Baccharis megapotamica var. weirii poisoning in water buffalo (Bubalus bubalis)

Oliveira-Filho, J. C.; Carmo, P. M. S.; Lucena, Ricardo Barbosa; Pierezan, Felipe; Barros, Claudio S.L.

doi:10.1177/1040638711403435

Cited by 12 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this region, a large amount of Baccharis megapotamica (Anjos 2018, personal communication) has also been observed, with clinical signs and lesions similar to those seen with B. coridifolia poisoning (Oliveira-Filho et al 2011, Panziera et al 2015. However, on the properties where the outbreaks occurred in this study, this plant was not found.…”

Section: Discussionsupporting

confidence: 49%

Gastric disorders of cattle in western Rio Grande do Sul State, Brazil

et al. 2020

View full text Add to dashboard Cite

A retrospective study of gastric disorders in autopsied cattle in the Western region of Rio Grande do Sul State, was performed. The exam reports of bovine necropsy of the Veterinary Pathology Laboratory, Unipampa, were analyzed in the period from 2010 to 2018. All cases in which death was primarily caused by disturbance in the gastric chambers were included. During the period evaluated, 141 cattle were necropsied. Of those, 25 had gastric disorders. Of those, 53% had alterations in the rumen, followed by abomasum (17%), involvement of two chambers (13%) and reticulum (9%). Most cases corresponded to beef cattle raised in an extensive system and most them for calf production and fattening with an average age of approximately three years. The cases occurred in farms of four different municipalities. Bullous bloat by excessive Trifolium repens ingestion was the gastric disturbance with the highest number of dead cattle observed in this study, especially in irrigated áreas of livestock farms. Cases such as lactic acidosis, ruminal alkalosis due to excessive urea ingestion and Baccharis coridifolia poisoning were also important gastric disturbances in necropsied cattle, associated especially with poor management and period of scarcity of good quality fodder. Cases of Clostridium perfringens infection were also observed in young cattle suggesting that it is an important infectious agent in the evaluated cattle herds, also showing failures in vaccination of the herds. As observed, gastric disturbances in cattle in the western region of Rio Grande do Sul have several causes. Metabolic/toxic and infectious disturbances were important causes of mortality in the herds, inducing considerable economic losses. Based on this study, it is clear that the majority of outbreaks or isolated cases occurred due to errors in the management of the properties and the vast majority of them could have been avoided with improvements in the technical qualification of the workers and simple adjustments in the farming methods. It is also emphasized the importance of the conclusive diagnosis to control these disorders, once after the orientation to the producers, was observed significant decrease in cattle losses in the farms.

show abstract

Section: Discussionsupporting

confidence: 49%

Gastric disorders of cattle in western Rio Grande do Sul State, Brazil

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Sob condições naturais há relatos de intoxicações pela var. weirii em bovinos (Tokarnia et al 1992, Driemeier et al 2000, ovinos (Pedroso et al 2010) e bubalinos (Oliveira-Filho et al 2011), e em condições experimentais há casos de intoxicação com ambas as variedades em bovinos, ovinos, coelhos (Tokarnia et al 2012) e bubalinos (Oliveira-Filho et al 2012). Na espécie caprina são descritos na literatura apenas casos de intoxicação experimental pela variedade weirii, no qual se verificou que a dose letal era a partir de 2g/Kg da planta fresca (Barbosa et al 1994).…”

unclassified

Intoxicação natural por Baccharis megapotamica var.weirii em caprinos

et al. 2015

View full text Add to dashboard Cite

Poisoning by the toxic species of Baccharis is an important cause of death in farm animals. Baccharis coridifolia and Baccharis megapotamica are the most common and most important of this genus. Epidemiological, clinical and pathological aspects of a natural outbreak of intoxication by Baccharis megapotamica var. weirii are described in goats. Eleven young goats from a herd of 152 goats were affected by an acute fatal disease. The cases occurred in a small farm in the municipality of Viamão, State of Rio Grande do Sul, southern Brazil. Large patches of blooming Baccharis megapotamica var. weirii were observed in the pastures where the goats were held, especially in wet and flooded spots. Affected goats were between six months to one year old and all showed signs including apathy, anorexia, weakness, diarrhea, dehydration, abdominal pain, bloat, decubitus and death. The clinical course was 12-24 hours. Three out of the eleven goats dead from the toxicosis were necropsied. Changes present in all necropsied goats included dehydration, liquid contents in the rumen, reddening, erosions and ulcers in the mucosae of the forestomachs, abomasum, and intestine. One goat had marked hemorrhage of mesenteric lymph nodes. Histological lesions of all animals included hyperemia as well as degenerative, necrotic, and ulcerative changes in the epithelial lining of rumen, reticulum, and omasum. Mucosae of the abomasum and of some sections of small and large intestines were also affected. Necrosis of lymphoid tissue was observed in mesenteric lymph nodes and in the lymphoid aggregates in intestine and in the follicles of spleen.INDEX TERMS: Poisonous plants, Baccharis megapotamica var. weirii, plant poisoning, diseases of goats, pathology, gastrointestinal tract.

show abstract

“…weirii was reported in water buffaloes of Brazil. The hepatic injuries that arisen from this toxicity were severe hepatocellular vacuolization with eosinophilic globules (councilman bodies) and clear lymphatic dilation in the portal areas (28). The hemorrhage abundance in the current study was 28.6% in confiscated livers (table 2).…”

Section: Discussionmentioning

confidence: 43%

Pathology and prevalence of hepatic lesions of Azeri buffaloes (bubalus bubalis) slaughtered at Urmia Abattoir, Northwest Iran

Alizadeh

Amniattalab

2020

JFSH

View full text Add to dashboard Cite

This study was carried out for the evaluation of the prevalence rate and the pathology of various lesions in the confiscated livers of slaughtered Azeri buffaloes at Urmia Abattoir, Northwest Iran. Livers of 306 Azeri buffaloes were inspected grossly during five months according to their color and consistency changes in Urmia Abattoir. Among the inspected carcasses, livers of 28 buffaloes had various lesions. The collected tissue samples of confiscated livers were placed in 10% buffered formalin as a fixative solution in order to prepare pathologic sections with a thickness of 6 μm. The sections were stained by haematoxylin and eosin (H&E) and periodic acid schiff (PAS) methods. The most common pathologic changes in the confiscated buffalo livers were fatty change (46.4%), hepatitis and cholangitis (42.9%), and bile duct hyperplasia (39.3%) respectively. The results of this study have shown that there was a significant difference (p<0.05) between hepatic congestion and sex. In addition, there was no significant difference (p>0.05) between hepatic lesions and age. The results of this study have revealed that fascioliasis has an important role in the creation of some hepatic lesions such as bile duct hyperplasia, fatty change, and hepatitis in buffaloes. Since various hepatic lesions can reduce buffalo productions and has negative influence on animal reproduction, it is necessary to pay more attention to accurate performing of antiparasitic program and the evaluation of possible role of poisonous plants, heavy metals, and mycotoxins in the generation of hepatic lesions of buffaloes.

show abstract

Baccharis megapotamica var. weirii poisoning in water buffalo (Bubalus bubalis)

Cited by 12 publications

References 20 publications

Gastric disorders of cattle in western Rio Grande do Sul State, Brazil

Gastric disorders of cattle in western Rio Grande do Sul State, Brazil

Intoxicação natural por Baccharis megapotamica var.weirii em caprinos

Pathology and prevalence of hepatic lesions of Azeri buffaloes (bubalus bubalis) slaughtered at Urmia Abattoir, Northwest Iran

Contact Info

Product

Resources

About