Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/235300 |
Resumo: | The intensity and frequency of grazing affect the defoliating strategy of ruminants, their daily nutrient intake, thus nutrition and physiological status. Italian ryegrass (Lolium multiflorum Lam.) pastures were grazed by sheep either under a low-intensity/high-frequency grazing strategy (Rotatinuous stocking; RN) with nominal pre- and post-grazing sward heights of 18 and 11 cm, respectively, or under a high-intensity/low-frequency strategy (traditional rotational stocking; RT) with nominal pre- and post-grazing sward heights of 25 and 5 cm, respectively. Treatments were arranged under a complete randomized design and evaluated over two periods, in different years. In 2017, the aim was to depict the type of bites that sheep perform during the grazing-down and associate them to the grazing management strategy according to their relative contribution to the diet ingested. In 2018 we estimated the total nutrient intake and evaluated blood indicators of the nutritional status and immune response to stress of sheep. The bite types accounting the most for the diet ingested by RN sheep were those performed on the “top stratum” of plants with around 20, 15, and 25 cm, whereas the type of bites accounting the most for the diet of RT sheep were those performed on “grazed plants” with around 10, 5, and ≤ 3 cm. In 2018, the RN sheep increased by 18% the total organic matter (OM) intake and by 20–25% the intake of soluble nutrients (i.e., crude protein, total soluble sugars, crude fat), digestible OM and of metabolizable energy, and had 17.5, 18, and 6.1% greater blood concentration of glucose, urea nitrogen (BUN) and albumin, respectively, but 17% lower blood neutrophil-to-lymphocyte (N:L) ratio. Sheep grazing vegetative Italian ryegrass pastures under the low-intensity/high-frequency grazing strategy (RN) ingested a diet of better quality from bites allocated on the top stratum of plants, had greater intake of soluble nutrients and blood parameters positively associated with nutritional status and immune response to stress. |
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Sanchez Zubieta, AngelMarín Gómez, AlejandraSavian, Jean VictorBolzan, Anderson Michel SoaresRossetto, JusianeBarreto, Mariana TrindadeBindelle, JérômeBremm, CarolinaQuishpe Contreras, Laura VictoriaValle, Stella de FariaDecruyenaere, VirginieCarvalho, Paulo Cesar de Faccio2022-02-18T04:34:10Z20212297-1769http://hdl.handle.net/10183/235300001136557The intensity and frequency of grazing affect the defoliating strategy of ruminants, their daily nutrient intake, thus nutrition and physiological status. Italian ryegrass (Lolium multiflorum Lam.) pastures were grazed by sheep either under a low-intensity/high-frequency grazing strategy (Rotatinuous stocking; RN) with nominal pre- and post-grazing sward heights of 18 and 11 cm, respectively, or under a high-intensity/low-frequency strategy (traditional rotational stocking; RT) with nominal pre- and post-grazing sward heights of 25 and 5 cm, respectively. Treatments were arranged under a complete randomized design and evaluated over two periods, in different years. In 2017, the aim was to depict the type of bites that sheep perform during the grazing-down and associate them to the grazing management strategy according to their relative contribution to the diet ingested. In 2018 we estimated the total nutrient intake and evaluated blood indicators of the nutritional status and immune response to stress of sheep. The bite types accounting the most for the diet ingested by RN sheep were those performed on the “top stratum” of plants with around 20, 15, and 25 cm, whereas the type of bites accounting the most for the diet of RT sheep were those performed on “grazed plants” with around 10, 5, and ≤ 3 cm. In 2018, the RN sheep increased by 18% the total organic matter (OM) intake and by 20–25% the intake of soluble nutrients (i.e., crude protein, total soluble sugars, crude fat), digestible OM and of metabolizable energy, and had 17.5, 18, and 6.1% greater blood concentration of glucose, urea nitrogen (BUN) and albumin, respectively, but 17% lower blood neutrophil-to-lymphocyte (N:L) ratio. Sheep grazing vegetative Italian ryegrass pastures under the low-intensity/high-frequency grazing strategy (RN) ingested a diet of better quality from bites allocated on the top stratum of plants, had greater intake of soluble nutrients and blood parameters positively associated with nutritional status and immune response to stress.application/pdfengFrontiers in Veterinary Science. Lausanne. Vol. 8 (June 2021), 631820, 13 p.Sistema de pastejoComportamento alimentarEstado nutricionalPerfil hematológicoRespostas imunesOvinosGrazing management modelsSward heightIngestive comfortNutritional statusAnimal welfareLow-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheepEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001136557.pdf.txt001136557.pdf.txtExtracted Texttext/plain64932http://www.lume.ufrgs.br/bitstream/10183/235300/2/001136557.pdf.txt4bda1ed3e004cbed56c5adadb72a269aMD52ORIGINAL001136557.pdfTexto completo (inglês)application/pdf1313720http://www.lume.ufrgs.br/bitstream/10183/235300/1/001136557.pdf3c704b9c1c26ac384e8cc3291b5e5dcfMD5110183/2353002022-02-22 05:07:32.419999oai:www.lume.ufrgs.br:10183/235300Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-02-22T08:07:32Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep |
title |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep |
spellingShingle |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep Sanchez Zubieta, Angel Sistema de pastejo Comportamento alimentar Estado nutricional Perfil hematológico Respostas imunes Ovinos Grazing management models Sward height Ingestive comfort Nutritional status Animal welfare |
title_short |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep |
title_full |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep |
title_fullStr |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep |
title_full_unstemmed |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep |
title_sort |
Low-intensity, high-frequency grazing positively affects defoliating behavior, nutrient intake and blood indicators of nutrition and stress in sheep |
author |
Sanchez Zubieta, Angel |
author_facet |
Sanchez Zubieta, Angel Marín Gómez, Alejandra Savian, Jean Victor Bolzan, Anderson Michel Soares Rossetto, Jusiane Barreto, Mariana Trindade Bindelle, Jérôme Bremm, Carolina Quishpe Contreras, Laura Victoria Valle, Stella de Faria Decruyenaere, Virginie Carvalho, Paulo Cesar de Faccio |
author_role |
author |
author2 |
Marín Gómez, Alejandra Savian, Jean Victor Bolzan, Anderson Michel Soares Rossetto, Jusiane Barreto, Mariana Trindade Bindelle, Jérôme Bremm, Carolina Quishpe Contreras, Laura Victoria Valle, Stella de Faria Decruyenaere, Virginie Carvalho, Paulo Cesar de Faccio |
author2_role |
author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Sanchez Zubieta, Angel Marín Gómez, Alejandra Savian, Jean Victor Bolzan, Anderson Michel Soares Rossetto, Jusiane Barreto, Mariana Trindade Bindelle, Jérôme Bremm, Carolina Quishpe Contreras, Laura Victoria Valle, Stella de Faria Decruyenaere, Virginie Carvalho, Paulo Cesar de Faccio |
dc.subject.por.fl_str_mv |
Sistema de pastejo Comportamento alimentar Estado nutricional Perfil hematológico Respostas imunes Ovinos |
topic |
Sistema de pastejo Comportamento alimentar Estado nutricional Perfil hematológico Respostas imunes Ovinos Grazing management models Sward height Ingestive comfort Nutritional status Animal welfare |
dc.subject.eng.fl_str_mv |
Grazing management models Sward height Ingestive comfort Nutritional status Animal welfare |
description |
The intensity and frequency of grazing affect the defoliating strategy of ruminants, their daily nutrient intake, thus nutrition and physiological status. Italian ryegrass (Lolium multiflorum Lam.) pastures were grazed by sheep either under a low-intensity/high-frequency grazing strategy (Rotatinuous stocking; RN) with nominal pre- and post-grazing sward heights of 18 and 11 cm, respectively, or under a high-intensity/low-frequency strategy (traditional rotational stocking; RT) with nominal pre- and post-grazing sward heights of 25 and 5 cm, respectively. Treatments were arranged under a complete randomized design and evaluated over two periods, in different years. In 2017, the aim was to depict the type of bites that sheep perform during the grazing-down and associate them to the grazing management strategy according to their relative contribution to the diet ingested. In 2018 we estimated the total nutrient intake and evaluated blood indicators of the nutritional status and immune response to stress of sheep. The bite types accounting the most for the diet ingested by RN sheep were those performed on the “top stratum” of plants with around 20, 15, and 25 cm, whereas the type of bites accounting the most for the diet of RT sheep were those performed on “grazed plants” with around 10, 5, and ≤ 3 cm. In 2018, the RN sheep increased by 18% the total organic matter (OM) intake and by 20–25% the intake of soluble nutrients (i.e., crude protein, total soluble sugars, crude fat), digestible OM and of metabolizable energy, and had 17.5, 18, and 6.1% greater blood concentration of glucose, urea nitrogen (BUN) and albumin, respectively, but 17% lower blood neutrophil-to-lymphocyte (N:L) ratio. Sheep grazing vegetative Italian ryegrass pastures under the low-intensity/high-frequency grazing strategy (RN) ingested a diet of better quality from bites allocated on the top stratum of plants, had greater intake of soluble nutrients and blood parameters positively associated with nutritional status and immune response to stress. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021 |
dc.date.accessioned.fl_str_mv |
2022-02-18T04:34:10Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/235300 |
dc.identifier.issn.pt_BR.fl_str_mv |
2297-1769 |
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001136557 |
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2297-1769 001136557 |
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http://hdl.handle.net/10183/235300 |
dc.language.iso.fl_str_mv |
eng |
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eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Frontiers in Veterinary Science. Lausanne. Vol. 8 (June 2021), 631820, 13 p. |
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