Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://doi.org/10.1016/j.smallrumres.2018.08.018 http://www.locus.ufv.br/handle/123456789/23580 |
Resumo: | The work consisted of the evaluation of photosensitization in sheep grazing signal grass (Brachiaria decumbens) in a silvopastoral system or under full sunlight for 60 days in the summer. We hypothesized that shade provided by trees in the silvopastoral system prevents or alleviates the classic symptoms of photosensitization in grazing sheep and affects the concentration of the saponin protodioscin in signal grass. Twenty naïve crossbred sheep (Dorper x Santa Ines) were used in a randomized block design, with two blocks and five animals per block. Animals in both silvopastoral and full sun treatments grazed B. decumbens, and animals in both treatments presented with clinical symptoms, alterations in the liver, and increased serum levels of gamma-glutamyltransferase (GGT), aspartate aminotransferase (AST), and bilirubin over the duration of the experiment. Although the protodioscin content of B. decumbens in the silvopastoral system was lower than in the full sun treatment, it was sufficient to cause secondary photosensitization in the animals. The natural shading provided by the silvopastoral system does not prevent or ameliorate photosensitization symptoms in young naïve sheep grazing on B. decumbens. |
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Lelis, D. L.Rennó, L. N.Chizzotti, M. L.Pereira, C. E. R.Silva, J. C. P.Moreira, L. G. T.Carvalho, F. B. P.Chizzotti, F. H. M.2019-02-18T20:01:56Z2019-02-18T20:01:56Z2018-120921-4488https://doi.org/10.1016/j.smallrumres.2018.08.018http://www.locus.ufv.br/handle/123456789/23580The work consisted of the evaluation of photosensitization in sheep grazing signal grass (Brachiaria decumbens) in a silvopastoral system or under full sunlight for 60 days in the summer. We hypothesized that shade provided by trees in the silvopastoral system prevents or alleviates the classic symptoms of photosensitization in grazing sheep and affects the concentration of the saponin protodioscin in signal grass. Twenty naïve crossbred sheep (Dorper x Santa Ines) were used in a randomized block design, with two blocks and five animals per block. Animals in both silvopastoral and full sun treatments grazed B. decumbens, and animals in both treatments presented with clinical symptoms, alterations in the liver, and increased serum levels of gamma-glutamyltransferase (GGT), aspartate aminotransferase (AST), and bilirubin over the duration of the experiment. Although the protodioscin content of B. decumbens in the silvopastoral system was lower than in the full sun treatment, it was sufficient to cause secondary photosensitization in the animals. The natural shading provided by the silvopastoral system does not prevent or ameliorate photosensitization symptoms in young naïve sheep grazing on B. decumbens.engSmall Ruminant ResearchVolume 169, Pages 24-28, December 2018Elsevier B. V.info:eu-repo/semantics/openAccessIntakeProtodioscinShadeSteroidal saponinToxicityPhotosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral systeminfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdfTexto completoapplication/pdf662955https://locus.ufv.br//bitstream/123456789/23580/1/artigo.pdf302ba54dab5c983943b286905b37cbf4MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/23580/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/235802019-02-18 17:04:16.724oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452019-02-18T20:04:16LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system |
title |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system |
spellingShingle |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system Lelis, D. L. Intake Protodioscin Shade Steroidal saponin Toxicity |
title_short |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system |
title_full |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system |
title_fullStr |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system |
title_full_unstemmed |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system |
title_sort |
Photosensitization in naïve sheep grazing signal grass (Brachiaria decumbens) under full sunlight or a silvopastoral system |
author |
Lelis, D. L. |
author_facet |
Lelis, D. L. Rennó, L. N. Chizzotti, M. L. Pereira, C. E. R. Silva, J. C. P. Moreira, L. G. T. Carvalho, F. B. P. Chizzotti, F. H. M. |
author_role |
author |
author2 |
Rennó, L. N. Chizzotti, M. L. Pereira, C. E. R. Silva, J. C. P. Moreira, L. G. T. Carvalho, F. B. P. Chizzotti, F. H. M. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Lelis, D. L. Rennó, L. N. Chizzotti, M. L. Pereira, C. E. R. Silva, J. C. P. Moreira, L. G. T. Carvalho, F. B. P. Chizzotti, F. H. M. |
dc.subject.pt-BR.fl_str_mv |
Intake Protodioscin Shade Steroidal saponin Toxicity |
topic |
Intake Protodioscin Shade Steroidal saponin Toxicity |
description |
The work consisted of the evaluation of photosensitization in sheep grazing signal grass (Brachiaria decumbens) in a silvopastoral system or under full sunlight for 60 days in the summer. We hypothesized that shade provided by trees in the silvopastoral system prevents or alleviates the classic symptoms of photosensitization in grazing sheep and affects the concentration of the saponin protodioscin in signal grass. Twenty naïve crossbred sheep (Dorper x Santa Ines) were used in a randomized block design, with two blocks and five animals per block. Animals in both silvopastoral and full sun treatments grazed B. decumbens, and animals in both treatments presented with clinical symptoms, alterations in the liver, and increased serum levels of gamma-glutamyltransferase (GGT), aspartate aminotransferase (AST), and bilirubin over the duration of the experiment. Although the protodioscin content of B. decumbens in the silvopastoral system was lower than in the full sun treatment, it was sufficient to cause secondary photosensitization in the animals. The natural shading provided by the silvopastoral system does not prevent or ameliorate photosensitization symptoms in young naïve sheep grazing on B. decumbens. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018-12 |
dc.date.accessioned.fl_str_mv |
2019-02-18T20:01:56Z |
dc.date.available.fl_str_mv |
2019-02-18T20:01:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://doi.org/10.1016/j.smallrumres.2018.08.018 http://www.locus.ufv.br/handle/123456789/23580 |
dc.identifier.issn.none.fl_str_mv |
0921-4488 |
identifier_str_mv |
0921-4488 |
url |
https://doi.org/10.1016/j.smallrumres.2018.08.018 http://www.locus.ufv.br/handle/123456789/23580 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
Volume 169, Pages 24-28, December 2018 |
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Elsevier B. V. info:eu-repo/semantics/openAccess |
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Elsevier B. V. |
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openAccess |
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Small Ruminant Research |
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Small Ruminant Research |
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