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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    Effect of structural animal health planning on antimicrobial use and animal health variables in conventional dairy farming in the Netherlands
    Speksnijder, David C. ; Graveland, Haitske ; Eijck, Ineke A.J.M. ; Schepers, René W.M. ; Heederik, Dick J.J. ; Verheij, Theo J.M. ; Wagenaar, Jaap A. - \ 2017
    Journal of Dairy Science 100 (2017)6. - ISSN 0022-0302 - p. 4903 - 4913.
    Antimicrobial use - Continuous improvement - Facilitated animal health planning - Implementation

    Widespread veterinary use of antimicrobials might contribute to the increasing burden of antimicrobial resistance. Despite many successful efforts to reduce veterinary antimicrobial use in the Netherlands, antimicrobial use on a substantial number of farms has remained relatively high over the past few years. Farm-specific solutions are required to further lower antimicrobial use on these farms. Reducing the burden of animal diseases at the farm level by means of a structured approach to animal health planning could be promising. This intervention study aimed to evaluate the main effects of an animal health planning program developed by an advisory team consisting of a dairy farmer, his veterinarian, and his feed adviser under the guidance of a professional facilitator. During an initial farm visit, the advisory team developed a farm-specific animal health planning program with support from the facilitator. After 1 yr, the effects of this program on animal health, production parameters, and antimicrobial use were evaluated and compared with control farms that did not have a facilitated animal health planning program. Antimicrobial use on intervention farms was significantly reduced between the start and the end of the study period; however, no significant differences in the rate of reduction between the intervention and control groups could be observed (-19% and -14%, respectively). Reduced antimicrobial use did not result in negative effects on animal health and production parameters during the study period in both groups. On intervention farms, a significant positive relationship was found between the percentage of completed action points at farm level and the percentage reduction in antimicrobial use. The level of compliance with action points and the quality of collaboration between farmer and advisers were positively associated with the accomplishment of corresponding objectives. However, the total number of objectives was negatively associated with the level of compliance with action points and tended to be negatively associated with the percentage reduction in antimicrobial use at farm level. Gradually reducing antimicrobial use without adverse effects on animal health and productivity is possible by adjusting management practices in a team effort. Fostering good collaboration among farmer, veterinarian, and feed adviser and focusing on a limited number of objectives have positive effects on the outcomes of the animal health planning program and antimicrobial use.

    Via diergezondheidsmanagement naar minimaliseren van antibioticumgebruik werkt! : ervaringen van biologische varkenshouders
    Bokma-Bakker, M.H. ; Eijck, I. - \ 2014
    Wageningen UR, Livestock Research
    varkenshouderij - antibiotica - reductie - biologische landbouw - diergezondheid - dierziektepreventie - dierenwelzijn - huisvesting, dieren - kraamstallen - pig farming - antibiotics - reduction - organic farming - animal health - animal disease prevention - animal welfare - animal housing - farrowing houses
    Diverse biologische varkenshouders hebben geëxperimenteerd met een ‘nieuwe’ aanpak van het diergezondheidsmanagement en verdere vermindering van antibioticagebruik op het bedrijf. De resultaten zijn veelbelovend. In deze brochure willen we een aantal opvallende ervaringen van varkenshouders met u delen.
    Weetjes en praktische tips over de aanpak van Brachyspira pilosicoli bij biologische varkens
    Bokma-Bakker, M.H. ; Kluivers-Poodt, M. ; Peet-Schwering, C.M.C. van der; Eijck, I.A.J.M. ; Kolpa, B. ; Kleijer, G. ; Willems, E.M. ; Leejen, J. - \ 2014
    varkenshouderij - brachyspira pilosicoli - varkensziekten - biologische landbouw - diergezondheid - dierziektepreventie - stress - dierenwelzijn - varkensvoeding - varkensstallen - varkens - dierlijke productie - pig farming - brachyspira pilosicoli - swine diseases - organic farming - animal health - animal disease prevention - stress - animal welfare - pig feeding - pig housing - pigs - animal production
    In deze flyer wordt een aantal weetjes en praktische tips over de aanpak van Brachyspira pilosicoli bij biologische varkens samengevat. De kennis is zowel afkomstig uit onderzoek als uit praktijkervaringen.
    Via diergezondheidsmanagement naar minimalisering van antibioticagebruik : weetjes en praktische tips voor de biologische varkenshouder
    Bokma-Bakker, M.H. ; Vermeer, H.M. ; Houwers, H.W.J. ; Eijck, I. ; Leeijen, J. - \ 2014
    Livestock Research Wageningen UR - 50
    varkenshouderij - antibiotica - diergezondheid - dierziektepreventie - dierenwelzijn - dosering - biologische landbouw - varkens - dierlijke productie - pig farming - antibiotics - animal health - animal disease prevention - animal welfare - dosage - organic farming - pigs - animal production
    In deze waaier staan weetjes en praktische tips om uw diergezondheidsmanagement op uw biologische varkensbedrijf te versterken en daarmee het gebruik van antibiotica te minimaliseren. De weetjes en tips zijn o.a. gebaseerd op de ervaringen die biologische varkenshouders hebben opgedaan in een onderzoek naar minimaliseren van antibioticagebruik.
    Comparative analysis of key socio-economic and environmental impacts of smallholder and plantation based jatropha biofuel production systems in Tanzania
    Eijck, J. van; Romijn, H. ; Smeets, E.M.W. ; Bailis, R. ; Rooijakkers, M. ; Hooijkaas, N. ; Verweij, P. ; Faaij, A. - \ 2014
    Biomass and Bioenergy 61 (2014). - ISSN 0961-9534 - p. 25 - 45.
    agricultural landscapes - mathematical-theory - communication - certification - biodiversity - bioenergy - energy - trade - india
    Two jatropha business models are compared on seven key sustainability areas of concern, which are operationalized into various quantitative and qualitative indicators. The assessment is based on two Tanzanian real-life cases, a wide range of primary and secondary sources are used. Results indicate that both the decentralized smallholder model and the centralized plantation model can lead to positive socio-economic and environmental impacts, but substantial differences are also apparent. The smallholder model scores better on land rights, GHG balance and biodiversity and it reaches more people, whereas the plantation model creates more employment and higher (local prosperity) benefits for smaller numbers of people, and could lead to higher yields. Negative impacts of the smallholder model are minimal, whereas the plantation model could lead to decreased food security, loss of land rights and biodiversity. This could permanently affect the livelihood situation of the local population, but this is not inevitable as there is considerable scope for implementing mitigating policies. The way in which a particular model is implemented in practice, its management and company values, can have a major influence. However, the biggest hurdle towards achieving sustained positive societal impacts in both models is their marginal profitability at current yields, costs and prices. Still, these results are highly sensitive to uncertain yields and oil prices. Better outcomes in the future are therefore not foreclosed. A reliable sustainability assessment requires many location-specific and operational company data. More quantitative indicators are ideally required to improve assessment of social impacts and effects on environment.
    Flyer Waterkwaliteit bij biologische varkens
    Bokma-Bakker, M.H. ; Eijck, I. ; Leeijen, J. ; Wielen, E. van der - \ 2014
    varkens - varkenshouderij - biologische landbouw - drinkwater - kwaliteit - hygiëne - agrarische bedrijfsvoering - pigs - pig farming - organic farming - drinking water - quality - hygiene - farm management
    Realiseert u zich dat drinkwater een van de belangrijkste bestanddelen is van het dagelijkse menu van uw varkens? Adviezen voor een goede drinkwaterkwaliteit.
    Jatropha sustainability assessment: Data from Tanzania, Mali and Mozambique
    Eijck, J.A.J. van; Rom Colthoff, J. ; Romijn, H.A. ; Heijnen, S. ; Ruijter, F.J. de; Jongschaap, R.E.E. - \ 2013
    Utrecht : NL Agency - 101
    Via (diergezondheids-)management naar minimalisering van antibioticagebruik : resultaten van een experimentele fase met biologische varkensbedrijven
    Bokma-Bakker, M.H. ; Eijck, I. ; Houwers, H.W.J. ; Vermeer, H.M. ; Vijver, L.P.L. van de - \ 2013
    Lelystad : Wageningen UR Livestock Research (Rapport / Wageningen UR Livestock Research 721) - 39
    varkenshouderij - zeugen - vleesproductie - biologische landbouw - antibiotica - dosering - diergezondheid - pig farming - sows - meat production - organic farming - antibiotics - dosage - animal health
    Experiences of organic pig farms with minimizing antibiotic use through strengthening the animal health management.
    Jatropha Assessment. Agronomy, socio-economic issues, and ecology. Facts from literature.
    Eijck, J.A.J. van; Smeets, E. ; Romijn, H.A. ; Balkema, A.J. ; Jongschaap, R.E.E. - \ 2010
    Utrecht, the Netherlands : NL Agency (Report NL Agency, November 2010 ) - 157
    jatropha - agronomie - sociale economie - duurzaamheid (sustainability) - voedselzekerheid - haalbaarheidsstudies - biobased economy - jatropha - agronomy - socioeconomics - sustainability - food security - feasibility studies - biobased economy
    Jatropha (Jatropha curcas L.) has been promoted as a potential renewable energy source for many of its advantageous properties in comparison to other biomass feedstock. This report summarises the agronomy, socio-economic issues, and ecology facts from literature on Jatropha. Such an overview is essential to formulate recommendations and policy guidelines to stimulate best project practices and also help to avoid the promotion of unviable or unsustainable practices.
    Usefulness of sero-surveillance for Trichinella infections in animal populations
    Teunis, P.F.M. ; Fonville, M.T.M. ; Dopfer, D.D.V. ; Eijck, I.A.J.M. ; Molina, V. ; Guarnera, E. ; Giessen, J.W.B. van der - \ 2009
    Veterinary Parasitology 159 (2009)3-4. - ISSN 0304-4017 - p. 345 - 349.
    trichinosis - pigs - epidemiology - diagnosis
    In this paper we evaluate serology as a tool to monitor Trichinella-free pig herds. Indoor, industrial-raised fattening pigs in the Netherlands are practically Trichinella-free, and were used as a negative reference cohort. A positive cohort was not available but we used sera from an endemic region in Argentina to model a plausible distribution of serological responses (as OD levels) in positive sera, employing the difference between the endemic sera and the negative Dutch sera. We describe a method for correcting for variation among ELISA plates using on-plate reference sera, and demonstrate how to apply these corrections to a collection of test sera from pig farms. The positive and negative reference distributions can be used to estimate fractions true and false positives, necessary for defining appropriate cutoffs to be used for classifying positive and negative animals. Based on this analysis, the serological test was shown to lack the predictive power required for its large scale deployment. The properties of the serological test were also compared to the conventional digestion assay, which is highly specific but considerably less sensitive.
    Vision of Dutch organic dairy farmers on animal health and welfare
    Smolders, E.A.A. ; Bestman, M.W.P. ; Eijck, I.A.J.M. - \ 2009
    Dutch organic dairy farmers expressed their opinions on animal health and welfare in order to be able to communicate it internally (within the dairy sector) and externally (to consumers). A healthy animal in their opinion is free of physical and psychological discomfort, survives in a herd, takes enough food and behaves naturally. Disease resistance, both innate and achieved, plays a crucial role in health and welfare. Breeding should aim at health criteria and high production may even be sacrificed for good health. Prevention is more important than treatment. A diseased animal should, to some extend, be given the opportunity to recover by itself. However, needless suffering should be prevented by effective treatment, which only as a last remedy, may be antibiotics. For the assessment of suffering, the intensity and duration of pain should all be taken into account, as well as the course of the disease and its prognosis, feed and water intake, survival in the herd and body reserves. Moreover, more regulations are no guarantee for a better health and welfare. Housing, adequate feeding, care and the farmers’ attitude toward his animals all contribute to animal health and welfare.
    A survey of gastrointestinal pig parasites on farms with different husbandry systems
    Eijck, I.A.J.M. ; Borgsteede, F.H.M. ; Meer, F.J.U.M. ; Jong, M.C.M. de - \ 2007
    In: Proceedings of the 18th IPVS congress, June 27 - July 2, Hamburg, Germany, 2004. - - p. 708 - 708.
    Effect van verdoofd castreren van biologische biggen op de dierenartskosten en arbeidsbelasting van de varkenshouder
    Eijck, L. ; Peet-Schwering, C.M.C. van der; Kiezenbrink, M. ; Vink, A. - \ 2007
    Tijdschrift voor Diergeneeskunde 132 (2007)12. - ISSN 0040-7453 - p. 476 - 479.
    castratie - bedwelmen - biggen - kostenanalyse - arbeidsomstandigheden - werkorganisatie - richtlijnen (guidelines) - dierenartsen - dierenwelzijn - biologische landbouw - castration - stunning - piglets - cost analysis - working conditions - organization of work - guidelines - veterinarians - animal welfare - organic farming - pain - responses
    We studied the costs of the veterinarian and physical work load for the farmer of anaesthetizing piglets before surgical castration compared with castration without anaesthesia on seven organic pig farms. Based on experiences from farmers and veterinarians in Norway a protocol 'Castration with anaesthesia' was formulated. This protocol was tested on the Experimental Farm at Raalte and then applied on six organic pig farms. By means of video recording it was measured how much time it takes to castrate and anaesthetize the piglets. The veterinarian anaesthetized the piglets with lidocame. The work load for the farmer was measured by scoring the physical load for the back and the upper limbs. It took 142 and 81 seconds per litter, respectively, to castrate and anaesthetize the piglets. The waiting time between anaesthesia and castration varied from 10 to 20 minutes on the six farms. Based on these measurements, it was calculated that the costs of the veterinarian (excluding call out fee) of anaesthetizing piglets are is an element of 1.73 per litter with five boars. The costs of lidocaine are is an element of 0.25 per litter with five boars. The costs per kg organic pig meat are is an element of 0.012. The farmers and their veterinarians were asked to react on some theses. They all agreed that the pig farmer should perform the anaesthesia with lidocaine. Anaesthetizing piglets before castration did not affect the physical load for the back and the upper limbs of the pig farmer.
    The effect of phytotherapy on experimental Ascaris suum infections in pigs
    Gaasenbeek, C.P.H. ; Borgsteede, F.H.M. ; Eijck, I.A.J.M. ; Schuurman, T. ; Gaag, M.A. van der - \ 2007
    Risk analysis of disposal of pig carcasses smaller than 40 kg in the Netherlands
    Mul, M.F. ; Bokma-Bakker, M.H. ; Eijck, I.A.J.M. - \ 2007
    Visie gezondheid en welzijn biologische landbouwhuisdieren = Vision health and welfare organic farm animals
    Smolders, E.A.A. ; Bestman, M.W.P. ; Eijck, I.A.J.M. - \ 2007
    Lelystad : Animal Sciences Group (Rapport / Animal Sciences Group 55) - 24
    pluimvee - varkens - geiten - dierhouderij - diergezondheid - dierenwelzijn - poultry - pigs - goats - animal husbandry - animal health - animal welfare
    Organic poultry, pig, goat and dairy cow framers were asked to give their opinion about some statements concerning animal health and animal welfare. Opinions and remarks where given in meetings with farmers per sector and by email or phone. The common opinions are gathered into a overall part of the summary, the specific remarks are given in a summary per animal sector.
    Samenvatting tussenresultaten van het project: verbeteren van de gezondheidsstatus van de Nederlandse varkenshouderij
    Eijck, I.A.J.M. - \ 2006
    [Lelystad] : Animal Sciences Group - 8
    varkenshouderij - zeugen - vleesproductie - diergezondheid - agrarische bedrijfsvoering - projecten - pig farming - sows - meat production - animal health - farm management - projects
    Met het project “Verbeteren van de gezondheidsstatus op Varkensbedrijven” wordt kennis ontwikkeld, en worden handvatten aangereikt, waarmee een varkenshouder ondersteund wordt in de beslissing of de overstap naar een “hogere gezondheidsstatus” perspectief biedt voor zijn eigen bedrijfssituatie. In totaal zijn 23 bedrijven bezocht, waarvan 2 KI-stations. Van de 21 primaire varkensbedrijven hadden er 18 een SPF-hoog status en 3 een SPF-laag status. Behalve 17 bedrijven in Nederland, hebben 5 bedrijven in Duitsland en 1 Belgisch bedrijf meegewerkt aan het onderzoek. Van de 18 SPF-hoog bedrijven houden er 9 zowel zeugen als vleesvarkens (deels of geheel gesloten), 8 alleen zeugen en 1 alleen vleesvarkens
    Risico-inschatting alternatieve productiewijze en andere wijze van houden van (vlees)pluimvee
    Lourens, A. ; Bolder, N.M. ; Hagenaars, T.H.J. ; Eijck, I.A.J.M. - \ 2006
    Lelystad : Animal Sciences Group (Rapport / Animal Sciences Group ) - 8
    pluimveehouderij - zoönosen - pluimvee - huisvesting van kippen - pluimveehokken - kuikens - strooisel - poultry farming - zoonoses - poultry - chicken housing - poultry housing - chicks - litter (plant)
    Deze proef is gericht op het evalueren van de transmissie van zoönosen tussen rondes waarbij kuikens de mogelijkheid hebben om gebruik te maken van uitloop. Doel van deze proef is om inzicht te krijgen in handhavingmechanismen van zoönosen in huisvestingssystemen met strooisel en uitlopen. Hierbij worden interventiestrategieén getest waarbij de transmissie van ronde op ronde wordt gekwantificeerd
    Uitwerking van een welzijnskoop bij een uitbraak van een besmettelijke dierziekte : notitie 1: volgorde van opkoop
    Enting, J. ; Bosma, A.J.J. ; Eijck, I.A.J.M. ; Kiezebrink, M.C. - \ 2006
    Lelystad : Animal Sciences Group - 17
    dierziekten - varkensziekten - varkenshouderij - nadelige gevolgen - agrarische bedrijfsvoering - veehouderijbedrijven - animal diseases - swine diseases - pig farming - adverse effects - farm management - livestock enterprises
    Aan de Animal Sciences Group is gevraagd om voor de welzijnsopkoop objectieve criteria op te stellen waarmee bij uitbraken van besmettelijke dierziekten de volgorde van welzijnsopkoop op transparante en eerlijke wijze kan geschieden. Het gaat er om wie wanneer in aanmerking komt voor welzijnsopkoop. De opdracht is in 2 activiteiten uitgewerkt. Enerzijds is een zo breed mogelijk beeld verkregen over de beleving van de welzijnsopkoop in de praktijk. Anderzijds is via modelberekeningen nagegaan wanneer voor welk type bedrijf een opkoopregeling theoretisch gezien noodzakelijk wordt. In deze notitie komt ondermeer aan de orde de periode die een bedrijf kan overbruggen zonder afvoer van varkens en noodoplossingen en knelpunten in diezelfde periode
    Animal health in organic livestock production systems: a review
    Kijlstra, A. ; Eijck, I.A.J.M. - \ 2006
    NJAS Wageningen Journal of Life Sciences 54 (2006)1. - ISSN 1573-5214 - p. 77 - 94.
    biologische landbouw - dierhouderij - regelingen - wetgeving - dierenwelzijn - Nederland - organic farming - animal husbandry - regulations - legislation - animal welfare - Netherlands - ascaridia-galli - toxoplasma-gondii - free-range - pasteurella-multocida - internal parasites - feather pecking - pig production - laying hens - infections - poultry
    Organic livestock production is a means of food production with a large number of rules directed towards a high status of animal welfare, care for the environment, restricted use of medical drugs and the production of a healthy product without residues (pesticides or medical drugs). The intentions of organic livestock production have been formulated by the International Federation of Organic Agriculture Movements (IFOAM) and were further implemented by EU regulation 2092/91 in the year 2000. The consequences of these rules for the health of the animals were not yet fully anticipated at the time these regulations were made and it has become clear that in some cases the rules are not clear enough, thereby even hampering the development of the production system. In this review we shall discuss the implications of these rules for animal health, whereby we shall focus on pig, poultry and dairy production systems. Disease prevention in organic farming is based on the principles that an animal that is allowed to exhibit natural behaviour is not subject to stress, is fed optimal (organic) feed, and will have a higher ability to cope with infections than animals reared in a conventional way. Fewer medical treatments would thus be necessary and if an animal would become diseased, alternative treatments instead of conventional drugs should be preferred. Although homeopathy or phytotherapy are recommended according to prevailing regulations, not many organic farmers use this treatment regimen because of lack of scientific evidence of effectiveness. Important health problems in organic livestock farming are often related to the outdoor access area, exposing the animals to various viral, bacterial and parasitic infections some of which may only influence the animals¿ own welfare whereas other ones may also endanger the health of conventional livestock (e.g. Avian Influenza) or pose a food safety (Campylobacter, Toxoplasma) problem to the consumer. Many preventive measures can be taken, such as using better animal breeds, optimized rearing conditions, pre- and probiotics, and addition of acids to the drinking water. In case of infectious disease, tight vaccination schedules may prevent serious outbreaks
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