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Assessment of the validity of the dairy health recording systems in the Nordic countries “DAHREVA”

Assessment of the validity of the dairy health recording systems in the Nordic countries “DAHREVA” Denmark Lind, A. 1 , Thomsen, P.T. 2 , Ersbøll, A. 1, & Houe, H. 1 Finland Oravainen, J. ..3 , Peltoniemi, O. .3 & Virtala, A.-M. 3 Norway Espetvedt M. 4 , Reksen, O. 4 & Ø sterås, O. 4

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Assessment of the validity of the dairy health recording systems in the Nordic countries “DAHREVA”

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  1. Assessment of the validity of the dairy health recording systems in the Nordic countries “DAHREVA” Denmark Lind, A.1, Thomsen, P.T.2, Ersbøll, A.1, & Houe, H.1 Finland Oravainen, J...3, Peltoniemi, O..3 &Virtala, A.-M.3 Norway Espetvedt M.4, Reksen, O.4 & Østerås, O.4 Sweden Wolff, C.5, Lindberg, A.6, Emanuelson, U.5 & Egenvall, A.5 *) E-mail: 1 University of Copenhagen, Faculty of Life Sciences, Frederiksberg, Denmark 2University of Aarhus, Faculty of Agricultural Sciences, Research Centre Foulum, Tjele, Denmark 3 University of Helsinki, Faculty of Veterinary Medicine, Finland 4 Norwegian School of Veterinary Science, Department of Production Animal Clinical Science, P.O. Box 8146 Dep NO-0033 Oslo Norway 5 Swedish University og Agricultural Science, Faculty of Veterinary Medicine and Animal Science, Uppsala Sweden 6 Swedish Veterinary Institute, Uppsala, Sweden • OBJECTIVES • Validation of the Nordic dairy health recording systems. • Comparison of the Health status betweeen the Nordic countries. • Information on changes for improving these systems to benefit animal health, welfare and food quality. BACKGROUND • Differences in the national recording systems? • Farmers’, advisors’ and veterinarians’ attitudes towards treatments and recording? • Differences in true disease incidences? Figure 1. Incidence risk of clinical mastitis throughout lactation, stratified on parity in Denmark, Finland, Norway and Sweden 1997. Relative risk comparing first parity with Sweden as a standard. N 2001 is relative risk for Norway in 2001. Valde, J.P., L.G.Lawson, A.Lindberg , J.F.Agger, H.Saloniemi & O.Østerås. 2004. Cumulative risk of bovine mastitis treatments in Denmark, Finland, Norway and Sweden. Acta vet. Scand. 45: 201-210. • APPROACH • Uniform national data collection, data shared between countries for analys. • Focus on mastitis, metabolic diseases, lameness and reproductive disorders. • Comparison of farmer disease recordings and national health database registrations. • Farmers’ and veterinarians’ attitudes to treatment and recording of disease. • Identification of data losses from disease event to database. • Comparison of true disease status between countries. • Retrival of information for an optimal common Nordic recording system.

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