Consulta: creatorFacets:"Gardner,Dale"
Registros recuperados: 3
Data/hora: 07/06/2024 03:21:41

A survey of Senecio spp. affecting livestock in Uruguay and their associated pyrrolizidine alkaloid content
Provedor de dados: 65
Autores: García,Juan Agustín; Santos,Carmen García y; Rosas,Juan; Dutra,Fernando; Gardner,Dale.
ABSTRACT: In Eastern Uruguay there has been a significant increase of seneciosis in grazing livestock with most affected localities related to counties neighboring the Brazilian border. A survey in 28 farms associated with poisoning outbreaks in grazing cattle in Eastern Uruguay was carried out. Fifty populations of Senecio plants were collected for alkaloid analysis and species identification. Four species were identified: S. oxyphyllus DC, S. madagascariensis Poir, S. brasiliensis (Spreng.) Less., and S. selloi DC. Alkaloids were identified by a combination of GC-MS and HPLC-MS analysis and included: retrorsine in S. oxyphyllus; retrorsine, usaramine, and senecivernine/senecionine in S. selloi; retrorsine, senecivernine/senecionine, integerrimine, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seneciosis; Plant secondary metabolites; Ruminants; Poisonous plants; Asteraceae.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200501

Ipomoea brasiliana poisoning on buck reproduction
Provedor de dados: 65
Autores: Cunha,Ana Lizia Brito da; Medeiros,Juliana Pinto de; Riet-Correa,Franklin; Gardner,Dale; Chaves,Hisadora Advíncula da Silva; Silva Filho,Givaldo Bom da; Souza,Francisco de Assis Leite; Evêncio Neto,Joaquim; Mendonça,Fábio de Souza.
ABSTRACT:  Swainsonine-containing plants comprise a group of important poisonous plants in Brazil. This research aimed to characterize both the behavioral changes related to reproduction and appearance of lesions in the reproductive system of bucks poisoned by Ipomoea brasiliana. I. brasiliana plants were collected and administered at a dose of 4g/kg (800µg swainsonine/kg) to two groups of bucks for 45 days. Goats from Group I were euthanized on the 46th day of the experiment, and goats from Group II were euthanized on the 120th day. Group III was composed of goats that did not receive I. brasiliana and were euthanized on the 120th day of the experiment. Reproductive behavioral changes were observed starting on day 20 and were characterized by an absence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaloids; Lysosomal storage disease; Plant poisoning; Ruminants.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001000552

Aversão alimentar condicionada a Ipomoea carnea var. fistulosa em ovinos
Provedor de dados: 65
Autores: Adrien,Maria de Lourdes; Gardner,Dale; Pfister,James; Pereira,Clairton Marcolongo; Correa,Franklin Riet; Schild,Ana Lucia.
Quinze ovinos foram adaptados ao consumo de Ipomoea carnea por 36 dias. Posteriormente, foram divididos ao acaso em três grupos de cinco ovinos cada e avertidos com cloreto de lítio (LiCl) (Grupo 1) e Baccharis coridifolia (Grupo 2). O Grupo 3 permaneceu como controle. Os ovinos foram desafiados ao consumo da planta na pastagem e em baias individuais até o 74° dia após o primeiro dia da aversão. Nos dias 14 e 19, o número de ovinos que consumiu I. carnea no Grupo 3 foi significativamente maior que o número de ovinos que consumiu a planta nos Grupos 1 e 2 (P=0,004 e P=0,0004, respectivamente). No dia 24, o número de ovinos que consumiu I. carnea foi significativamente maior no Grupo 3 do que no Grupo 1 (P=0,004). A partir do desafio do dia 29, não houve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aversão alimentar; Swainsonina; Plantas tóxicas; Baccharis coridifolia; Ovinos; Ipomoea carnea.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000200027