Staff Publications

Staff Publications

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Landschapsarchitectuur : tussen ontwerp & onderzoek
Nijhuis, Steffen ; Niederer, Danielle ; Bekker, Joeri de; Berkers, Marieke ; Dooren, Noël van; Eker, Mark ; Horlings, Harma ; Janssen, Joks ; Kersten, Inge ; Tilborg, Hank van; Lenzholzer, Sandra ; Maaskant, Madeleine ; Meijer, Jan Herman ; Noordhuizen, Jorrit ; Nijkrake, Wieteke ; Noortman, Adrian ; Vries, Jeroen de; Vlug, Johan ; Stolk, Egbert ; Veenstra, Abe - \ 2017
Wageningen : Dutch School of Landscape Architecture (Dutch School of Landscape Architecture perspectieven vol. 1) - 120
Financial aspects of veterinary herd health management programmes
Ifende, V.I. ; Derks, M. ; Hooijer, G.A. ; Hogeveen, H. - \ 2014
Veterinary Record 175 (2014)9. - ISSN 0042-4900
dutch dairy farms - netherlands - mastitis - cattle - cows - objectives - diseases - model
Veterinary herd health management (VHHM) programmes are meant to support herd health and farmers’ income (Brand and Guard 1996). They were introduced in the Netherlands in the 1970s (Sol and Renkema 1984) and at present many veterinarians provide them to farmers. VHHM comprises a basic structure of goal setting, planning, execution and evaluation. Farms are visited every four to six weeks, where the veterinarian inspects the animals, evaluates gathered data and provides advice (Brand and Guard 1996). Ideally, VHHM combines animal health, food safety, animal welfare and public health with farm management and economics (Noordhuizen and Wentink 2001, LeBlanc and others 2006). VHHM programmes are used not only in the Netherlands, but on a wider scale, for instance in the UK (Wassell and Esslemont 1992) and Denmark (Kristensen and Enevoldsen 2008). The farmers in Europe have to produce under strict, often expensive and laborious, regulations while competing with commercial farmers outside the EU who are not subjected to the same rules (Cannas de Silva and others 2006). As dairy farmers strive for further efficiency in production, driven by market economics, the risks and consequences of poor health and suboptimal production increase (Sibley 2006). VHHM programmes are meant to help farmers to produce products of high quality for a low cost price (Brand and Guard 1996). Its primary objectives include the optimisation of herd health, productivity, quality of products and profitability of the dairy enterprise (Blood and others 1978). In practice, some farms or veterinarians embrace the concepts of VHHM by active participation, while others do not (Derks and others 2012). Also, veterinarians are not always able to meet farmers’ requirements for VHHM (Hall and Wapenaar 2012, Derks 2013). Its efficiency is hard to determine. There is, for instance, no recent information on the cost implications of this programme with regard to perceived profitability in farms. A limited number of controlled studies were carried out in the early 1970s and 1980s to evaluate the effects of VHHM on farm performance (Williamson 1980, Sol and others 1984). It was shown that a VHHM programme produced considerable benefits to participating farmers. A follow-up study showed approximately 8 per cent increase in margin per cow compared with the initial margin, using 1974–1975 as a base year (Hogeveen and others 1992). Since that time, no economic studies were carried out on the effects of these programmes. This study evaluates the economic relationship between participation in a VHHM programme and farm performance on dairy farms and estimates the costs incurred by the participation in this programme as well as the net returns (NR), including factors that influence the NR on a farm.
A cow-level association of ruminal pH on body condition score, serum beta-hydroxybutyrate and postpartum disorders in Thai dairy cattle
Inchaisri, C. ; Chanpongsang, S. ; Noordhuizen, J. ; Hogeveen, H. - \ 2014
Animal Science journal 85 (2014)9. - ISSN 1344-3941 - p. 861 - 867.
metabolic-acidosis - milk-yield - herds - sara - insemination - diet
Subacute ruminal acidosis in dairy cows occurs when ruminal pH is below about 5.5. However, the exact threshold level of ruminal pH affecting cow health is still in debate. This investigation was carried out in 505 cows within 31 farms. The postpartum disorders, including dystocia, retained placenta, anestrus, cystic ovary, metritis, clinical mastitis and lameness, were analyzed. Ruminal pH, serum beta-hydroxy butyrate (SBHB), serum urea nitrogen and body condition score (BCS) were measured once during the 3 to 6 weeks postpartum, while BCS was determined once more at 1 week before calving. Ruminal pH was determinded by ruminocentesis technique. The ruminal pH was evaluated to study the association with BCS, SBHB and postpartum disorders using linear regression in a generalized linear mixed model with farm as a random effect. The results show that low ruminal pH was associated with dystocia, metritis and lameness. Moreover, a low ruminal pH can be found in cows with a high loss of BCS after calving and also in cows with low SBHB postpartum. These findings confirmed the feasibility of the ruminocentesis technique and the association of low ruminal pH on various postpartum disorders at the individual cow level. However, the consequences of low ruminal pH on dairy cow health still needs more exploration for a better understanding of the physiological mechanisms.
The association of ruminal pH and some metabolic parameters with conception rate at first artificial insemination in Thai dairy cows
Inchaisri, C. ; Somchai Chantsavang, ; Noordhuizen, J.P.T.M. ; Hogeveen, H. - \ 2013
Tropical Animal Health and Production 45 (2013)5. - ISSN 0049-4747 - p. 1183 - 1190.
body condition score - milk-production - holstein cows - acidosis - fertility - herds - cattle - yield - ovulation - lipopolysaccharide
The objective of this study was to determine the association of metabolic parameters and cow associated factors with the conception rate at first insemination (FCR) in Thai dairy cows. The investigation was performed with 529 lactations from 32 smallholder dairy farms. At 3–6 weeks after parturition, blood samples and ruminal fluid were collected. Body condition scores (BCS) of cows were scored 1 week before expected calving date and at blood sampling date. Ruminal pH was measured at 2–4 h after morning feeding in ruminal fluid collected by ruminocentesis. Serum betahydroxybutyrate and serum urea nitrogen were measured by kinetic enzyme method. Cows with first insemination (AI) between 41 and 114 days postpartum were identified after pregnancy diagnosis for FCR. Breed, parity, interval from calving to first AI, BCS before calving, BCS after calving, loss in BCS after calving, SBHB, SUN, ruminal pH, and postpartum problems were selected as independent variables for a model with FCR as a dependent variable. A multivariable logistic regression model was used with farm as a random effect. Overall FCR was 27.2 %. The FCR depended on interval from calving to first AI, BCS before calving, and ruminal pH. The FCR between 69 and 91 days postpartum was significantly highest (45 %). Before calving, a cow with high BCS (=3.5) had significantly greater FCR than a cow with low BCS (=3.25; P
Veterinary advisory practice and sustainable production on dairy farms
Noordhuizen, J.P.T.M. ; Oenema, O. ; Boersema, S. ; Cannas da Silva, J. - \ 2012
Cattle practice: The Journal of the British Cattle Veterinary Association 20 (2012)1. - ISSN 0969-1251 - p. 5 - 18.
dairy calves - concurrent infections - prevalence - feces - enteropathogens - rotavirus - spain
The concept of ‘sustainable livestock production’ has greatly developed over the past decades. Currently, a certain degree of consensus has been reached. The concept comprises four major components: economy, ecology, society, and ethics. Dairy farmers, especially those with grassland-based production, play a paramount role in this concept. They have to provide landscape and water management services, next to healthy and animal-friendly dairy production. Other stake-holders in the food-production-consumption chain play a key role too. Therefore, the sustainability concept has to be considered at both the structural, technological and managerial levels. The first addresses the structure of the dairy production
Eefde: identiteit en toekomst van een woondorp in het groen
Kauffmann, A. ; Kersten, I. ; Noordhuizen, J. ; Weenink, D. ; Hoofwijk, H. - \ 2011
Wageningen : Wageningen UR Wetenschapswinkel (Rapport / Wageningen UR Wetenschapswinkel 274) - ISBN 9789085857303 - 42
ruimtelijke ordening - ruimtelijke analyse - ontwerp - bewonersparticipatie - plattelandsgemeenschappen - identiteit - gelderland - plattelandsplanning - physical planning - spatial analysis - design - community participation - rural communities - identity - rural planning
In aanvulling op het onlangs afgeronde Dorpsplan Eefde had de dorpsraad van dit Gelderse dorp behoefte aan een visie voor de sociaal-ruimtelijke ontwikkeling voor Eefde. Dit met name in het licht van de grote infrastructurele projecten die in Eefde gepland staan voor de komende jaren. Het is in dit kader dat de Dorpsraad zich tot de Wetenschapswinkel wendde met het verzoek na te denken over een toekomstvisie voor het dorp, maar dan wel één die nadrukkelijk verankerd is in de Eefdese realiteit.
Ons Europaplein : ontwerp voor een nieuw Europaplein in Renkum
Kersten, I.C. ; Noordhuizen, J. ; Duineveld, M. ; Pellis, A. ; Cate, B. ten - \ 2010
Wageningen : Wageningen UR, Wetenschapswinkel (Rapport / Wageningen UR, Wetenschapswinkel 272) - ISBN 9789085857280 - 80
landschapsarchitectuur - open ruimten - ruimtelijke ordening - sociale participatie - ontwerp - ruimtelijke analyse - veluwe - landscape architecture - open spaces - physical planning - social participation - design - spatial analysis
Het Europaplein in Renkum ligt er triest bij. Er is veel achterstallig onderhoud en het plein wordt als veel te stenig ervaren. Op basis van een gedegen sociaal ruimtelijke analyse en in nauwe samenspraak met de gebruikers van het plein is een schetsontwerp gemaakt voor een nieuw Europaplein: interessant voor iedereen met fijne plekken om te zitten en te spelen met midden op het plein mogelijkheden voor verschillende activiteiten. Het ontwerp is zo opgebouwd dat een gefaseerde realisatie mogelijk is. Afhankelijk van beschikbare financiering kunnen verschillende opties al dan niet worden uitgevoerd. Het ontwerp hoeft niet in één keer uitgevoerd te worden. De aanleg kan gespreid gerealiseerd worden zonder dat de kwaliteit van de uiteindelijke beoogde verbeteringen in het geding komt.
Synthesis of semantic modelling and risk analysis methodology applied to animal welfare
Bracke, M.B.M. ; Edwards, S.A. ; Metz, J.H.M. ; Noordhuizen, J.P.T.M. ; Algers, B. - \ 2008
Animal 2 (2008)7. - ISSN 1751-7311 - p. 1061 - 1072.
decision-support-system - environmental enrichment - pigs - part - behavior - criteria - calves
Decision-making on animal welfare issues requires a synthesis of information. For the assessment of farm animal welfare based on scientific information collected in a database, a methodology called `semantic modelling¿ has been developed. To date, however, this methodology has not been generally applied. Recently, a qualitative Risk Assessment approach has been published by the European Food Safety Authority (EFSA) for the first time, concerning the welfare of intensively reared calves. This paper reports on a critical analysis of this Risk Assessment (RA) approach from a semantic-modelling (SM) perspective, emphasizing the importance of several seemingly self-evident principles, including the definition of concepts, application of explicit methodological procedures and specification of how underlying values and scientific information lead to the RA output. In addition, the need to include positive aspects of welfare and overall welfare assessments are emphasized. The analysis shows that the RA approach for animal welfare could benefit from SM methodology to support transparent and science-based decision-making.
Veterinary advice for entrepreneurial Dutch dairy farmers : From curative practice to coach-consultant: what needs to be changed?
Noordhuizen, J.P.T.M. ; Egmond, M.J. van; Jorritsma, R. ; Hogeveen, H. ; Lievaart, J.J. - \ 2008
Tijdschrift voor Diergeneeskunde 133 (2008)1. - ISSN 0040-7453 - p. 4 - 8.
specialisatie - consulenten - melkveehouderij - bedrijfsgrootte in de landbouw - grote landbouwbedrijven - veterinaire praktijk - veterinaire opleidingen - beroepsvaardigheden - specialization - consultants - dairy farming - farm size - large farms - veterinary practice - veterinary schools - job skills
Dairy farms are tending to become larger, with a milk quota of more than 8 tons a year, and are managed by entrepreneurial dairy farmers with their own specific characteristics and farming style. Some Dutch veterinary practices appear unable to respond to this different style and often do not serve such farms or lose them as client. Moreover, the veterinary curriculum often focuses on traditional, family-run, smaller dairy operations and not on larger farms, which raises the question whether newly qualified veterinary practitioners are adequately trained to provide these entrepreneurial farmers with the services they require. This article addresses the characteristics of entrepreneurial dairy farmers and those of cattle practitioners, to determine whether cattle practitioners need to acquire other skills to better prepare them for their coaching-consultant tasks on larger dairy farms.
Final Remarks
Hogeveen, H. ; Velthuis, A. - \ 2008
In: Applying HACCP-based quality risk management on dairy farms / Noordhuizen, J., Da Silva, J.C., Boersema, S-J., Vieira, A., Wageningen : Wageningen Academic Press - ISBN 9789086860524 - p. 271 - 290.
Veterinary advice to entrepreneur-like dairy farmers regarding quality risk management
Velthuis, A. ; Hogeveen, H. - \ 2008
In: Applying HACCP-based quality risk management on dairy farms / Noordhuizen, J., Da Silva, J.C., Boersema, S-J., Vieira, A., Wageningen : Wageningen Academic Press - ISBN 9789086860524 - p. 219 - 248.
Support programes in a HACCP-based Quality Risk Management programme
Hogeveen, H. ; Velthuis, A. - \ 2008
In: Applying HACCP-based quality risk management on dairy farms / Noordhuizen, Jos, Cannas da Silva, J., Boersema, S-J., Vieira, A., Wageningen : Wageningen Academic Press - ISBN 9789086860524 - p. 127 - 156.
Veterinary advice to entrepreneur-like dairy farmers
Noordhuizen, J.P.T.M. ; Egmond, R. ; Dellen, D.K.H. ; Jorritsma, R. ; Hogeveen, H. ; Werven, T. van; Vos, P.L.A.M. ; Lievaart, J.J. - \ 2006
Capelle a/d IJssel : Pfizer Animal Health - 34
dierenartsen - veterinaire diensten - boeren - melkveebedrijven - ondernemerschap - attitudes - vaardigheden - communicatie - consulenten - coachen - veterinarians - veterinary services - farmers - dairy farms - entrepreneurship - skills - communication - consultants - coaching
De dierenarts van morgen : veterinair loonwerker of veterinair bedrijfsadviseur?
Egmond, M.J. van; Jorritsma, R. ; Vos, P.L.A.M. ; Werven, T. van; Lievaart, J.J. ; Dellen, D.K.H. ; Noordhuizen, J.P.T.M. ; Hogeveen, H. - \ 2006
Capelle a/d Ijssel : Pfizer Animal Health - 41
dierenartsen - veterinaire diensten - boeren - melkveebedrijven - ondernemerschap - attitudes - vaardigheden - communicatie - consulenten - coachen - veterinarians - veterinary services - farmers - dairy farms - entrepreneurship - skills - communication - consultants - coaching
Quality control on dairy farms with emphasis on public health, food safety, animal health and welfare
Noordhuizen, J.P.T.M. ; Metz, J.H.M. - \ 2005
Livestock Production Science 94 (2005)1-2. - ISSN 0301-6226 - p. 51 - 59.
systems
Consumer concern about livestock production methodologies is increasing over the last decades due to various outbreaks of food-borne zoonoses and animal diseases. Quality assurance programmes in the different production chains have been installed by industry to counteract the problems occurring. The primary producers, like the dairy farms, are not formally comprised in such programmes. Yet, quality control at dairy farm level goes beyond the quality control of the product milk alone. For better safeguarding food safety and public health, as well as animal health and welfare the whole production process on the dairy farm should be addressed. In this paper, quality control according to the concept and principles of HACCP is dealt with. More particularly health and welfare are addressed, while the approach of the Dutch dairy sector is used as an example. It is concluded that based on developments within the dairy sector as well as at the EU political level, it can be expected that the application of HACCP-compatible programmes on the dairy farms will be conducted in the near future. This application will help in identifying and managing the quality hazards and risks occurring in the production process on dairy farms, and in providing the consumer with more certainty about the quality of products of animal origin.
Assessing the repeatability and reproducibility of the Leg Score: a Dutch Claw Health Scoring System for dairy cattle
Holzhauer, M. ; Middelesch, H. ; Bartels, C.J. ; Frankena, K. ; Verhoeff, J. ; Noordhuizen-Stassen, E.N. ; Noordhuizen, J.P.T.M. - \ 2005
Tijdschrift voor Diergeneeskunde 130 (2005)14-15. - ISSN 0040-7453 - p. 440 - 443.
melkveehouderij - klauwen - hoeven - afknippen - herhaalbaarheid - timing - dierverzorging - observatie - dairy farming - claws - hooves - clipping - repeatability - care of animals - observation - reproductive-performance - floor systems - lameness - cows - associations - disorders - disease - lesions - traits - herds
The optimal moment for trimming the claws of all dairy cows in a herd was investigated by assessing the external rotation of the hind claws of individual cows relative to the spinal column. This leg score consisted of three independent descriptors: 1 (good/ normal), 2 (moderately deviant), and 3 (severely deviant). This study assessed the repeatability and the reproducibility of the leg score system, and the consistency of the advice given subsequently about trimming of the hind claws of all cows in the herd. Repeatability was assessed for 52 cows that were scored twice on the same day by 11 observers; the kappa value ranged from 0.17 to 0.66 (mean: 0.36). The probability of the same result for both assessments ranged from 0.49 to 0.80 (mean: 0.61). Claw trimming was advised if at least 20% of the cows had a leg score of 3. On the basis of the scores, 3 observers consistently advised trimming of the hind claws of all the cows in the herd, and 6 observers consistently advised against the need for trimming in the short term; 2 observers had an inconsistent advice. The reproducibility of the scoring system was assessed in two dairy herds (62 and 50 cows). Eight observers evaluated the leg score of the cows of both herds on the same day. The mean kappa value of the leg score for all pairs of different observers (A-B, A-C etcetera) was 0.24 [-0.08-0.49]. In conclusion, the leg score is not a reliable method for determining the optimal moment for claw trimming in dairy cattle. The reasons for the inconsistent observations require further investigation
The optimal moment for trimming the claws of all dairy cows in a herd was investigated by assessing the external rotation of the hind claws of individual cows relative to the spinal column. This leg score consisted of three independent descriptors: 1 (good/normal), 2 (moderately deviant), and 3 (severely deviant). This study assessed the repeatability and the reproducibility of the leg score system, and the consistency of the advice given subsequently about trimming of the hind claws of all cows in the herd. Repeatability was assessed for 52 cows that were scored twice on the same day by 11 observers; the kappa value ranged from 0.17 to 0.66 (mean: 0.36). The probability of the same result for both assessments ranged from 0.49 to 0.80 (mean: 0.61). Claw trimming was advised if at least 20 % of the cows had a leg score of 3. On the basis of the scores, 3 observers consistently advised trimming of the hind claws of all the cows in the herd, and 6 observers consistently advised against the need for trimming in the short term; 2 observers had an inconsistent advice. The reproducibility of the scoring system was assessed in two dairy herds (62 and 50 cows). Eight observers evaluated the leg score of the cows of both herds on the same day. The mean kappa value of the leg score for all pairs of different observers (A-B, A-C etcetera) was 0.24 [-0.08-0.49]. In conclusion, the leg score is not a reliable method for determining the optimal moment for claw trimming in dairy cattle. The reasons for the inconsistent observations require further investigation.
Associations between Energy Metabolism, LH Pulsatility and First Ovulation in early Lactating Cows
Jorritsma, R. ; Langendijk, P. ; Kruip, T.A.M. ; Wensing, T.H. ; Noordhuizen, J.P.T.M. - \ 2005
Reproduction in Domestic Animals 40 (2005)1. - ISSN 0936-6768 - p. 68 - 72.
dairy-cows - ovarian activity - dry period - postpartum - cattle - balance - secretion - hormone - leptin - number
This study was designed to elucidate associations between energy metabolism and LH pulsatility characteristics in early lactation, and days to first ovulation, in order to explain the relationship between energy balance and fertility observed in epidemiological studies. To this end, 10 multiparous HF cows were monitored during lactation, after the application of two different feeding strategies during the dry period. Days to first ovulation was assessed using blood progesterone measurements and LH pulsatility was measured in 8-h windows in the third week postpartum. The association between depth of negative energy balance and days to ovulation was confirmed. However, this study does not support the idea that LH pulsatility characteristics in early lactation are predictive for the interval between parturition and first ovulation
Influence of Negative Energy Balans on the Reproductive Performance after Treatment of Cystic Ovarian Disease with Gonadotrophin-releasing Hormone in Dairy Cows
Hooijer, G.A. ; Oijen, M.A.A.J. van; Frankena, K. ; Noordhuizen, J.P.T.M. - \ 2005
Journal of Veterinary Medicine Series A-Physiology Pathology Clinical Medic 52 (2005)6. - ISSN 0931-184X - p. 298 - 304.
early lactation - risk-factors - cattle - milk - fertility - parameters - diagnosis - herds
The aim of this study was to investigate whether a significant relation exists between the presence of a negative energy balance (NEB) in cows early in lactation and the reproductive performance after treatment with gonadotrophin-releasing hormone of cows with clinical cystic ovarian disease. Reproductive performance after treatment was assessed from the interval between treatment and first insemination (ITFI) and the interval between treatment and conception (ITC). Based on the outcome of the daily change of milk fat yield (¿fatg) between the first and second milk recordings post-partum, cows were considered to have passed the NEB nadir (positive ¿fatg) or not (negative ¿fatg). Lactations (n = 430) were divided into four groups according to the interval between calving and first milk recording (ICMR): (i) 0¿9 days; (ii) 10¿19 days; (iii) 20¿29 days; (iv) 30¿49 days. The relation between a NEB-proxy parameter (¿fatg) and reproductive performance was determined. A significant interaction existed for groups 1 and 3 (ICMR on 0¿9 and 20¿29 days post-partum respectively) with an increased and a decreased probability of being inseminated the first day after treatment (ITFI) respectively. However, no significant interaction was found between ¿fatg and the groups with regard to ITC.
Machine milking risk factors for teat end callosity in dairy cows on herd level
Neijenhuis, F. ; Klungel, G.H. ; Hogeveen, H. ; Noordhuizen, J.P.T.M. - \ 2005
In: Mastitis in dairy production. Current knowledge and future solutions, 4th IDF International Mastitis Conference, Maastricht, 12-15 June 2005. - Maastricht : Wageningen Academic Publishers - ISBN 9076998701 - p. 376 - 382.
The systems approach to udder health control
Noordhuizen, J.P.T.M. ; Hogeveen, H. - \ 2005
In: Mastitis in dairy production. Current knowledge and future solutions. 4th IDF International Mastitis Conference, Maastricht, The Netherlands, 12-15 June 2005. - Maastricht : Wageningen Academic Publishers - ISBN 9076998701 - p. 551 - 557.
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