Proceedings of the 10th International Colloquium on Paratuberculosis

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#203 Milk quality assurance for paratuberculosis in <strong>the</strong> Ne<strong>the</strong>rlands Weber MF 1 , Lam TJGM 1 , Franken P 1 . 1 GD Animal Health Service, PO Box 9, 7400 AA Deventer, The Ne<strong>the</strong>rlands INTRODUCTION A bulk milk quality assurance program (BMQAP) for paratuberculosis in Dutch dairy herds was initiated in 2006. The aim <strong>of</strong> <strong>the</strong> BMQAP is to reduce <strong>the</strong> concentration <strong>of</strong> Mycobacterium avium subsp. paratuberculosis (Map) in milk delivered to <strong>the</strong> milk factories. The BMQAP is run alongside <strong>the</strong> pre-existing ‘Intensive Paratuberculosis Program’ (IPP; aiming at elimination <strong>of</strong> Map and low-risk trade <strong>of</strong> cattle). PROGRAM The BMQAP starts with an initial assessment consisting <strong>of</strong> a single herd examination. Testnegative herds enter a surveillance procedure consisting <strong>of</strong> biennial herd examinations and are assigned ‘Status A’ (formerly ‘green’). Test-positive herds enter a control procedure consisting <strong>of</strong> annual herd examinations and are assigned ‘Status B’ if test-positives are culled and ‘Status C’ o<strong>the</strong>rwise (formerly ‘red’). Herd examinations consist <strong>of</strong> a milk-ELISA <strong>of</strong> all lactating cattle. Milk samples regularly collected for Milk Production Registration are used for testing. ELISA results may be confirmed by individual fecal culture. The program promotes preventive management measures to reduce <strong>the</strong> risk <strong>of</strong> introduction and spread <strong>of</strong> Map in participating herds. RESULTS Results <strong>of</strong> <strong>the</strong> program achieved in 2006 and 2007 were presented at <strong>the</strong> 9ICP (Weber and van Schaik, 2007). The results <strong>of</strong> <strong>the</strong> program are in line with our expectations based on modeling studies, presented at 8ICP (van Roermund et al., 2005; Weber et al., 2005). The program turned out to be farmer friendly, easy to communicate, and easy to manage. Based on <strong>the</strong> results achieved in 2006 and 2007, <strong>the</strong> Dutch dairy processing industries have taken <strong>the</strong> lead to increase <strong>the</strong> uptake <strong>of</strong> <strong>the</strong> BMQAP. In 2008, <strong>the</strong> majority <strong>of</strong> costs for participating farmers were covered by <strong>the</strong> dairy processing industries. This resulted in a major increase <strong>of</strong> <strong>the</strong> uptake <strong>of</strong> <strong>the</strong> BMQAP. By June 1st, 2009, approximately 17,000 (85%) <strong>of</strong> <strong>the</strong> 20,000 Dutch dairy herds participated in <strong>the</strong> BMQAP, alongside approximately 450 (2%) herds in <strong>the</strong> IPP (Fig. 1). FUTURE DEVELOPMENTS The Dutch dairy industries have decided that by 2010 all Dutch dairy herds delivering milk to <strong>the</strong>ir factories are required to participate in ei<strong>the</strong>r <strong>the</strong> BMQAP or <strong>the</strong> IPP. Moreover, by 2011 all herds are required to have at least status ‘A’ or ‘B’. CONCLUSION It is concluded that <strong>the</strong> bulk milk quality assurance program attracts increasing numbers <strong>of</strong> participants, is appreciated by <strong>the</strong> Dutch dairy industries, and is a practical and attractive way to assign a herd-status in relation to <strong>the</strong> aim <strong>of</strong> <strong>the</strong> program. 233
Proportion <strong>of</strong> dairy herds 1 0.8 0.6 0.4 0.2 0 IPP BMQAP 2003 2004 2005 2006 2007 2008 2009 Year / Month Fig. 1. Proportion <strong>of</strong> participating dairy herds in <strong>the</strong> bulk milk quality assurance program for paratuberculosis (BMQAP) and <strong>the</strong> pre-existing ‘Intensive Paratuberculosis Program’ (IPP) in <strong>the</strong> Ne<strong>the</strong>rlands. REFERENCES van Roermund HJW, Weber MF, de Koeijer AA, Velthuis AGJ, de Jong MCM, 2005. Development <strong>of</strong> a milk quality assurance program for paratuberculosis: from within- and between herd dynamics to economic decision analysis. In: Manning EJB, Nielsen SS (Eds.), <strong>Proceedings</strong> 8th <strong>International</strong> <strong>Colloquium</strong> on Paratuberculosis, Copenhagen, Denmark, 14 - 18 August, pp. 51-59. Weber MF, van Roermund HJW, Velthuis AGJ, de Koeijer AA, de Jong MCM, 2005. Milk quality assurance programmes for paratuberculosis: stochastic simulation <strong>of</strong> within-herd infection dynamics and economics. In: Manning EJB, Nielsen SS (Eds.), <strong>Proceedings</strong> 8th <strong>International</strong> <strong>Colloquium</strong> on Paratuberculosis, Copenhagen, Denmark, 14 - 18 August, pp. 60-73. Weber MF, van Schaik G, 2007. Results <strong>of</strong> <strong>the</strong> Dutch bulk milk quality assurance programme for paratuberculosis. In: Nielsen SS (Ed.), <strong>Proceedings</strong> <strong>of</strong> <strong>the</strong> 9th <strong>International</strong> <strong>Colloquium</strong> on Paratuberculosis, Tsukuba, Japan, October 28 - November 2, pp. 324-327. 234
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Book of Abstracts
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Proceedings <stron
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Grant Support and Sponsorship <stro
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Kari Røste Lybeck, Anne Kristine S
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Diagnostics and Genotyping Convenor
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#229 Detecting Johne’s Disease he
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Kalis CHJ, Hesselink JW, Barkema HW
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MATERIALS AND METHODS Sampling For
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To better determine the</st
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#107 Multilocus Short Sequence Repe
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Fig. 1. Dendogram (showing genetic
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#105 MIRU-VNTR genotyping o
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Diagnostics and Genotyping Poster A
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Missouri). Serum from a cow with do
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#7 Significance of
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RESULTS Of the 327
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Direct fecal nested Map PCR testing
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#16 Histopathological and immunohis
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(d) f57 Real Time PCR. The figure o
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• MIRU (3 loci); • VNTR-MIRU (7
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indexes, compared to each single an
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#108 Evaluation of
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#110 Detection and molecular confir
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endoscopic criteria and histopathol
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Bull TJ, McMinn EJ, Sidi-Boumedine
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#131 Seroprevalence of</str
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could be partly attributed to a sma
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#146 Analysis of v
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#162 Comparison of
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#187 Comparison of
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samples from the s
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(MAA) (MAP87 and MAP3776) and 1 fro
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#196 Inter- and intra-subtype genot
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RESULTS In 601 (29%) of</st
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#211 Culture of my
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#242 Application and field validati
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#251 Diagnosis of
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Table 2. Paratuberculosis PCR resul
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#254 Programmes on Paratuberculosis
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Fig. 1. European countries specifyi
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A bulk milk quality assurance progr
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Republic of Lithua
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#276 Elimination of</strong
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other projects and
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Woodbine KA, Schukken YH, Green LE,
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Host Response and Immunology Keynot
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#33 MERKAL AWARD LECTURE No interfe
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#75 Interleukin 17 and interleukin
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#23 Role of Mycoba
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Table 1 UK and Cyprus MAP survey Re
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#228 Mycobacterium avium ssp. parat
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#145 MERKAL AWARD LECTURE Multinomi
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from their dam, se
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Epidemiology Poster Abstracts 109 1
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CONCLUSION IS1311-based nested Ma/M
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Environmental samples were collecte
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REFERENCES 1) Chiodini RJ, Van Krui
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International John
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Paratuberculosis ELISA Reliable, si
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PRIONICS AG WAGISTRASSE 27A PHONE +
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