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Nitrate and nitrite acute poisoning in feedlot cattle caused by ingestion of Portulaca oleracea

Nitrate and nitrite poisoning is a frequently lethal disease diagnosed in production animals due to the consumption of excessive levels in feed or water. The aim of this report was to describe an acute outbreak of nitrate and nitrite poisoning in two feedlot pens, affecting 17.5% and 5.7% of 8-month...

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Main Authors: Sosa, Emiliano, Azaldegui, Ignacio, Barale, Joaquin, Sainz Rozas, Hernan Rene, Scioli, Maria Valeria, Poo, Juan Ignacio, Lauro, Adriana Araceli, Ovelar, María Florencia, Pachiani, Martina, Garcia, Juan Agustin, Canton, German Jose
Format: info:ar-repo/semantics/artículo
Language:Inglés
Published: Springer 2025
Subjects:
Terneros
Envenenamiento
Portulaca oleracea
Muerte Súbita
Enfermedad de los Animales
Calves
Feedlots
Poisoning
Sudden Death
Animal Diseases
Feedlot
Verdolaga
Online Access:http://hdl.handle.net/20.500.12123/23056
https://link.springer.com/article/10.1007/s11250-025-04555-9
https://doi.org/10.1007/s11250-025-04555-9
Summary:Nitrate and nitrite poisoning is a frequently lethal disease diagnosed in production animals due to the consumption of excessive levels in feed or water. The aim of this report was to describe an acute outbreak of nitrate and nitrite poisoning in two feedlot pens, affecting 17.5% and 5.7% of 8-month-old calves, respectively, due to the consumption of Portulaca oleracea (“purslane”) present in the pen. No gross or histopathological findings were observed during post-mortem examination and abundant Portulaca oleracea stems were observed in the reticulo-ruminal content. High levels of nitrate were detected in P. oleracea from pens where calves died. Although nitrate poisoning is widely reported after the consumption of different forage under certain environmental situations, some weeds can accumulate potential lethal nitrate levels.

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