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Efficacy of amoxicillin in the control of a challenge with streptococcus suisvar o1 in european Sea bass fry and juveniles

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Swine

The trial concludes that Amoxicillin medicated feed (HIPRAMIX-AMOXI), at a concentration of 6 Kg/tonne (equivalent to 300 ppm of Amoxicillin) for 15 consecutive days, is efficacious to control the disease caused by a highly virulent serotype 2 S. suis strain in pigs, when challenged.

Infections caused by Streptococcus suis are considered as one of the dominant pathologies of swine. Important health issues that can affect humans must be added to the serious economic repercussions for the industry (1). Some of the bacterial components such as Capsular Polysaccharide (cps), Muramidase Released Protein (MRP), Extracellular Factor proteins (EF) and Suilysin (Sly) can be considered as virulence markers for S. suis species (3). The purpose of this study was to assess the efficacy of Amoxicillin in premix form (HIPRAMIX-AMOXI) for the treatment of pigs when challenged with a virulent serotype 2 S. suis strain.

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