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Detection of enteric pathogens in Turkey flocks affected with severe enteritis, in Brazil

Published on Aug 1, 2014in Tropical Animal Health and Production1.089
· DOI :10.1007/s11250-014-0612-7
Joelma Moura-Alvarez2
Estimated H-index: 2
(USP: University of São Paulo),
Luis Fabian N Nuñez5
Estimated H-index: 5
(USP: University of São Paulo)
+ 5 AuthorsAntonio José Piantino Ferreira24
Estimated H-index: 24
(USP: University of São Paulo)
Abstract
Twenty-two flocks of turkeys affected by enteric problems, with ages between 10 and 104 days and located in the Southern region of Brazil, were surveyed for turkey by PCR for turkey astrovirus type 2 (TAstV-2), turkey coronavirus (TCoV), hemorrhagic enteritis virus (HEV), rotavirus, reovirus, Salmonella spp., and Lawsonia intracellularis (Li) infections. Eleven profiles of pathogen combination were observed. The most frequently encountered pathogen combinations were TCoV-Li, followed by TCoV-TAstV-2-Li, TCoV-TastV-2. Only TCoV was detected as the sole pathogen in three flocks. Eight and 19 flocks of the 22 were positive for TAstV-2 and TCoV, respectively. Six were positive for Salmonella spp. and L. intracellularis was detected in 12 turkey flocks. Reovirus and HEV were not detected in this survey. These results throw new light on the multiple etiology of enteritis in turkeys. The implications of these findings and their correlation with the clinical signs are comprehensively discussed, illustrating the complexity of the enteric diseases.
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