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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/07/2011 |
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Data da última atualização: |
01/07/2016 |
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Autoria: |
RIET-CORREA, F.; HARAGUCHI, M.; DANTAS, A. F. M.; BURAKOVAS, R. G.; YOKOSUKA, Y.; MIMAKI, Y.; MEDEIROS, R. M. T.; MATOS, P. F. de. |
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Título: |
Sheep poisoning by Panicum dichotomiflorum in northeastern Brazil. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, v. 29, n. 1, p. 94-98, Jan., 2009. |
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Idioma: |
Inglês |
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Conteúdo: |
Different species of Panicum, including P. dichotomiflorum,have been reported as a cause of photosensitization in sheep, horses, cattle and goats. An outbreak of hepatogenous photosensitization occurred in 3 flocks of hair sheep in the Brazilian semiarid region. Eighty one out of 365 sheep were affected and 39 died. The main affected animals were nursing lambs and sheep younger than one year old. Donkeys, goats and cattle grazing in the same pasture were not affected. Clinical signs were edema of the head, followed by dermatitis, mainly in the face, ears, and croup, ocular discharge, corneal opacity with blindness, and redness of the coronary band and hoof. At necropsy of one affected lamb the liver was yellowish. Upon histologic examination scattered necrotic hepatocytes were observed in the liver and focal areas of necrosis of myocytes appeared in the heart. Samples of P. dicotomiflorum were analyzed by TLC and those containing saponins were isolated by HPLC using RP-C18 column and eluted with a mixture of MeOH and H2O. The isolated compounds were submitted to 1H and 13C NMR spectroscopy. Reactions were positive to furostanol saponins with the same Rf of the standard protodioscin (0.21) and methylprotodioscin (0.32). The spectroscopic results indicated a mixture of (25R)- and (25S)-protodioscin isomers in a proportion of 3:1, and methylprotodioscin.
[Intoxicação por Panicum dicotomiflorum em ovinos na Região Nordeste].
Abstract: Diferentes espécies de Panicum, incluindo P. dichotomiflorum,causam fotossensibilização em ovinos, eqüinos, bovinos e caprinos. Um surto de fotossensibilização hepatógena ocorreu em 3 rebanhos de ovinos no município de Casa Nova, Bahia. Oitenta e um de 365 ovinos adoeceram e 39 morreram. Cordeiros lactentes e ovinos de menos de um ano foram mais afetados. Jumentos, cabras e bovinos que permaneciam nas mesmas pastagens não foram afetados. Clinicamente observou-se edema da face, seguido por dermatite, principalmente da face, orelhas e garupa, corrimento ocular, opacidade da córnea com cegueira, e avermelhamento do rodete coronário e casco. Na necropsia de um cordeiro afetado o fígado estava amarelado. Na histologia observou-se necrose aleatória de hepatócitos no fígado e áreas focais de necrose de miócitos no miocárdio. Amostras de P. dicotomiflorum foram analisadas por cromatografia em camada delgada e aquelas contendo saponinas foram isoladas por HPLC utilizando uma coluna RP-C18 com mistura de metanol e água. Os compostos isolados foram submetidos a espectroscopia de ressonância magnética nuclear de hidrogênio (RMN 1H) e de carbono (RMN 13C). As reações foram positivas para saponinas furostanólicas com o mesmo Rf que os padrões de protodioscina (0,21) e metilprotodioscina (0,32). Este resultado e os dados espectroscópicos sugerem a presença, em P. dichotomiflorum, de metilprotodioscina e uma mistura de isômeros (25R)- e (25S)- de protodioscina em uma proporção de 3:1. MenosDifferent species of Panicum, including P. dichotomiflorum,have been reported as a cause of photosensitization in sheep, horses, cattle and goats. An outbreak of hepatogenous photosensitization occurred in 3 flocks of hair sheep in the Brazilian semiarid region. Eighty one out of 365 sheep were affected and 39 died. The main affected animals were nursing lambs and sheep younger than one year old. Donkeys, goats and cattle grazing in the same pasture were not affected. Clinical signs were edema of the head, followed by dermatitis, mainly in the face, ears, and croup, ocular discharge, corneal opacity with blindness, and redness of the coronary band and hoof. At necropsy of one affected lamb the liver was yellowish. Upon histologic examination scattered necrotic hepatocytes were observed in the liver and focal areas of necrosis of myocytes appeared in the heart. Samples of P. dicotomiflorum were analyzed by TLC and those containing saponins were isolated by HPLC using RP-C18 column and eluted with a mixture of MeOH and H2O. The isolated compounds were submitted to 1H and 13C NMR spectroscopy. Reactions were positive to furostanol saponins with the same Rf of the standard protodioscin (0.21) and methylprotodioscin (0.32). The spectroscopic results indicated a mixture of (25R)- and (25S)-protodioscin isomers in a proportion of 3:1, and methylprotodioscin.
[Intoxicação por Panicum dicotomiflorum em ovinos na Região Nordeste].
Abstract: Diferentes espécies de Panicum, incluindo P... Mostrar Tudo |
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Palavras-Chave: |
Protodioscina; Saponinas litogênicas esteroidais. |
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Thesagro: |
Fotossensibilização; Intoxicação; Ovino. |
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Thesaurus Nal: |
Panicum dichotomiflorum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03796naa a2200277 a 4500
001 1896416
005 2016-07-01
008 2009 bl uuuu u00u1 u #d
100 1 $aRIET-CORREA, F.
245 $aSheep poisoning by Panicum dichotomiflorum in northeastern Brazil.$h[electronic resource]
260 $c2009
520 $aDifferent species of Panicum, including P. dichotomiflorum,have been reported as a cause of photosensitization in sheep, horses, cattle and goats. An outbreak of hepatogenous photosensitization occurred in 3 flocks of hair sheep in the Brazilian semiarid region. Eighty one out of 365 sheep were affected and 39 died. The main affected animals were nursing lambs and sheep younger than one year old. Donkeys, goats and cattle grazing in the same pasture were not affected. Clinical signs were edema of the head, followed by dermatitis, mainly in the face, ears, and croup, ocular discharge, corneal opacity with blindness, and redness of the coronary band and hoof. At necropsy of one affected lamb the liver was yellowish. Upon histologic examination scattered necrotic hepatocytes were observed in the liver and focal areas of necrosis of myocytes appeared in the heart. Samples of P. dicotomiflorum were analyzed by TLC and those containing saponins were isolated by HPLC using RP-C18 column and eluted with a mixture of MeOH and H2O. The isolated compounds were submitted to 1H and 13C NMR spectroscopy. Reactions were positive to furostanol saponins with the same Rf of the standard protodioscin (0.21) and methylprotodioscin (0.32). The spectroscopic results indicated a mixture of (25R)- and (25S)-protodioscin isomers in a proportion of 3:1, and methylprotodioscin. [Intoxicação por Panicum dicotomiflorum em ovinos na Região Nordeste]. Abstract: Diferentes espécies de Panicum, incluindo P. dichotomiflorum,causam fotossensibilização em ovinos, eqüinos, bovinos e caprinos. Um surto de fotossensibilização hepatógena ocorreu em 3 rebanhos de ovinos no município de Casa Nova, Bahia. Oitenta e um de 365 ovinos adoeceram e 39 morreram. Cordeiros lactentes e ovinos de menos de um ano foram mais afetados. Jumentos, cabras e bovinos que permaneciam nas mesmas pastagens não foram afetados. Clinicamente observou-se edema da face, seguido por dermatite, principalmente da face, orelhas e garupa, corrimento ocular, opacidade da córnea com cegueira, e avermelhamento do rodete coronário e casco. Na necropsia de um cordeiro afetado o fígado estava amarelado. Na histologia observou-se necrose aleatória de hepatócitos no fígado e áreas focais de necrose de miócitos no miocárdio. Amostras de P. dicotomiflorum foram analisadas por cromatografia em camada delgada e aquelas contendo saponinas foram isoladas por HPLC utilizando uma coluna RP-C18 com mistura de metanol e água. Os compostos isolados foram submetidos a espectroscopia de ressonância magnética nuclear de hidrogênio (RMN 1H) e de carbono (RMN 13C). As reações foram positivas para saponinas furostanólicas com o mesmo Rf que os padrões de protodioscina (0,21) e metilprotodioscina (0,32). Este resultado e os dados espectroscópicos sugerem a presença, em P. dichotomiflorum, de metilprotodioscina e uma mistura de isômeros (25R)- e (25S)- de protodioscina em uma proporção de 3:1.
650 $aPanicum dichotomiflorum
650 $aFotossensibilização
650 $aIntoxicação
650 $aOvino
653 $aProtodioscina
653 $aSaponinas litogênicas esteroidais
700 1 $aHARAGUCHI, M.
700 1 $aDANTAS, A. F. M.
700 1 $aBURAKOVAS, R. G.
700 1 $aYOKOSUKA, Y.
700 1 $aMIMAKI, Y.
700 1 $aMEDEIROS, R. M. T.
700 1 $aMATOS, P. F. de
773 $tPesquisa Veterinária Brasileira$gv. 29, n. 1, p. 94-98, Jan., 2009.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
15/10/2015 |
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Data da última atualização: |
15/10/2015 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
CERDEIRA, A. L.; SOUZA, M. D. de; FERRACINI, V. L.; QUEIROZ, S. C. do N. de; BOLONHEZI, D.; GOMES, M. A. F.; BALDERRAMA, O.; RAMPAZZO, P.; QUEIROZ, R. H. C.; MATALLO, M. B. |
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Afiliação: |
ANTONIO LUIZ CERDEIRA, CNPMA; MANOEL DORNELAS DE SOUZA, CNPMA; VERA LUCIA FERRACINI, CNPMA; SONIA CLAUDIA DO N DE QUEIROZ, CNPMA; D. BOLONHEZI, IAC; MARCO ANTONIO FERREIRA GOMES, CNPMA; O. BALDERRAMA, Dow AgroSciences; P.RAMPAZZO, Dow AgroSciences; R. H. C. QUEIROZ, EF/USP; M. B. MATALLO, IB. |
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Título: |
Fate of tebuthiuron herbicide in a recharge area of Guarany Aquifer in sugarcane field in Brazil. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE PLANTAS DANINHAS, 25., 2003, Brasília, DF. Trabalhos apresentados. Brasília, DF: SBCPD, 2006. p. 1-6. |
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Idioma: |
Português |
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Conteúdo: |
The region of Ribeirao Preto City located in Sao Paulo State, southeastern Brazil, is an important sugarcane, soybean and corn producing area. This region is also an important recharge area for groundwater of the Guarany aquifer, a water supply source of the city and region. The herbicide tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N'-dimethylurea) is regularly applied in the area. In order to understand the movement of tebuthiuron, laboratory studies were conducted at the Research Division of the Brazilian Department of Agriculture, Embrapa/Environment, Jaguariuna city, Sao Paulo State, Brazil. Tebuthiuron was applied at the recommended label rate with and without sugarcane coverage. Soil samples from Santa Rita do Passa Quatro county were collected at each 20 cm down to 120 cm and taken to the laboratory for determination of tebuthiuron. Tebuthiuron was measured at those depths mentioned before in ten intervals of time up to 300 days. Tebuthiuron half-lives varied from 69 days in sugarcane cropped area to 49 days in non-cropped area. After 180 days there were no measurable residues in the soil and tebuthiuron was not found below 40 cm depth in any time. This supports the lack of tebuthiuron residues found in groundwater in the monitoring program being performed in Ribeirao Preto. Tebuthiuron groundwater monitoring program is still on progress. |
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Palavras-Chave: |
Ground Water; Solute Transport. |
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Thesaurus NAL: |
Agriculture; nonpoint source pollution; water quality. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/131166/1/2006AA-067.pdf
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Marc: |
LEADER 02302nam a2200277 a 4500
001 2026543
005 2015-10-15
008 2006 bl uuuu u00u1 u #d
100 1 $aCERDEIRA, A. L.
245 $aFate of tebuthiuron herbicide in a recharge area of Guarany Aquifer in sugarcane field in Brazil.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE PLANTAS DANINHAS, 25., 2003, Brasília, DF. Trabalhos apresentados. Brasília, DF: SBCPD, 2006. p. 1-6.$c2006
520 $aThe region of Ribeirao Preto City located in Sao Paulo State, southeastern Brazil, is an important sugarcane, soybean and corn producing area. This region is also an important recharge area for groundwater of the Guarany aquifer, a water supply source of the city and region. The herbicide tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N'-dimethylurea) is regularly applied in the area. In order to understand the movement of tebuthiuron, laboratory studies were conducted at the Research Division of the Brazilian Department of Agriculture, Embrapa/Environment, Jaguariuna city, Sao Paulo State, Brazil. Tebuthiuron was applied at the recommended label rate with and without sugarcane coverage. Soil samples from Santa Rita do Passa Quatro county were collected at each 20 cm down to 120 cm and taken to the laboratory for determination of tebuthiuron. Tebuthiuron was measured at those depths mentioned before in ten intervals of time up to 300 days. Tebuthiuron half-lives varied from 69 days in sugarcane cropped area to 49 days in non-cropped area. After 180 days there were no measurable residues in the soil and tebuthiuron was not found below 40 cm depth in any time. This supports the lack of tebuthiuron residues found in groundwater in the monitoring program being performed in Ribeirao Preto. Tebuthiuron groundwater monitoring program is still on progress.
650 $aAgriculture
650 $anonpoint source pollution
650 $awater quality
653 $aGround Water
653 $aSolute Transport
700 1 $aSOUZA, M. D. de
700 1 $aFERRACINI, V. L.
700 1 $aQUEIROZ, S. C. do N. de
700 1 $aBOLONHEZI, D.
700 1 $aGOMES, M. A. F.
700 1 $aBALDERRAMA, O.
700 1 $aRAMPAZZO, P.
700 1 $aQUEIROZ, R. H. C.
700 1 $aMATALLO, M. B.
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Embrapa Meio Ambiente (CNPMA) |
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