Mots-clé
(Allemand)
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Integrierte Produktionssysteme, biologische Milchproduktion, biologische Milchprodukte, Gesundheits-Herdenmanagement
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Mots-clé
(Anglais)
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integratet production systems, organic dairy farms, organic dairy products, animal-health management,
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Description succincte
(Allemand)
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The goal of the overall project is to compare cows held in organic and conventional Swiss dairy farms, with respect to nutritional status, halth status, reproductive performance, milk production, milk composition, frequency of mastitis, antibiotic resistance of bacteria isolated from infected mammary glands, and presence of verotoxin-producing E. coli in fecal samples.
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Description succincte
(Anglais)
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The goal of
the overall project is to compare cows held in organic and
conventional Swiss dairy farms, with respect to nutritional status,
halth status, reproductive performance, milk production, milk
composition, frequency of mastitis, antibiotic resistance of
bacteria isolated from infected mammary glands, and presence of
verotoxin-producing E. coli in fecal samples.
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Objectifs du projet
(Anglais)
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It is proposed an additional epidemiological investigation on cows held in organic as compared with cows held in conventional farms in the cantons of BE, FR, NE, SO and LU. The primary goal is to test the hypothesis that cows held in certified organic dairy herds differ from those held in conventional farms not only with respect to nutrients fed and nutritional management, but also with respect to nutritional status, health status, reproductive performance, milk production, milk composition, frequency of mastitis, antibiotica resistance of bacteria isolated from infected mammary glands, and presence of VETC in fecal samples and possibily in milk.
Variables to be measured: Nutrition and nutritional status, health status, production of milk and reproduction.
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Mise en oeuvre et application
(Anglais)
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cf Arbeitsvorgang / Stand der Arbeiten
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Connaissances nouvelles/Littérature
(Anglais)
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Busato A., P. Trachsel, M. Schällibaum and J.W. Blum: Udder health and risk factors of subclinical mastitis in organic dairy farms in Switzerland. Prevent. Vet. Med.44 (2000) 205-220
Busato A., Trachsel P., Blum J.W. (2000b): Frequency of Traumatic Cow Injuries in Relation with Housing Systems in Swiss Organic Dairy Herds. J Vet Med A 47 (2000) 221-229
Trachsel P., Busato A., Blum J.W.: Body condition scores of dairy cattle in organic farms. J. Anim. Physiol. a. Anim. Nutr. 84 (2000) 112-124
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Procédure/Etat des travaux
(Anglais)
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Project began in November 2001. Surveys have been finished in summer 2003. Several publications are prepared. Informations: www.itz.vetsuisse.unibe.ch/
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