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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    Onderzoek naar leverbot deel II: Vang slak in plaats van bot: Leverbotbestrijding risico’s & kansen
    Verkaik, J.C. ; Neijenhuis, F. ; Verwer, Cynthia - \ 2017
    Ekoland 37 (2017). - ISSN 0926-9142 - p. 20 - 21.
    liver flukes - fascioliasis - animal disease prevention - cattle husbandry - dairy farming - snail-borne diseases - cattle diseases - leverbot - fascioliasis - dierziektepreventie - rundveehouderij - melkveehouderij - ziekten overgebracht door slakken - rundveeziekten
    Slakken in de zomer wegfrezen uit de greppels minimaliseert de kans op leverbot. In combinatie met opstallen voor opname van besmetting kan zomerfrezen leverbot zelfs voorkomen. De kans op leverbot neemt eveneens aanzienlijk af door runderen evasief te weiden. Botten vangen (en doden) door het vee te behandelen, kan dankzij beide maatregelen achterwege blijven. De afhankelijkheid van middelen neemt af. Zeer gewenst nu resistentie alsmaar toeneemt en geregistreerde middelen voor lacterend en droogstaand vee ontbreken.
    Onderzoek naar leverbot deel 1: Instrument voor bedrijfsanalyse op risicofacturen leverbotbestrijding
    Verwer, Cynthia ; Verkaik, Jan ; Neijenhuis, Francesca - \ 2017
    Ekoland 37 (2017)6. - ISSN 0926-9142 - p. 24 - 25.
    leverbot - fascioliasis - dierziektepreventie - rundveehouderij - melkveehouderij - ziekten overgebracht door slakken - rundveeziekten - ziektebestrijding - liver flukes - fascioliasis - animal disease prevention - cattle husbandry - dairy farming - snail-borne diseases - cattle diseases - disease control
    risico’s & kansen Een in Nederland afgekeurde lever met vergrote galgangen met aanwijzingen voor ontsteking. Leverbotbestrijding Instrument voor bedrijfsanalyse op risicofactoren risico’s & kansen
    Eco-epidemiology of Bovine Tuberculosis (bTB) in an African savanna : The conflict between traditional pastoralist adaptations and disease transmission in the modern era
    Dejene, Sintayehu Workeneh - \ 2017
    Wageningen University. Promotor(en): H.H.T. Prins, co-promotor(en): W.F. de Boer; I.M.A. Heitkönig. - Wageningen : Wageningen University - ISBN 9789463436588 - 119
    cattle diseases - tuberculosis - disease transmission - pastoralism - animal ecology - risk factors - ethiopia - rundveeziekten - tuberculose - ziekteoverdracht - pastoralisme - dierecologie - risicofactoren - ethiopië

    Bovine tuberculosis (bTB) is a zoonotic disease, and remains a cause of concern for livestock, wildlife and human health, especially in Ethiopia. It is a contagious disease, so close contact between animals or sharing of feed between infected and non-infected animals are major risk factors for transmission. Thus, improving the understanding of the factors that promote contact between hosts (i.e., livestock animals but also wild ruminants) is critical for limiting bTB transmission in pastoral, multi-host communities. I found that the older the age of the cattle and the lower the body condition, the higher the chance of a positive bTB test result at the individual animal level. Moreover, at herd level, herd size, contact with wildlife, and the interaction of herd size and contact with wildlife were identified as significant risk factors for bTB prevalence in cattle in Ethiopia. Further to what is already known from the past studies, I found that the probability of contact with wildlife was positively influenced by herd size, through herd movement. As larger herds moved more and grazed in larger areas, the probability of grazing in an area with wildlife and contact with either infected cattle or infected wildlife hosts increased; this also increased the chances for bTB infection. I detected a possible ‘dilution effect’ in bTB, where a higher evenness of mammal species reduced the probability of bTB occurrence. This dilution effect might be caused by encounter reduction. Because the encounter rate is proportional to the distribution of the host species; evenness would then capture the probability of encounter between pathogens and each host species. Thus, species evenness can be an appropriate measure of biodiversity to explain disease risk. I also showed that bTB prevalence was positively associated with the invasion of the plant Prosopis (Prosopis juliflora), maybe due to the loss in host species evenness and the increase in cattle movement as a consequence of the loss of palatable grasses in Prosopis-infested areas. Moreover, social contacts between herd owners are also important, as I found that herds with a greater number of edges in a (social) network had more connections in the livestock transfer network, increasing the probability of becoming infected with bTB. Thus, cultural components like large herd size and social contacts are at odds with the global One Health rationale to reduce bTB.

    Eindrapportage Veerkracht van Melkvee I : verandering van dynamiek, voorspellende kracht
    Dixhoorn, Ingrid van; Mol, Rudi de; Werf, Joop van der; Reenen, Kees van - \ 2016
    Wageningen : Wageningen UR Livestock Research (Livestock Research rapport 956) - 94
    melkkoeien - melkvee - gustperiode - lactatie - rundveeziekten - diergezondheid - diergedrag - dierfysiologie - gegevens verzamelen - voorspelling - rundveeteelt - dairy cows - dairy cattle - dry period - lactation - cattle diseases - animal health - animal behaviour - animal physiology - data collection - prediction - cattle farming
    The transition period is a critical phase in the life of dairy cows. Early identification of cows at risk for disease would allow for early intervention and optimization of the transition period. Based on the theory of resilience of biological systems we hypothesize that the level of vulnerability of an individual cow can be quantified by describing dynamical aspects of continuously measured physiological and behavioural variables. To examine the relationship between the risk to develop diseases early in lactation and dynamic patterns of high-resolution, physiological and behavioural data, were continuously recorded in individual cows before calving. Dynamic, quantitative parameters for high-resolution physiological and behavioural measures, continuously acquired during the dry period have predictive value for the risk of cows to develop diseases during the early lactation period. Our results suggest that quantitative parameters derived from sensor data may reflect the level of resilience of individual cows.
    Bioeconomic modelling of foot and mouth disease and its control in Ethiopia
    Jemberu, W.T. - \ 2016
    Wageningen University. Promotor(en): Henk Hogeveen, co-promotor(en): Monique Mourits. - Wageningen : Wageningen University - ISBN 9789462576872 - 175
    foot-and-mouth disease virus - economic models - mathematical models - epidemiology - animal diseases - cattle - cattle diseases - ethiopia - mond- en klauwzeervirus - economische modellen - wiskundige modellen - epidemiologie - dierziekten - rundvee - rundveeziekten - ethiopië

    Keywords: Control, cost-benefit, economic impact, epidemiology, Ethiopia, Foot and mouth disease, intention, modelling, production system.

    Bioeconomic Modelling of Foot and Mouth Disease and Its control in Ethiopia

    Foot and mouth disease (FMD) is a highly contagious viral disease which affects cloven hoofed animals. FMD is endemic in Ethiopia with potential impact both on national and household economies because of its effect on production and trade. The general objective of this PhD research was to provide insight into the epidemiology and economics of FMD and its control in Ethiopia to support decision making in the control of the disease.

    A study of the national incidence of FMD outbreak revealed that the disease is endemic in all regional states affecting more than a quarter of the country every year, with the highest frequency of outbreaks occurring in the central, southern and southeastern parts of the country. The type of production system, presence of a major livestock market and/or route, and adjacency to a national parks or wildlife sanctuary were associated with the risk of outbreaks in the districts.

    Field outbreak study indicated that FMD morbidity rates of 85% and 95 % at herd level; and 74% and 61% at animal level in the affected herds in the crop–livestock mixed system (CLM) and pastoral system, respectively. The herd level economic loss estimates were on average USD 76 per affected herd in CLM and USD 174 per affected herd in the pastoral production system.

    Study of motivation of farmers to implement FMD control, through the Health Belief Model (HBM) framework, revealed that almost all farmers had high intention to implement FMD vaccination free of charge, which decreases, especially in CLM system, if the vaccine is charged. Farmers in the pastoral and crop-livestock mixed production systems had low intention to implement herd isolation and animal movement restriction control measure. Among the HBM perception constructs perceived barrier was found to be the most important predictor of the intention to implement FMD control measures.

    A modelling study on the national economic impact and cost-benefit analysis FMD control strategies showed that the annual cost of the disease is about 1,354 million birr. A stochastic cost-benefit analysis of three potential FMD control strategies indicated that all the strategies on average have a positive economic return but with variable degree of uncertainty including possibility of loss. Targeted vaccination strategy gives relatively the best economic return with relatively less risk of loss.

    Leverbot in kaart gebracht : leverbotinfecties herkennen, genezen en voorkomen
    Neijenhuis, F. ; Verkaik, J.C. ; Wagenaar, J.P. ; Verwer, C. - \ 2015
    Ekoland (2015)3. - ISSN 0926-9142 - p. 24 - 25.
    leverbot - melkveehouderij - dierziektepreventie - melkproductie - rundveeziekten - liver flukes - dairy farming - animal disease prevention - milk production - cattle diseases
    Leverbotinfecties zijn in toenemende mate een knelpunt bij melkgevende koeien die weiden of vers gras op stal gevoerd krijgen. De verliezen ten gevolge van leverbotinfecties worden onderschat. Een onderzoeksproject heeft een instrument ontwikkeld dat de gevolgen op bedrijfsniveau in kaart kan brengen en handelingsperspectief geeft.
    Transmissie van Mycobacterium bovis tussen mens en dier
    Vries, G. de; Beer, J. de; Bakker, D. ; Soolingen, D. - \ 2015
    Infectieziekten bulletin 26 (2015)5. - ISSN 0925-711X - p. 103 - 106.
    mycobacterium bovis - rundveeziekten - rundveehouderij - volksgezondheid - mycobacterium tuberculosis - tuberculose - zoönosen - diergezondheid - mycobacterium bovis - cattle diseases - cattle husbandry - public health - mycobacterium tuberculosis - tuberculosis - zoonoses - animal health
    Nederland is officieel vrij van rundertuberculose. Toch komt af en toe nog Mycobacterium bovis-tuberculose voor bij relatief jonge autochtone Nederlanders. Ook zijn er recent nog wel boviene-uitbraken geweest. Dat roept de vraag op of er ook nu nog transmissie is van M.bovis tussen mens en dier. Daarom zijn in een studie de DNA fingerprints van patiënten met M.bovis en van dieren met rundertuberculose met elkaar vergeleken.
    Integrale diergezondheid : beheersing van leverbot
    Neijenhuis, F. ; Verkaik, J.C. ; Verwer, C.M. ; Smolders, E.A.A. ; Wagenaar, J.P. - \ 2014
    Lelystad : Wageningen UR Livestock Research (Report / Wageningen UR Livestock Research 807) - 32
    rundveeziekten - fascioliasis - diergezondheid - melkvee - melkveehouderij - herkauwers - risicofactoren - dierziektepreventie - biologische landbouw - ziektebestrijding - risicoanalyse - dierenwelzijn - cattle diseases - fascioliasis - animal health - dairy cattle - dairy farming - ruminants - risk factors - animal disease prevention - organic farming - disease control - risk analysis - animal welfare
    Leverbotinfecties zijn in toenemende mate een knelpunt in de diergezondheid van melkvee en andere herkauwers. Bestrijding en/of behandeling van leverbot kent de volgende beperkingen: de besmettingscyclus is complex, beschikbare geneesmiddelen zijn in Nederland nagenoeg niet inzetbaar bij dieren die melk produceren voor menselijke consumptie en indien inzetbaar bij andere diercategorieën, is er in toenemende mate sprake van resistentie tegen geneesmiddelen. Bovendien neemt de oppervlakte leverbotgevoelig grasland toe. Het gevolg is meer geïnfecteerde dieren die afhankelijk van de mate van besmetting, negatieve effecten ondervinden op hun gezondheid, met mogelijk productiederving als gevolg. Dit rapport beschrijft het project ‘Integrale diergezondheid: beheersing van leverbot’. Dit project heeft een concept instrument ontwikkeld om de leverbotstatus op het bedrijf te beoordelen, de risicofactoren in kaart te brengen en mogelijke preventieve maatregelen aan te geven.
    Bedrijfsgebonden dierziekten
    Antonis, A.F.G. - \ 2012
    Lelystad : Central Veterinary Institute - 46
    kalveren - kalverziekten - vleeskalveren - rundveeziekten - diagnostiek - diergezondheid - calves - calf diseases - veal calves - cattle diseases - diagnostics - animal health
    Het diergezondheidsbeleid, zoals vastgelegd in de Nationale Agenda Diergezondheid (NAD), stelt de veehouder in de eerste plaats zelf verantwoordelijk voor de gezondheid van zijn dieren. Hoewel de meeste veehouders op professionele wijze omgaan met de gezondheidszorg van hun dieren, is er sprake van een aantal bedrijfsgebonden gezondheidsproblemen dat in grote mate voorkomt in de huidige veehouderij. Als gevolg van deze bedrijfsgebonden aandoeningen kan een hoog antibioticumgebruik ontstaan, met het gevaar van antibioticumresistenties. Voor de bedrijfsgebonden dierziekten die een zoönotische karakter hebben, kan de gezondheid van de veehouder en het deel van de (beroeps)bevolking dat met de dieren in aanraking komt een belangrijke extra reden voor aandacht zijn. Daarnaast wordt het welzijn van dieren in aanzienlijke mate geschaad door sommige bedrijfsgebonden diergezondheidsproblemen. De doelstellingen van de NAD om bedrijfsgebonden diergezondheidsproblemen zoveel mogelijk terug te dringen raakt derhalve aan de politieke agenda op het gebied van dierwelzijn, preventie van zoönosen en vermindering van antibioticumgebruik en -resistentie. Het terugdringen van bedrijfsgebonden aandoeningen is daarmee een onlosmakelijk onderdeel van het werken aan een duurzame veehouderij.
    Vaccineren tegen uierontsteking werkt
    Livestock Research, - \ 2012
    dairy farming - dairy cows - mastitis - vaccination - udders - cattle diseases - animal disease prevention - somatic cell count
    Diarrhea and loss of production on Dutch dairy farms caused by the Schmallenberg virus
    Muskens, J. ; Smolenaars, A.J. ; Poel, W.H.M. van der; Mars, M.H. ; Wuijckhuise, L. van; Holzhauer, M. ; Weering, H. van; Kock, P. - \ 2012
    Tijdschrift voor Diergeneeskunde 137 (2012)2. - ISSN 0040-7453 - p. 112 - 115.
    melkveehouderij - melkopbrengst - diarree - schmallenbergvirus - rundveeziekten - orthobunyavirus - virusziekten - bloedmonsters verzamelen - dairy farming - milk yield - diarrhoea - schmallenberg virus - cattle diseases - orthobunyavirus - viral diseases - blood specimen collection - adult cattle - coronavirus
    At the end of August and the first two weeks of September 2011 dozens of veterinary practitioners reported to GD Veekijker (Animal Health Service) several dairy herds with cows with sudden decreased milk production, watery diarrhea and sometimes fever. In the beginning these reports came from the Eastern region of the Netherlands, after that also from the other three regions. The percentages of diseased herds per veterinary practice varied from a few till dozens per cent. Extensive bacteriological, virological and parasitological testing of the feces of sick cows did not reveal an infectious cause of the clinical problems. Recently, 50 stored blood samples of clinically diseased cattle were tested for the Schmallenbergvirus using a PCR, and 36% (18/50) tested positive. A large group of control cows (n=115) was also tested with the PCR and all cattle tested negative. Likely the Schmallenbergvirus was the primary cause of the clinical symptoms in the Dutch dairy herds. Further research will be done to confirm this.
    Dossier Schmallenbergvirus
    Groen Kennisnet, - \ 2012
    [S.l.] : Groen Kennisnet
    schmallenbergvirus - orthobunyavirus - rundveehouderij - schapenhouderij - rundveeziekten - schapenziekten - virusziekten - literatuuroverzichten - schmallenberg virus - orthobunyavirus - cattle husbandry - sheep farming - cattle diseases - sheep diseases - viral diseases - literature reviews
    Dossier van deze nieuwe virusziekte bij schapen en koeien in Nederland: het Schmallenbergvirus.
    Spread and Control of Rift Valley Fever virus after accidental introduction in the Netherlands: a modelling study.
    Fischer, E.A.J. ; Boender, G.J. ; Koeijer, A.A. de; Nodelijk, G. ; Roermund, H.J.W. van - \ 2011
    Lelystad : CVI - 59
    veehouderij - riftvalleykoortsvirus - virusziekten - rundveeziekten - schapenziekten - geitenziekten - wiskundige modellen - uitbraken (ziekten) - waarschijnlijkheidsanalyse - livestock farming - rift valley fever virus - viral diseases - cattle diseases - sheep diseases - goat diseases - mathematical models - outbreaks - probability analysis
    Rift Valley Fever (RVF) is a zoonotic vector-borne infection and causes a potentially severe disease in both humans and young animals. The Ministry of Economic Affairs, Agriculture and Innovation (EL&I) is interested in the risk of an outbreak of Rift Valley Fever virus (RVFV) for the Netherlands, and more knowledge is needed about the risk of introduction of the virus, the risk of spread (transmission) of the virus in the country once introduced, and the methods for control and surveillance. For this purpose, a mathematical model was developed to study (1) the probability of a RVF outbreak at different days of introduction during the year, (2) the probability of persistence of the infection during the entire year, and (3) outbreak size and duration at different days of introduction during the year.
    Socio-psychological research on barriers and incentives to a clinically suspicious situation at a farm in order to report early detection of notifiable animal diseases
    Elbers, A.R.W. - \ 2010
    Tijdschrift voor Diergeneeskunde 135 (2010)14-15. - ISSN 0040-7453 - p. 566 - 569.
    veehouderij - rundveeziekten - varkensziekten - pluimveeziekten - infectieziekten - virusziekten - detectie - risicoschatting - alarmsystemen - veterinaire praktijk - livestock farming - cattle diseases - swine diseases - poultry diseases - infectious diseases - viral diseases - detection - risk assessment - alarms - veterinary practice
    Enige tijd geleden heeft de KNMVD actief medewerking verleend aan onderzoek naar belemmeringen en stimuli om een klinisch verdachte situatie op veehouderijen te melden bij het centrale meldpunt van de VWA. Recent zijn resultaten van dit onderzoek gepubliceerd in het wetenschappelijke tijdschrift Veterinary Microbiology en geaccepteerd in Rev. sci. tech. OIE. Omdat deze problematiek relevant is voor veel dierenartsen, is hierbij van de artikelen een uitgebreide samenvatting gemaakt.
    Mastitis and farmer mindset : towards effective communication strategies to improve udder health management on Dutch dairy farms
    Jansen, J. - \ 2010
    Wageningen University. Promotor(en): Cees Leeuwis, co-promotor(en): Reint-Jan Renes; T.J.G.M. Lam. - [S.l.] : S.n. - ISBN 9789085856955 - 168
    diergezondheid - dierziekten - rundveeziekten - rundermastitis - uiers - preventie - bedrijfsvoering - verbetering - voorlichting - communicatie - efficiëntie - melkveehouderij - melkveebedrijven - boeren - nederland - dierziektepreventie - animal health - animal diseases - cattle diseases - bovine mastitis - udders - prevention - management - improvement - extension - communication - efficiency - dairy farming - dairy farms - farmers - netherlands - animal disease prevention

    Mastitis (udder inflammation) is considered one of the main health issues in the dairy industry. It is a costly disease that also has an impact on animal welfare, on milk quality, and on farmers’ pleasure in their work. Furthermore, the use of antimicrobial treatments as a result of mastitis – the biggest contributor to antibiotic use in the dairy industry – is undesirable due to the risk of both antibiotic contamination of milk and the development of bacterial resistance. Consequently, mastitis prevention is relevant for animal welfare, for society, the dairy industry, and farmers.
    Why some farmers, even though it would improve their results, do not implement effective mastitis management practices is not always known. It is assumed that ‘farmer mindset’, including farmers’ attitudes, beliefs, values, knowledge, perceived norms, and perceived self efficacy, influences farmers’ behavior and therefore their herds’ udder health status.
    Worldwide, several projects have started to influence farmers’ behavior to improve udder health. In 2005, the Dutch Udder Health Centre (UGCN) was established to execute a national program to improve udder health in five years, aiming at better implementation of the current knowledge on mastitis prevention by deploying various communication strategies to reach farmers and to change their mindset. This thesis aims to understand Dutch dairy farmers’ behavior and mindset regarding udder health management and to study the efficacy of various communication strategies.
    In the studies presented in this thesis, a variety of qualitative and quantitative methods were used, combining social and veterinary sciences to gather data on farmer mindset towards mastitis and data on the efficacy of various communication strategies. In this interdisciplinary and practice-based approach, studies were initiated on the basis of observations and experiences during the execution of the udder health program or on the basis of emerging questions that followed from the previous studies. Results and recommendations derived from the studies were reported to UGCN and as much as possible implemented to further improve the program; this led to a strong interaction between science and practice.
    The results of this thesis show that farmer mindset is a decisive factor in mastitis prevention. In particular, the perceived level of mastitis problems (i.e. “Do I have a problem?”) as well as the perceived efficacy of preventive measures (i.e. “Can I solve the problem easily?”) are important determinants that need to be addressed in communication strategies. Veterinarians can be important intermediaries in communication about udder health improvement, provided that they are aware of their role as proactive advisor and apply the relevant communication skills.
    To be effective, a disease program should do more than distribute technical information about best management practices to dairy farmers. Prevention of complex diseases, such as mastitis, requires customized communication strategies as well as an integrated approach between various stakeholders and different scientific disciplines. Such programs need to be supported by a combination of several policy measures to change farm management in the long term, because for example milk price, milk quota, and financial incentives on milk quality norms, such as bonuses and penalties, have a strong influence on farmer mindset. It should therefore be taken into account that farmers are part of, and are influenced by, a wide societal and institutional context.
    This thesis provides insight into Dutch dairy farmers’ behavior and mindset towards udder health management, and into the way these can be affected by communication strategies. The findings of this thesis can contribute to the optimization of future programs designed to control and prevent livestock diseases.

    Epizootic congenital hydranencephaly and abortion in cattle due to bluetongue virus serotype 8 in the Netherlands.
    Wouda, W. ; Peperkamp, N.H.M.T. ; Roumen, M. ; Muskens, J. ; Rijn, P.A. van; Vellema, P. - \ 2009
    Tijdschrift voor Diergeneeskunde 134 (2009)10. - ISSN 0040-7453 - p. 422 - 427.
    spontane abortus - bluetonguevirus - virusziekten - virussen - serotypen - rundveeziekten - spontaneous abortion - bluetongue virus - viral diseases - viruses - serotypes - cattle diseases - calves - encephalopathy - transmission
    An outbreak of hydranencephaly in aborted foetuses and newborn calves occurred following the 2007 epidemic of bluetongue serotype 8 (BTV8\net2006) in the Netherlands. In total 35 aborted foetuses and 20 live-born calves, submitted from September 2007 to May 2008, were examined pathologically. Foetuses with gestational ages between 4 and 9 months (mean 6.8 month) showed varying stages of cerebral malformation. Initial stages were cavitations in the cerebral hemispheres with massive destruction of neuroparenchyma, calcium deposits, and a phagocytic inflammatory response. Later stages showed distinct hydranencephaly, the cerebral hemispheres being almost completely replaced by fluid-filled sacs. In seven cases the cerebellum was affected as well, but brainstem structures were intact. Newborn calves with clinical signs of abnormal behaviour ('dummy calves'), circling, head pressing, incoordination, and blindness were seen from the end of January 2008. The calves were born between 2nd January and 16th March 2008. The calves were euthanized after 1 day up to 14 weeks (mean 4-7 weeks). Brain malformations in these calves were confined to the cerebrum and consisted of varying degrees of hydranencephaly. Spleen tissue was PCR-positive for bluetongue virus (BTV) in 21 of 35 foetuses and in 1 of 20 calves. A higher percentage of PCR-positives was found in foetuses aborted in early gestation than in late gestation, suggesting clearance of BTV during gestation. Fifteen of 33 dams of PCR-negative hydranencephalic foetuses or calves could be traced and all were BTV-seropositive, indicating a previous BTV infection. The timing of hydranencephaly cases in live-born calves during the first months of 2008 was consistent with infection in early gestation during the prior transmission season. Vertical transmission and teratogenic potential have previously been described for modified-live vaccines for bluetongue but are highly unusual for field strains of BTV, which raises the issue whether BTV8\net2006 or its ancestor has been cell- or laboratory-adapted in the past
    Leverbot toenemend probleem
    Smolders, E.A.A. ; Borgsteede, F.H.M. ; Gaasenbeek, C.P.H. - \ 2009
    V-focus 6 (2009)5. - ISSN 1574-1575 - p. 20 - 21.
    melkveehouderij - rundveeziekten - leverbot - veterinaire producten - dierziektepreventie - dairy farming - cattle diseases - liver flukes - veterinary products - animal disease prevention
    In de specifieke leverbotgebieden (door nattere perioden en peilverhoging nemen die toe) kan ernstige leverbotbesmetting voorkomen. Voor het behandelen van melkvee tegen leverbot zijn in Nederland alleen middelen geregistreerd voor niet-melkgevende koeien
    Bluetonguevirus serotype 8 in jonge gezonde kalveren
    Wuijckhuise, L. van; Vellema, P. ; Pelgrim, W. ; Tolboom, R. ; Mulder, H. ; Rijn, P.A. van - \ 2008
    Tijdschrift voor Diergeneeskunde 133 (2008)23. - ISSN 0040-7453 - p. 922 - 994.
    melkveehouderij - melkkoeien - kalveren - rundveeziekten - bluetonguevirus - kouderesistentie - dairy farming - dairy cows - calves - cattle diseases - bluetongue virus - cold resistance
    Following the detection in Northern Ireland of bluetongue serotype-8 (BTV-8) PCR-positive calves born from PCR-negative but seropositive heifers imported from the Netherlands, an investigation was started to determine whether PCR-positive calves were born in the first quarter of 2008 in the Netherlands. Blood samples were collected on 43 dairy farms from 388 cow-calf combinations. All calves were at least 10 days old and had been born after 1 January 2008. In total, 229 cows had had a BTV-8 infection, and from these cows 37 PCR-positive calves were born (16.2 %). If these calves are viraemic, they can contribute to BTV-8 overwintering in North-West Europe.
    Herintroductie van echinococcose via runderimport in Nederland
    Aalten, M. ; Zuchner, L. ; Bruinier, E. ; Holzhauer, M. ; Wouda, W. ; Borgsteede, F.H.M. ; Spong, H. ; Giessen, J. van der - \ 2008
    Tijdschrift voor Diergeneeskunde 133 (2008)21. - ISSN 0040-7453 - p. 898 - 902.
    rundvee - slachtdieren - dierenhandel - echinococcus - rundveeziekten - import - zoönosen - nederland - centraal-europa - cattle - meat animals - trade in animals - echinococcus - cattle diseases - imports - zoonoses - netherlands - central europe - echinococcus-granulosus - romania
    Since East European countries joined the EU, the import of both dairy and beef cows from these countries increased considerably. Based on the identification and registration system it turned out that in the period from May until December 2007 about 200 cows per month were imported from Romania. These animals were either slaughtered immediately or in autumn. In autumn, cysts were noticed both in slaughtered cows during meat inspection and in deceased animals (originated from Romania) during postmortem investigation performed by the Animal Health Service. Because cysts were strongly reminiscent of Echinococcus granulosus hydatid cysts, samples were sent to the authorized laboratory (National Reference Laboratory of Parasitology), where the reintroduction of this potentially zoonotic parasitic infection has been confirmed. The risks of reintroduction of E. granulosus in the Netherlands are described.
    Digital Dermatitis and the manageable state of disease
    Dopfer, D.D.V. - \ 2007
    cattle husbandry - dermatitis - foot diseases - claws - cattle diseases - mathematical models - farm management
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