Caracterização anatomopatológica e bacteriológica em frangos de corte condenados totalmente por colibacilose sob Serviço de Inspeção Federal

Casagrande, Renata Assis; Machado, Gustavo; Guerra, Priscila Regina; Castro, Luiza Amaral de; Spanamberg, Andréia; Silva, Sergio Ceroni da; Cardoso, Marisa Ribeiro de Itapema; Driemeier, David

doi:10.1590/s0100-736x2017000900009

Cited by 8 publications

(12 citation statements)

References 17 publications

(27 reference statements)

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“…The association of different predisposing factors may result in distinct clinical pictures (Barnes et al 2008, Abalaka et al 2017), during the period in which the birds died (summer), the southern region of Mozambique registered high temperatures, varying from 36 to 42°C (INAM 2018). Environmental factors, such as extreme heat, high humidity and poor ventilation, constitutes major challenges in poultry industry world widely, both for industrial and subsistence systems, since it increases bird's susceptibility to diseases, especially with an infectious origin, such as colibacillosis (Chansiripornchai 2009, Casagrande et al 2017. Escherichia coli is an avian commensal agent of the intestinal tract (Barnes et al 2008, Srinivasan et al 2014, Guabiraba & Schouler 2015, and, despite several predisposing factors were identified (high temperatures, prolonged fasting, poor ventilation), (Giovanardi et al 2005, Barnes et al 2008.…”

Section: Discussionmentioning

confidence: 99%

“…The presence of coinfections favors disease occurrence and determines the severity of the colibacillosis (Hossain et al 2015, Casagrande et al 2017, Kim et al 2020. In Mozambique, despite vaccination efforts against the main viral conditions in poultry reports of Newcastle disease, Influenza infection, infectious bronchitis, pasteurellosis and salmonellosis outbreaks are frequent (FAO 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Pulmonary involvement is relatively common in E. coli infections, and it results from inhalation of bacteria disseminated through direct contact between sick or asymptomatic animals (Horn et al 2012), as well as through high levels of ammonium or through coinfections by Mycoplasma spp., infectious bronchitis virus, pneumovirus, and Newcastle virus (Barnes et al 2008, Dwars et al 2009, Casagrande et al 2017. These agents are related to necrotic lesions of the respiratory epithelium and later bacterial colonization, being bacterial inhalation one of the main forms of air sacs infection in susceptible birds independently of the age (Barnes et al 2008).…”

Section: Discussionmentioning

confidence: 99%

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Pathological, microbiological and immunohistochemical characterization of avian colibacillosis in broiler chickens of Mozambique

et al. 2021

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Avian colibacillosis is an acute and globally occurring infectious disease of domestic and wild birds caused by Escherichia coli, and it is associated with considerable economic losses mainly due to the morbidity and mortality associated. The present study aimed to describe the pathological, bacteriological and immunohistochemical aspects of avian colibacillosis in broiler chickens of Mozambique. Forty-nine broiler chicken presented anorexia, decreased weight gain, ataxia, diarrhea, dyspnea, and death in a clinical course of 3-5 days. The birds were raised in five farms (small, medium and large farms) with manual and automatic breeding system, with flocks ranging from 100 to 20,000 birds. At the necropsy, all birds had poor body condition, and the pericardium and the Glisson’s capsule of all avian exhibited different degrees of adherence often associated with severe fibrin deposition. The thoracic and abdominal air sacs were thickened and adhered to the costal wall. Mild, moderate or marked hepatomegaly associated with white pinpoint multifocal areas (100%, 49/49) and mild to moderate splenomegaly in 75.5% (37/49) with a mottled surface were observed. The lungs and kidney were enlarged and reddish. Histologically, a multiorgan fibrinoheterophilic polyserositis was observed in 75.5% of the cases (37/49), which were characterized by inflammatory infiltrates composed mainly of degenerative heterophils, macrophages and plasma cells, associated with fibrin deposits and intermixed by coccobacillary bacterial basophilic aggregates. These affected mainly the pericardium (28.6%, 14/49), the pleura (18.4%, 9/49), the Glisson’s capsule (10.2%, 5/49), the ventriculus (10.2, 5/33), and the proventriculus (8.2%, 4/49) serosa. Multifocal to coalescing areas of coagulative necrosis associated with similar inflammatory cells were observed mainly in the spleen (28.6%, 14/49), liver (24.5%, 12/49), and intestines (22.4%, 11/49). A similar infiltrate was also observed affecting the the lungs (16.3%, 8/49), the kidney (16.3%, 8/49) and the myocardium (14.3%, 7/49). Isolation and identification of E. coli was obtained in 12 cases through bacterial culture. Some organs (2 cases of each farms) were selected and submitted to immunohistochemistry anti-E. coli, and a positive stain was observed in all tested cases in liver (3/3), heart (4/4), spleen (1/1), lungs (4/4), intestines (4/4), bursa of Fabricius (1/1), ventriculus (1/1), and proventriculus (1/1) tissue sections. These results demonstrate that E. coli was the cause of mortality in these birds. Therefore, biosecurity and management measures should be employed to prevent and control the disease occurrence in Mozambique’s poultry farming.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Pathological, microbiological and immunohistochemical characterization of avian colibacillosis in broiler chickens of Mozambique

et al. 2021

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“…Colibacillosis, a disease caused by E. coli, present in the gastrointestinal tract of broilers, can cross the intestinal barrier and reach other organs, beginning an respiratory infection, and can also cause septicemia with colonization of internal organs (Casagrande et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Origin of broiler carcass condemnations

et al. 2019

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The objective of the present research was to study the incidence of broiler carcass condemnations over eleven years and identify the productive phase that causes greater loss in slaughter process. The origin of these condemnations was determined before and after fasting. Evaluated broilers were reared in positive pressure warehouses and slaughtered between 28 and 34 days old with carcass weight ranging from 0.7 to 1.4 kg. Fasting occurred, on average, 9 h before the slaughter. Condemnation and slaughter data were collected from 2004 to 2014 in a slaughterhouse with slaughter capacity of 120,000 broilers/day. The causes of rearing condemnations were airsaccullitis, arthritis, abscess, ascites, cachexia, cellulitis, colibacillosis, dermatosis, salpingitis, hemorrhagic syndrome, and neoplasia; and the causes of pre-slaughter and slaughter condemnations were bruising, fracture, inadequate bleeding, excessive scaling, contamination, dehydration, death at the platform, disgusting appearance, and delayed evisceration. The mean values of total and partial condemnations per year, occurrence and proportion of condemnations index (OCI) for every thousand broilers slaughtered, and rates of pre and post-fasting condemnations were calculated. Condemnations rates (%) and OCI were higher after fasting; partial and total contamination stood out, with a frequency of 77% and 30%, respectively, after fasting. Long fasting, uneven lots or unbalanced equipment may cause extravasation of the gastrointestinal contents and contaminate broiler carcasses. Practices such as monitoring fasting and equipment adjustment to broiler carcass size may reduce carcass condemnation incidence.

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“…No Brasil, estudos têm correlacionado as lesões macroscópicas de causa infeciosas e a caracterização histológica com o isolamento do agente presente nos órgãos afetados. Tais pesquisas têm fundamental importância para avaliação do impacto dos agentes infecciosos como causa de condenação da produção em abatedouros de frango de corte 20 .…”

Section: Introductionunclassified

Isolamento De Enterobactérias a Partir De Frangos De Corte Necropsiados: Relato De Caso

Duarte

Santana

2019

COLLOQ VITAE

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The pathogenic bacterium Escherichia coli(E. coli) causehealth problems to production animals, i.e.avian colibacillosis. This disease presents multifactorial causes,manifestingchronic respiratory disease, omphalitis, salpingitis, septicemia, peritonitis, swollen head syndrome, enteritis,and cellulitis. Thepresent study aimed to report clinical findings of three birds from a breeder at Primavera do Leste,MT, Brazil, necropsied to the anatomopathological analysis and isolation of the causative agents. The analysis identified hepatic necrosis, presence of catarrhal secretion to the medial portion of trachea, and cellulitis with evolution to abscess. Microbiological tests resulted to the isolation of lactose-fermentiveGram-negative bacteria, characterizedasenterobacteria, i.e.E. coli.

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Caracterização anatomopatológica e bacteriológica em frangos de corte condenados totalmente por colibacilose sob Serviço de Inspeção Federal

Cited by 8 publications

References 17 publications

Pathological, microbiological and immunohistochemical characterization of avian colibacillosis in broiler chickens of Mozambique

Pathological, microbiological and immunohistochemical characterization of avian colibacillosis in broiler chickens of Mozambique

Origin of broiler carcass condemnations

Isolamento De Enterobactérias a Partir De Frangos De Corte Necropsiados: Relato De Caso

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