TY - JOUR
T1 - Pathological and bacteriological characterization on broilers totally condemned due to colibacillosis under the control of the Federal Inspection Service
AU - Casagrande, Renata A.
AU - Machado, Gustavo
AU - Guerra, Priscila R.
AU - Castro, Luiza A.
AU - Spanamberg, Andréia
AU - Silva, Sérgio C.
AU - Cardoso, Marisa R.de Itapema
AU - Driemeier, David
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Colibacillosis is the main infectious cause of total carcass condemnation in broilers in southern Brazil. This study aims to determine the degree of agreement between the total carcass condemnation for colibacillosis in broilers slaughtered in establishments under Federal Inspection Service (SIF) with the pathological and bacteriological diagnosis. The study was conducted with 45 broilers totally condemned by colibacillosis (case) and theirs 45 respective controls (chickens without lesions). All broilers condemned had gross lesions and the controls had not. The Kappa-Cohen's test showed that these two variables had almost perfect agreement. Broilers condemned showed lesions in liver (27/45); liver and air sacs (11/45); liver and heart (2/45); liver, heart and air sacs (2/45); liver, air sacs and oviduct (1/45); liver, air sacs, heart and subcutaneous (1/45); and liver, air sacs, oviduct and spleen (1/45). There is almost perfect agreement between carcass condemnation and liver damage. Histologically, in 41 cases and 12 controls were observed lesions, the most frequent diagnoses were random necrotizing hepatitis, fibrinous-heterophilic bronchitis, acute pericarditis and lymphoplasmacytic tracheitis. In hepatitis cases was isolated Escherichia coli, Enterococcus sp. and Streptococcus sp. (10/38) and in bronchitis or bronchopneumonia E. coli and coagulase positive Staphylococcus (9/14). The polymerse chain reaction (PCR) and immunohistochemistry (IHC) tests for Mycoplasma gallisepticum and M. synoviae were negative. In cases of total carcass condemnation by Colibacillosis the liver was the main organ affected. Therefore, the condemnation criteria should be revised, suggesting conviction for hepatitis in these cases, because other bacteria can cause hepatitis, as demonstrated in this study.
AB - Colibacillosis is the main infectious cause of total carcass condemnation in broilers in southern Brazil. This study aims to determine the degree of agreement between the total carcass condemnation for colibacillosis in broilers slaughtered in establishments under Federal Inspection Service (SIF) with the pathological and bacteriological diagnosis. The study was conducted with 45 broilers totally condemned by colibacillosis (case) and theirs 45 respective controls (chickens without lesions). All broilers condemned had gross lesions and the controls had not. The Kappa-Cohen's test showed that these two variables had almost perfect agreement. Broilers condemned showed lesions in liver (27/45); liver and air sacs (11/45); liver and heart (2/45); liver, heart and air sacs (2/45); liver, air sacs and oviduct (1/45); liver, air sacs, heart and subcutaneous (1/45); and liver, air sacs, oviduct and spleen (1/45). There is almost perfect agreement between carcass condemnation and liver damage. Histologically, in 41 cases and 12 controls were observed lesions, the most frequent diagnoses were random necrotizing hepatitis, fibrinous-heterophilic bronchitis, acute pericarditis and lymphoplasmacytic tracheitis. In hepatitis cases was isolated Escherichia coli, Enterococcus sp. and Streptococcus sp. (10/38) and in bronchitis or bronchopneumonia E. coli and coagulase positive Staphylococcus (9/14). The polymerse chain reaction (PCR) and immunohistochemistry (IHC) tests for Mycoplasma gallisepticum and M. synoviae were negative. In cases of total carcass condemnation by Colibacillosis the liver was the main organ affected. Therefore, the condemnation criteria should be revised, suggesting conviction for hepatitis in these cases, because other bacteria can cause hepatitis, as demonstrated in this study.
KW - Abattoir
KW - Bacterial disease
KW - Broiler
KW - Colibacilosis
KW - Condemnation
KW - Federal Inspection
KW - Pathology
KW - Poutry
UR - http://www.scopus.com/inward/record.url?scp=85037598153&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85037598153&partnerID=8YFLogxK
U2 - 10.1590/s0100-736x2017000900009
DO - 10.1590/s0100-736x2017000900009
M3 - Article
AN - SCOPUS:85037598153
SN - 0100-736X
VL - 37
SP - 949
EP - 957
JO - Pesquisa Veterinaria Brasileira
JF - Pesquisa Veterinaria Brasileira
IS - 9
ER -