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Bovine respiratory disease complex associated mortality and morbidity rates in feedlot cattle from southeastern Brazil.
Baptista, Anderson Lopes; Rezende, Amanda Lima; Fonseca, Pedro de Almeida; Massi, Rodrigo Pelisson; Nogueira, Geison Morel; Magalhães, Layane Queiroz; Headley, Selwyn Arlington; Menezes, Guilherme Lobato; Alfieri, Amauri Alcindo; Saut, João Paulo Elsen.
Afiliação
  • Baptista AL; Universidade Federal de Uberlândia, Minas Gerais, Brazil. anderson.lopes@acproteina.com.br.
  • Rezende AL; Universidade Federal de Uberlândia, Minas Gerais, Brazil. amanda_rezende@hotmail.com.
  • Fonseca PA; Universidade Federal de Uberlândia, Minas Gerais, Brazil. pedro.fonseca@acproteina.com.br.
  • Massi RP; Universidade Estadual de Londrina, Paraná, Brazil. rodrigo.veterinaria@hotmail.com.
  • Nogueira GM; Universidade Federal de Uberlândia, Minas Gerais, Brazil. gmorelnogueira@gmail.com.
  • Magalhães LQ; Universidade Federal de Uberlândia, Minas Gerais, Brazil. layanequeirozmagalhaes@gmail.com.
  • Headley SA; Universidade Estadual de Londrina, Paraná, Brazil. selwyn.headley@uel.br.
  • Menezes GL; Universidade Federal de Uberlândia, Minas Gerais, Brazil. guilherme.menezes@acproteina.com.br.
  • Alfieri AA; Universidade Estadual de Londrina, Paraná, Brazil. alfieri@uel.br.
  • Saut JPE; Universidade Federal de Uberlândia, Minas Gerais, Brazil. jpsaut@famev.ufu.br.
J Infect Dev Ctries ; 11(10): 791-799, 2017 Oct 31.
Article em En | MEDLINE | ID: mdl-31600152
INTRODUCTION: A feedlot is an intensive farming system for finishing livestock. Bovine respiratory disease (BRD) is a cause of morbidity and mortality in beef cattle, especially in feedlots. METHODOLOGY: This study investigated the morbidity and mortality of BRD in a beef cattle feedlot in southeastern Brazil using: clinical diagnoses, therapy, morbidity, and mortality. Pulmonary fragments were collected from five steers, on feed from 3-32 days, with lesions of pneumonia for identification of BRD infectious agents PCR. RESULTS: 188,862 steers were on feed and morbidity was 7.05% (13,315/188,862), mortality 0.64% (1,214/188,862). The causes of morbidity were: BRD (6.13%), lameness (0.29%), trauma (0.21%), clostridiosis (0.13%) and polioencephalomalacia, PEM (0.12%). The causes of mortality were: BRD (0.21%), trauma (0.17%), and clostridiosis (0.13%). When all sick cattle were considered (n=13,315), BRD (86.9%) was the principal cause of morbidity, followed by lameness (4.13%), trauma (3.05%), and clostridiosis (1.82%). The cost of BRD-associated cattle mortality and morbidity was estimated at $14,334.00/10,000 and $16,315.40/10,000 respectively. It was projected that the economic effects due to BRD-associated morbidity in Brazil were $6.31 million/annum, while losses due to mortality were $5.54 million, resulting in an annual loss of $11.85 million. Coinfections in cattle with pneumonia due to Mannheimia haemolytica and Pasteurella multocida were identified in 4/5 steers tested. CONCLUSIONS: This is the first longitudinal study that investigated the incidence of BRD in feedlot cattle from Brazil, and the results herein described indicate that BRD contributed significantly to the development of mortality and morbidity of cattle on feed.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Observational_studies / Risk_factors_studies País/Região como assunto: America do sul / Brasil Idioma: En Revista: J Infect Dev Ctries Assunto da revista: DOENCAS TRANSMISSIVEIS Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Itália

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Observational_studies / Risk_factors_studies País/Região como assunto: America do sul / Brasil Idioma: En Revista: J Infect Dev Ctries Assunto da revista: DOENCAS TRANSMISSIVEIS Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Itália