Banca de DEFESA: NILSON ROCHA FILHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : NILSON ROCHA FILHO
DATA : 31/10/2018
HORA: 14:00
LOCAL: Auditório Embrapa Suínos e Aves
TÍTULO:

Bacteriological evaluation of chronic pleuritis in swines’ slaughter

PALAVRAS-CHAVES:

Pleurisy, convictions, slaughterhouse, chronic lesions, bacteriology

PÁGINAS: 53
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
SUBÁREA: Medicina Veterinária Preventiva
ESPECIALIDADE: Saúde Animal (Programas Sanitários)
RESUMO:

Pleuritis are among the main causes of deviations of pig carcasses from the Department of Final Inspection (DIF) in pigs’ slaughterhouses. The carcasses diverted to DIF receive an NE stamp that makes it impossible to export, which causes significant losses to the slaughterhouses. Most of the pleura lesions found at slaughter are sequels of bacterial infections. Pleuritis may or may not be accompanied by pneumonic lesions that may be associated with different bacteria such as Pasteurella multocida A and D (PmA and PmD), Actinobacillus pleuropneumoniae (App), Actinobacillus suis, Haemophilus parasuis (Hps) and Streptococcus suis (S.suis). The objective of this study was the bacteriological and histological evaluation of the chronic and subacute lesions of pleuritis in a slaughterhouse located in the South of Brazil, with the intention of verifying whether there is or there is not the presence of viable agents in these lesions to subsidize the inspection agents concerning the criteria of inspection. A cross - sectional study was developed in a pig’s slaughterhouse with daily slaughter capacity of 4400 animals. Pleuritis were visually classified regarding the evolutionary stage as chronic pleuritis when there was firm adherence of the lung to the ribcage, with no evidence of exudation in the lesion. In total, 100 carcasses were analyzed, 50 with chronic pleuritis lesions with adjacent lung lesions and 50 with chronic lesions without pulmonary lesion. There was no bacterial isolation from the pleura swab independent of the presence of adjacent lung injury, evidencing the absence of bacteria in the adhesions between the parietal and visceral pleura. On the other hand, there was bacterial isolation of the pulmonary lesion in 37/50 (74%), and the isolated agents were: PmA (21 samples); PmD (06 samples); S. suis (02 samples); App (02 samples); PmA + S. suis (04 samples); App + S. suis (01 sample); A. suis (01 sample). The absence of viable bacteria in the chronic lesions of firm adherence between the pleura, regardless of lung injury, in pigs with no other repercussion in the carcass, supports the macroscopic evaluation as a reliable tool for the decision on the fate of the carcass at the time of inspection. The positive bacterial isolation in 74% of lung lesions indicates that in these chronic lesions the bacterial agents are restricted to the lung, even in the presence of adjacent lung injury to the injured pleura.

MEMBROS DA BANCA:
Interno - 1756086 - DIOGENES DEZEN
Externo à Instituição - GERALDO CAMILO ALBERTON
Presidente - 564.081.370-91 - JALUSA DEON KICH - EMBRAPA
Externo à Instituição - NELSON MORÉS