Bovine abortion due to Bacillus cereus in Midwest Brazil

Autor: Marlon Ribeiro, David José Ferreira da Silva, Marco Túlio dos Santos Costa, Luciano Nakazato, Valéria Dutra, Marcos de Almeida Souza, Caroline Argenta Pescador
Jazyk: English<br />Portuguese
Rok vydání: 2023
Předmět:
Zdroj: Ciência Rural, Vol 53, Iss 11 (2023)
Druh dokumentu: article
ISSN: 1678-4596
0103-8478
DOI: 10.1590/0103-8478cr20220565
Popis: ABSTRACT: Bacillus cereus is a Gram-positive bacterium commonly reported in soils and plants that occupy various ecological habitats, and the main source of contamination for cattle is silage. This report described a case of fetal loss associated with B. cereus infection in a cow. An 8-month-old, Nelore female bovine fetus from a beef farm was submitted for necropsy. A gross examination revealed fibrinous pleuropneumonia and fibrin exudation on the liver surface. The morphological diagnosis was restricted to the lungs and liver. In the lungs there was fibrinosuppurative pleuropneumonia associated with numerous aggregates of rod-shaped bacteria. In the liver there was moderate focally extensive fibrinous peri hepatitis.The lungs, liver, thoracic, and abomasal fluid cultures yielded pure cultures of B. cereus, indicating that these bacteria should be recognized as a cause of bovine abortion in fetuses that macroscopically present fibrin in the abdominal and thoracic cavity.
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