| Autor: |
Menegatt JCO; Setor de Patologia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil., Perosa FF; Setor de Patologia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil., Gris AH; Setor de Patologia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil., Piva MM; Setor de Patologia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil., Serena GC; Setor de Patologia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil., Bordignon DL; Cargill Alimentos Ltd.a., Av. José Bonifácio Coutinho Nogueira, 150, Campinas 13091-611, SP, Brazil., Reck C; VERTÀ Laboratórios, Instituto de Pesquisa e Diagnóstico Veterinário, Av. Lions, 1380-Nossa Senhora Aparecida, Curitibanos 89520-000, SC, Brazil., Menin Á; VERTÀ Laboratórios, Instituto de Pesquisa e Diagnóstico Veterinário, Av. Lions, 1380-Nossa Senhora Aparecida, Curitibanos 89520-000, SC, Brazil.; Departamento de Biociências e Saúde Única, Universidade Federal de Santa Catarina, R. Germano A. Souza, Curitibanos 89520-000, SC, Brazil., Watanabe TTN; Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA.; Antech Diagnostics, West Olympic Blvd, Los Angeles, CA 90064, USA., Driemeier D; Setor de Patologia Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Porto Alegre 91540-000, RS, Brazil. |
| Abstrakt: |
Necropsies can reveal herd problems or comorbidities that can lead to management corrections, improvements in animal performance, and better decision making. Furthermore, the pattern and causes of mortality might differ when different systems are evaluated. The present study was conducted to establish the main causes of death in nursery pigs from different systems in Brazil, as well as the clinical, microbiological, and pathological aspects of these mortalities. Eighteen nurseries were analyzed (a total of 120,243 housed piglets), and 557 necropsies were performed. Streptococcus suis infection was the most prevalent cause of death (21.2%), followed by bacterial polyserositis (16.7%), chronic atrophic enteritis (13.5%), salmonellosis (8.8%), pneumonia (8.6%), and colibacillosis (6.1%). The increase in mortality rate in individual nurseries and, consequently, in the diagnoses was commonly associated with disease outbreaks. Infectious diseases constituted the largest portion of the diagnoses, making a great opportunity for improving production rates in herds. Moreover, the extensive range of observed diagnoses highlights the importance of conducting preliminary diagnostic investigations based on necropsy to determine the causes of death. This approach allows for the direction of complementary tests, which can diagnose agents with greater specificity. As a result, this allows for the implementation of more effective prevention and control strategies. |
