enige tijd in de praktijk gebruikt worden, zijn er een aantal knelpunten, die toepassing op grotere schaal tot nu toe tegenhouden. Deze knelpunten liggen op het gebied van arbeid, stof, ammoniakemissie en economie. Door een aantal veranderingen in regelgeving is de noodzaak tot onderzoek aan deze systemen sterk toegenomen. Bij de opzet van het onderzoek is getracht op twee veranderingen in regelgeving in te spelen: Op de inrichting van het systeem (EU en KAT) en op de regels voor snavelbehandelingen (EU en Ingrepenbesluit). Daarnaast wordt aandacht besteed aan ammoniakemissie en arbeid. In de zomer van 2000 is een proef opgestart met leghennen op twee nieuwe volièresystemen gevolgd door een herhaling van de proef die in het voorjaar van 2002 aanving. In dit rapport wordt verslag gedaan van de ervaringen van de tweede proef waarbij regelmatig wordt teruggekeken naar de eerste proef.
    Design methodology for the robotic milking barn : modelling, simulation, validation and optimization
    Halachmi, I. - \ 1999
    Agricultural University. Promotor(en): L. Speelman; A.A. Dijkhuizen, co-promotor(en): J.H.M. Metz; E. Maltz. - S.l. : S.n. - ISBN 9789058081308 - 140
    melkstandinrichtingen - huisvesting, dieren - melkmachines - robots - ontwerp - layout - methodologie - wiskundige modellen - simulatiemodellen - optimalisatie - milking parlours - animal housing - milking machines - robots - design - layout - methodology - mathematical models - simulation models - optimization

    The traditional barn design is a milking parlour oriented. To integrate a milking robot the barn should be redesigned according to the robotic milking concept. The entire system (barn design, feeding and cow-traffic routines, management practices) should encourage 'voluntary milking', i.e., it should ensure sufficiently frequent visits of the cow to the robot.

    An optimal layout should balance animal welfare, on the one hand, and the economic need for high facility utilisation, on the other hand. These two conflicting forces (which are to be optimised) should be incorporated into management practices and physical layout. However, the actual capacity performance) of each facility (such as robot, forage lane, concentrate feeder) in the robotic milking barn (RMB) depends on cow access (animal behaviour), barn design, farm routine and management practices. There is also a wide diversity among farmers and local conditions, therefore the optimal layout may differ among farms. Numerous important factors are evaluated as a system when RMB is designed, but it is usually difficult to quantify how consideration of these factors may affect production or income. Taken together these factors and their variations mean that we are dealing with a quite complex system.

    The optimal RMB layout (the solution) has to be matched to individual farm conditions, adjustable for any farmer or site, but the design methodology should be universally applicable. Therefore, the objective of this study was to develop a design methodology for finding the optimal layout for a robotic milking barn before the barn is built, and to implement the methodology into a practical design tool, embedded in a user-friendly software application, ready for use in the barn during a consulting session.

    Four experiments were conducted, two under research conditions and two in commercial farms. They aimed to explore the stochastic nature of the facility utilisation in a robotic milking barn, and to validate the model under a variety of scenarios.

    A closed queuing network model for a robotic milking barn was developed, and a behaviour-based simulation (BBS) model, which enables a designer to optimise facility allocation in a barn, was developed and validated. Having been validated, the simulation model becomes a practical design tool for optimising a barn layout. The design methodology was finalised by integrating the queuing network model, the BBS model, a regression metamodel, full factorial design, and optimisation algorithms. By using the proposed design methodology, a model of a future barn can be created, which will help to make effective decisions. It is possible to predict how the barn will respond to changes in design or operation, and to compare what will happen under a variety of scenarios. Among other things, it is now possible:

    • to predict facility utilisation and cow queue length;
    • to calculate the optimal facility allocation: the numbers of robots, cubicles, forage lane positions, water troughs and concentrate feeders that are needed;
    • to advise the individual farmer on the choice of robot location, cow traffic routine, required floor space in front of each facility (waiting area), feeding routine, separation area, automatic cleaning; and
    • to gain assurance before building that the proposed design would actually meet the specified requirements.

    In general, this research has reached a stage at which a behaviour-based simulation is adjustable for any farmer or site. The onus is now on the industry to implement this proposed design methodology on a daily basis.

    Ammonia emission from houses for growing pigs as affected by pen design, indoor climate and behaviour
    Aarnink, A.J.A. - \ 1997
    Agricultural University. Promotor(en): L. Speelman; M.W.A. Verstegen; J.H.M. Metz. - Wageningen : IMAG-DLO - ISBN 9789054856627 - 175
    varkens - kraamstallen - varkensstallen - afmesten - architectuur - ontwerp - layout - grondplannen - diergedrag - ventilatie - luchtverontreiniging - ammoniak - emissie - vervluchtiging - ? - binnenklimaat - pigs - farrowing houses - pig housing - finishing - architecture - design - layout - floor plans - animal behaviour - heating - ventilation - air pollution - ammonia - emission - volatilization - indoor climate

    The ammonia volatilization in pig houses should be reduced to protect the environment and to improve the air quality inside the house. The objective of this study was to examine the effects of various housing factors and animal behaviour on the ammonia volatilization in houses for rearing and fattening pigs. The study was intended to yield ways that pig farmers could reduce the emission of ammonia by combining effective and economic housing measures. A marked increase was found in the ammonia emission during the growing period of the pigs. Ammonia emission was generally higher during the summer than the winter season and was positively related to the urine-fouled floor area and the frequency of urination. Reducing the slatted floor and slurry pit area and using slatted floors of smoother material and with more open space than concrete slatted floors, lowered the ammonia emission. The air quality was improved by using a ventilation system with a low air inlet in the floor of the feeding passage and a low outlet just above the slatted floor, instead of a high diffuse inlet and a high outlet. The ventilation system did not affect the total emission of ammonia. The ammonia emission could be reasonably well predicted with a dynamic numerical model at the low and moderate levels of emission, but was poorly predicted at high levels of emission. It is concluded that by combining simple housing measures it is possible to reduce appreciably ammonia emission from houses for growing pigs at relatively low costs. Furthermore, animal welfare and health and the working conditions of the stockman can be improved by these measures.

    Ph.D. thesis, Institute of Agricultural and Environmental Engineering (IMAG-DLO), department of Livestock Engineering, P.O. Box 43, 6700 AA Wageningen, the Wageningen Institute of Animal Sciences (WIAS) and the Department of Agricultural Engineering and Physics of the Agricultural University Wageningen.

    This study was financially supported by FOMA (Financieringsoverleg Mest- en Ammoniakonderzoek). Their contributions are gratefully acknowledged.

    Programma van eisen voor de inrichting van volierestallen voor leghennen = Husbandry requirements for the equipment in aviaries for laying hens
    Lokhorst, C. ; Smits, A.C. ; Niekerk, T. van - \ 1994
    Wageningen : IMAG-DLO (Rapport / Instituut voor Milieu- en Agritechnik 94-11) - ISBN 9789054060802 - 52
    architectuur - ontwerp - grondplannen - hennen - layout - pluimveehokken - stallen - architecture - design - floor plans - hens - layout - poultry housing - stalls
    Kunststofkas met tuiconstructie : ontwerp, uitvoering en toetsing van een prototype = Plastic greenhouse supported by guy ropes : design, construction and testing of a prototype
    Waaijenberg, D. ; Frenay, J.W. - \ 1993
    Wageningen : IMAG-DLO (Rapport / IMAG-DLO 93-24) - ISBN 9789054060581 - 51
    architectuur - bouwconstructie - bouwmaterialen - constructie - ontwerp - grondplannen - folie - kassen - layout - materialen - kunststoffen - rubber - constructieonderdelen - structuren - architecture - building construction - building materials - construction - design - floor plans - foil - greenhouses - layout - materials - plastics - rubber - structural components - structures
    Modern, antimodern en postmodern ontwerpen
    Meeus, J. - \ 1984
    Plan 15 (1984)2. - ISSN 0006-8357 - p. 22 - 29.
    architectuur - ontwerp - grondplannen - layout - open ruimten - steden - wedstrijden - gelderland - prijzen (competitie) - veluwe - architecture - design - floor plans - layout - open spaces - towns - competitions - gelderland - prizes - veluwe
    Bespreking van inzendingen voor de prijsvraag 'Kerkplein e.o.' in Arnhem (1983). Het uitgangspunt hierbij was tweeslachtig. Van de ontwerpen wordt nagegaan in hoeverre zij zijn onder te brengen in de categorieen modern, antimodern of postmodern bouwen
    Centraal wonen Hilversumse Meent
    Backus, H.C.S. ; Kesler, B.E.Th.A. - \ 1984
    's-Gravenhage : Ministerie van Volkshuisvesting, Ruimtelijke Ordening en Milieubeheer - 54
    architectuur - communes - coöperatieve woningbouw - ontwerp - woningen - gezinsstructuur - grondplannen - huishoudens - huisvesting - layout - nederland - noord-holland - architecture - communes - cooperative housing - design - dwellings - family structure - floor plans - households - housing - layout - netherlands - noord-holland
    Inventarisatie rapport van huisvestingsystemen voor mestvarkens
    Meijerink, J. - \ 1981
    Wageningen : IMAG - 35
    huisvesting, dieren - dierenwelzijn - architectuur - ontwerp - grondplannen - vloeren - roostervloeren - layout - varkensstallen - stallen - animal housing - animal welfare - architecture - design - floor plans - floors - grid floors - layout - pig housing - stalls
    Luchtlekkage van gekoelde voertuigen
    Meffert, H.F.T. - \ 1966
    Wageningen : [s.n.] (Bulletin / Instituut voor bewaring en verwerking van tuinbouwproducten no. 39) - 2
    voertuigen - layout - interieurarchitectuur - accommodatie - spoorwegen - kabelbanen - voedingsmiddelen - voedselbewaring - koelen - koudeopwekking - invriezen - koeling - vehicles - layout - interior design - accommodation - railways - cableways - foods - food preservation - cooling - refrigeration - freezing - chilling
    Standaardisatie en montagebouw in de landbouw
    Rijkenbarg, G.J.H. - \ 1964
    Wageningen : [s.n.] (Publikatie / Instituut voor landbouwbedrijfsgebouwen no. 21) - 31
    landbouwbedrijfsgebouwen - bouwconstructie - locatiekeuze - grondvoorbereiding - landbouw - architectuur - huisvesting - woningen - systeembouw - ontwerp - layout - grondplannen - farm buildings - building construction - site selection - site preparation - agriculture - architecture - housing - dwellings - prefabrication - design - layout - floor plans
    Beproeving Klippan trekkercabine
    Anonymous, - \ 1958
    Wageningen : [s.n.] (Bulletin / Instituut voor landbouwtechniek en rationalisatie no. 73) - 4
    trucks - trekkers - voertuigen - layout - interieurarchitectuur - accommodatie - trucks - tractors - vehicles - layout - interior design - accommodation
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