Importância econômica, epidemiologia e controle das intoxicações por plantas no Brasil

Pessoa, Clarice R.M.; Medeiros, Rosane M.T.; Riet-Correa, Franklin

doi:10.1590/s0100-736x2013000600011

Cited by 61 publications

(73 citation statements)

References 31 publications

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“…GREGG et al (1998) reported the reduction of clinical signs of intoxication by MFA in sheep intraruminally inoculated with the bacterium Butyrivibrio fibrisolvens, genetically modified with a gene derived from a species of Moraxella, encoding a dehalogenase. Studies of our research group reported partial induction of resistance to poisoning by A. septentrionalis in six goats after intraruminal inoculation of A. dichloromethanicus and P. kullae (PESSOA, 2014). Two of these goats were used as donors of rumen contents in this research; they had received the bacteria and subsequently A. septentrionalis, presenting mild clinical signs of intoxication after eight days of ingesting daily doses of 5g kg -1 of the same plant used in this experiment.…”

Section: Discussionmentioning

confidence: 99%

“…In these two goats, the resistance had previously been induced by daily oral administration for 10 days of a 60ml solution containing A. dichloromethanicus and P. kullae, diluted to 1 on the McFarland scale. After the tenth day of inoculation, the goats started to ingest daily doses of 5g kg -1 body weight of green leaves of A. septentrionalis for an 8-day period (PESSOA, 2014).…”

Section: Methodsmentioning

confidence: 99%

“…Palicourea spp. and Arrabidaea spp., are responsible for causing approximately 500.000 cattle deaths per year in Brazil (PESSOA et al, 2013).…”

Section: Amorimiamentioning

confidence: 99%

“…and inactivate this toxic compound (PESSOA et al, 2013). CAMBOIM et al (2012a) isolated two aerobic MFA-degrading bacteria, Ancylobacter dichloromethanicus and Pigmentiphaga kullae, from the rumen content of goats and recent studies demonstrated an increased resistance to poisoning by MFA-containing plants in goats inoculated with these bacteria (PESSOA, 2014).…”

Section: Pathologymentioning

confidence: 99%

“…CAMBOIM et al (2012a) isolated two aerobic MFA-degrading bacteria, Ancylobacter dichloromethanicus and Pigmentiphaga kullae, from the rumen content of goats and recent studies demonstrated an increased resistance to poisoning by MFA-containing plants in goats inoculated with these bacteria (PESSOA, 2014). Administration of small quantities of fresh leaves of Palicourea aeneofusca (OLIVEIRA et al, 2013) and A. septentrionalis (DUARTE et al, 2014) also induce partial resistance to poisoning by MFA in goats, suggesting that MFAdegrading bacteria may be normal inhabitants of the ruminal flora and that the ingestion of this substrate stimulates their multiplication (CAMBOIM et al, 2012b).…”

Section: Pathologymentioning

confidence: 99%

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Resistance transferance of Amorimia septentrionalis poisoning in goats by ruminal transferance fluid from goats with induced resistance by the inoculation of sodium monofluoroacetate-degrading bacteria

et al. 2015

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Palicourea spp. and Arrabidaea spp., are responsible for causing approximately 500.000 cattle deaths per year in Brazil (PESSOA et al, 2013).…”

Section: Amorimiamentioning

confidence: 99%

Section: Pathologymentioning

confidence: 99%

Section: Pathologymentioning

confidence: 99%

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Resistance transferance of Amorimia septentrionalis poisoning in goats by ruminal transferance fluid from goats with induced resistance by the inoculation of sodium monofluoroacetate-degrading bacteria

et al. 2015

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A volatolomic approach using cerumen as biofluid to diagnose bovine intoxication by Stryphnodendron rotundifolium

Barbosa

Rodrigues

David

et al. 2020

Biomedical Chromatography

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An innovative volatolomic approach employs the detection of biomarkers present in cerumen (earwax) to identify cattle intoxication by Stryphnodendron rotundifolium Mart., Fabaceae (popularly known as barbatimão). S. rotundifolium is a poisonous plant with the toxic compound undefined and widely distributed throughout the Brazilian territory. Cerumen samples from cattle of two local Brazilian breeds ('Curraleiro Pé-Duro' and 'Pantaneiro') were collected during an experimental intoxication protocol and analyzed using headspace (HS)/GC-MS followed by multivariate analysis (genetic algorithm for a partial least squares, cluster analysis, and classification and regression trees). A total of 106 volatile organic metabolites were identified in the cerumen samples of bovines. The intoxication by S. rotundifolium influenced the cerumen volatolomic profile of the bovines throughout the intoxication protocol. In this way, it was possible to detect biomarkers for cattle intoxication. Among the biomarkers, 2-octyldecanol and 9-tetradecen-1-ol were able to discriminate all samples between intoxicated and nonintoxicated bovines. The cattle intoxication diagnosis by S. rotundifolium was accomplished by applying the cerumen analysis using HS/GC-MS, in an easy, accurate, and noninvasive way. Thus, the proposed bioanalytical chromatography protocol is a useful tool in veterinary applications to determine this kind of intoxication. K E Y W O R D S biomarkers, classification and regression trees, cluster analysis, genetic algorithm for a partial least squares, HS/GC-MS, volatile organic metabolites 1 | INTRODUCTION Livestock farming is one of the most important economic activities around the world. According to the United States Department of Agriculture, the cattle stocks in 2019 were 1.002 billion head (USDA, 2019). Due to this enormous number of animals, there is an immediate requirement for veterinary biomedical procedures to develop new analytical methods that can ensure the welfare and health of the animals. Thus, these new analytical methods aim at avoiding economic losses due to animal deaths by disorders and intoxication, as well as the spread of diseases that can affect humans by secondary contamination due to

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Performance of sheep grazing in pastures of Brachiaria decumbens, Brachiaria brizantha, Panicum maximum, and Andropogon gayanus with different protodioscin concentrations

Gracindo¹,

Louvandini²,

Riet-Correa

et al. 2014

Trop Anim Health Prod

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Brachiaria spp. are the most important grasses for ruminants in central-western Brazil. However, the use of these pastures is limited by their toxicity due to steroidal saponins. This experiment was conducted for 60 days to demonstrate the resistance of sheep raised on Brachiaria spp. pastures to steroidal saponin poisoning. The experiment was composed by 48 animals randomly divided into four groups (n = 12). Among them, 32 4- to 5-month-old castrated male crossbred Santa Inês sheep, originating from flocks that had been grazing on Brachiaria spp. for more than three consecutive years, and 16 were non-adapted (naïve) sheep from flocks that never had prior contact with pastures of Brachiaria spp. were randomly divided into four groups. Each of the four experimental groups was composed by eight adapted and four non-adapted animals. The four experimental groups were introduced into paddocks, each of which contained a single grass: either Brachiaria decumbens, Brachiaria brizantha, Panicum maximum, or Andropogon gayanus. The addition of the naïve sheep to the groups was designed to detect pastures' toxicity to naïve sheep and to adjust the stocking rate to optimize the use of forage. The weight gains of sheep grazing on B. decumbens, B. brizantha, and P. maximum were similar; however, the A. gayanus group showed lower weight gains compared with the other groups (P < 0.05). The mean serum activities of γ-glutamyltransferase in the sheep grazing on B. decumbens were higher than those in the sheep from the other groups. No significant differences among the groups were found in aspartate aminotransferase, creatinine, albumin, or total protein serum concentrations. No clinical signs were observed in the adapted sheep in any of the pastures. Of the four non-adapted sheep introduced into the B. decumbens pasture, two showed clinical signs of steroidal saponin poisoning, and one died. No clinical signs were observed in the non-adapted sheep in the other pastures. The saponin (protodioscin) concentrations in the pastures varied from 3.3 to 12.2 g/kg DM in B. decumbens, from 2.8 to 9.1 g/kg DM in B. brizantha, and from 1 to 1.5 g/kg DM in A. gayanus. No saponins were found in P. maximum. It is concluded that sheep from flocks reared in pastures of B. decumbens and B. brizantha were resistant to steroidal saponin poisoning and showed similar weight gains to those of sheep grazing in other tropical pastures.

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Importância econômica, epidemiologia e controle das intoxicações por plantas no Brasil

Cited by 61 publications

References 31 publications

Resistance transferance of Amorimia septentrionalis poisoning in goats by ruminal transferance fluid from goats with induced resistance by the inoculation of sodium monofluoroacetate-degrading bacteria

Resistance transferance of Amorimia septentrionalis poisoning in goats by ruminal transferance fluid from goats with induced resistance by the inoculation of sodium monofluoroacetate-degrading bacteria

A volatolomic approach using cerumen as biofluid to diagnose bovine intoxication by Stryphnodendron rotundifolium

Performance of sheep grazing in pastures of Brachiaria decumbens, Brachiaria brizantha, Panicum maximum, and Andropogon gayanus with different protodioscin concentrations

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