Vol 169: Use of an avirulent live Salmonella Choleraesuis vaccine to reduce the prevalence of Salmonella carrier pigs at slaughter.Reportar como inadecuado



 Vol 169: Use of an avirulent live Salmonella Choleraesuis vaccine to reduce the prevalence of Salmonella carrier pigs at slaughter.


Vol 169: Use of an avirulent live Salmonella Choleraesuis vaccine to reduce the prevalence of Salmonella carrier pigs at slaughter. - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

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This article is from The Veterinary Record, volume 169.AbstractThis study evaluated the use of an avirulent live Salmonella Choleraesuis vaccine to reduce the seroprevalence and number of Salmonella carrier pigs at slaughter. Seven batches of 500 pigs were included in each of the two study groups: the vaccinated group VG that was orally vaccinated and the control group CG that received a placebo on the first day of life. The groups were managed in a three-site system and followed up from birth to slaughter. Blood samples n=378 were collected from each VG and CG to monitor the on-farm seroprevalence in both groups. Mesenteric lymph nodes and blood from animals n=390 belonging to each group were collected at slaughter. At the first day of life, the seroprevalence in control batches ranged from 77.9 to 96.3 per cent, while in vaccinated batches, it ranged from 66.6 to 92.6 per cent. At weaning 21 days of age, the number of seropositives decreased in both groups mean of 12 and 3.7 per cent for CG and VG, respectively. At slaughter, batches of VG had a significantly P



Autor: Schwarz, P.; Kich, J. D.; Kolb, J.; Cardoso, M.

Fuente: https://archive.org/







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