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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

EFFECT OF BACTERIAL AGENTS OF PORCINE RESPIRATORY DISEASE COMPLEX ON PRODUCTIVE INDICES AND SLAUGHTER WEIGHT

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Author(s):
Talita Brombilla [1] ; Renato Akio Ogata [2] ; Alessandra Figueiredo de Castro Nassar [3] ; Maristela Vasconcellos Cardoso [4] ; Vera Letticie de Azevedo Ruiz [5] ; Claudia Del Fava [6]
Total Authors: 6
Affiliation:
[1] Instituto Biológico. Centro de Pesquisa de Sanidade Animal - Brasil
[2] Instituto Biológico. Centro de Pesquisa de Sanidade Animal - Brasil
[3] Instituto Biológico. Centro de Pesquisa de Sanidade Animal - Brasil
[4] Instituto Biológico. Centro de Pesquisa de Sanidade Animal - Brasil
[5] USP. Faculdade de Zootecnia e Engenharia de Alimentos - Brasil
[6] Instituto Biológico. Centro de Pesquisa de Sanidade Animal - Brasil
Total Affiliations: 6
Document type: Journal article
Source: Ciênc. anim. bras.; v. 20, 2019-12-13.
Abstract

Abstract Porcine respiratory disease complex comprises the interaction of two or more infectious agents. The major bacterial agents involved were investigated in 115 finishing pigs at a farm in São Paulo State, Brazil: Actinobacillus pleuropneumoniae (serology, bacterial culture, and multiplex PCR), Mycoplasma hyopneumoniae (Mhyo) (nested PCR), Pasteurella multocida (multiplex PCR), Haemophilus parasuis (PCR multiplex), and Streptococcus sp. (bacterial culture). Macroscopic and microscopic lung lesions were evaluated, and zootechnical indices were recorded. Mhyo occurred in 113 animals (98.3%), seventeen of which were co-infected with Streptococcus sp. The finding of emphysematous lung was associated with significantly lower final and carcass weight at slaughter. Although vaccinated against Mhyo with an inactivated immunogen, almost 100% of the animals were infected. Mhyo infection with and without Streptococcus sp. co-infection was related to lung lesions of varying degrees and lower slaughter and carcass weight. (AU)

FAPESP's process: 13/07964-5 - Impact of swine pleuropneumonia in productive rates and carcass yields of fattening pigs (Sus scrofa)
Grantee:Talita Brombilla
Support Opportunities: Scholarships in Brazil - Master