Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/26814 |
Resumo: | Expanding knowledge about defoliation patterns in mixtures is crucial to provide grazing strategies targeting to optimize forage production, as it directly influences plant behavior to animal grazing. The work was carried out aiming to evaluate defoliation intensity and frequency of defoliation in pasture of forage sorghum (Sorghum bicolor (L.) Moench.) and alexandergrass (Urochloa plantaginea (Link) Hitch) grazed by beef heifers, kept under continuous stocking. The experimental design was completely randomized, with measures repeated in time, with two treatments, totalizing nine replications. The treatments evaluated were forage species, forage sorghum and alexandergrass, during pasture phenological stages. For variables from structural characteristics of mixture, five evaluation periods (n = 90) were considered. For variables from defoliation patterns, there were four evaluation periods (n = 72). The variables forage mass, forage supply and stocking rate were evaluated only as a function of experimental periods. The overall leaf blade defoliation intensity (%) was higher for forage sorghum, when compared to alexandergrass, in the second and fourth evaluation periods. The overall leaf blade defoliation frequency (number of defoliation blade-1 day-1) was higher for forage sorghum (0.12), to the detriment of alexandergrass (0.09). The total leaf blade mass (kg DM ha-1) was higher and lower in the first and fifth evaluation periods, respectively. In addition, alexandergrass maintained the amount of leaf blade mass in the last evaluation periods, while forage sorghum was already starting pre-flowering phenological stage. In this context, beef heifers have their defoliation patterns altered depending on phenological stage of mixture. A partial preference for forage sorghum was observed, however alexandergrass proved to be a forage species that ensures longevity for the system. Therefore, the mixture of these species is favorable and recommended. |
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2022-11-09T14:04:38Z2022-11-09T14:04:38Z2022-10-03http://repositorio.ufsm.br/handle/1/26814Expanding knowledge about defoliation patterns in mixtures is crucial to provide grazing strategies targeting to optimize forage production, as it directly influences plant behavior to animal grazing. The work was carried out aiming to evaluate defoliation intensity and frequency of defoliation in pasture of forage sorghum (Sorghum bicolor (L.) Moench.) and alexandergrass (Urochloa plantaginea (Link) Hitch) grazed by beef heifers, kept under continuous stocking. The experimental design was completely randomized, with measures repeated in time, with two treatments, totalizing nine replications. The treatments evaluated were forage species, forage sorghum and alexandergrass, during pasture phenological stages. For variables from structural characteristics of mixture, five evaluation periods (n = 90) were considered. For variables from defoliation patterns, there were four evaluation periods (n = 72). The variables forage mass, forage supply and stocking rate were evaluated only as a function of experimental periods. The overall leaf blade defoliation intensity (%) was higher for forage sorghum, when compared to alexandergrass, in the second and fourth evaluation periods. The overall leaf blade defoliation frequency (number of defoliation blade-1 day-1) was higher for forage sorghum (0.12), to the detriment of alexandergrass (0.09). The total leaf blade mass (kg DM ha-1) was higher and lower in the first and fifth evaluation periods, respectively. In addition, alexandergrass maintained the amount of leaf blade mass in the last evaluation periods, while forage sorghum was already starting pre-flowering phenological stage. In this context, beef heifers have their defoliation patterns altered depending on phenological stage of mixture. A partial preference for forage sorghum was observed, however alexandergrass proved to be a forage species that ensures longevity for the system. Therefore, the mixture of these species is favorable and recommended.Ampliar o conhecimento sobre padrões de desfolha em pastagem consorciada é determinante para fornecer estratégias ao manejo do pastoreio, a fim de otimizar a produção de forragem, pois influencia diretamente o comportamento da planta ao pastoreio realizado pelo animal. O trabalho foi conduzido com o objetivo de avaliar a intensidade e frequência de desfolha em pastagem consorciada de sorgo forrageiro (Sorghum bicolor (L.) Moench.) e papuã (Urochloa plantaginea (Link) Hitch) pastejada por bezerras de corte, mantidas sob lotação contínua. O delineamento experimental foi inteiramente casualizado, com medidas repetidas no tempo, com dois tratamentos, totalizando nove repetições. Os tratamentos avaliados foram as espécies forrageiras, sorgo forrageiro e papuã, no decorrer dos estádios fenológicos do pasto. Foram considerados para variáveis oriundas das características estruturais do consórcio forrageiro, cinco períodos de avaliação (n = 90). Para as variáveis oriundas dos padrões de desfolha foram quatro períodos de avaliação (n = 72). As variáveis massa de forragem, oferta de forragem e taxa de lotação foram avaliadas somente em função dos períodos experimentais. A intensidade de desfolha de lâminas foliares geral (%) foi maior para o sorgo forrageiro, quando comparado ao papuã, no segundo e quarto períodos de avaliação. A frequência de desfolha de lâminas foliares geral (nº de desfolhações lâmina-¹ dia-¹ ) foi maior para o sorgo forrageiro (0,12), em detrimento ao papuã (0,09). A massa de lâminas foliares total (kg de MS ha-¹ ) foi maior e menor no primeiro e quinto períodos de avaliação, respectivamente. Além disso, o papuã manteve a quantidade de massa de lâminas foliares nos últimos períodos de avaliação, enquanto o sorgo forrageiro já estava iniciando o estádio fenológico pré-florescimento. Nesse contexto, bezerras de corte tem seus padrões de desfolha alterados em função do estádio fenológico do consórcio forrageiro. A preferência parcial pelo sorgo forrageiro foi observada, no entanto o papuã demonstrou ser uma espécie forrageira que assegura longevidade para o sistema. Portanto, a consorciação dessas espécies é favorável e recomendada.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em ZootecniaUFSMBrasilZootecniaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessConsórcio forrageiroEspécies tropicaisFrequência de desfolhaIntensidade de desfolhaSeletividade animalWarm season mixtureTropical speciesDefoliation frequencyDefoliation intensityAnimal selectivityCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAPadrões de desfolha em pastagem consorciada de sorgo forrageiro e papuãDefoliation pattterns in mixtures of sorghum and alexandergrassinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisPötter, Lucianahttp://lattes.cnpq.br/0683474086643296Quadros, Fernando Luiz Ferreira deMachado, Juliana Medianeirahttp://lattes.cnpq.br/2774725132068064Rodrigues, Dinah Pereira Abbott5004000000026006006006006001a295840-b612-4e13-b6f8-f4a626382187e15f61ac-3a24-4f15-9988-4fc8566547e9d3953d2f-6c4f-4474-a8e8-37f17407955b210b5f59-60f8-4d82-9218-754605c9a078reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/26814/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81956http://repositorio.ufsm.br/bitstream/1/26814/3/license.txt2f0571ecee68693bd5cd3f17c1e075dfMD53ORIGINALDIS_PPGZOOTECNIA_2022_RODRIGUES_DINAH.pdfDIS_PPGZOOTECNIA_2022_RODRIGUES_DINAH.pdfDissertação de Mestradoapplication/pdf1039371http://repositorio.ufsm.br/bitstream/1/26814/1/DIS_PPGZOOTECNIA_2022_RODRIGUES_DINAH.pdf58aa26d6ecfc56bbae08502ccfb3a6d5MD511/268142022-11-09 11:04:38.438oai:repositorio.ufsm.br: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 Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-11-09T14:04:38Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã |
dc.title.alternative.eng.fl_str_mv |
Defoliation pattterns in mixtures of sorghum and alexandergrass |
title |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã |
spellingShingle |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã Rodrigues, Dinah Pereira Abbott Consórcio forrageiro Espécies tropicais Frequência de desfolha Intensidade de desfolha Seletividade animal Warm season mixture Tropical species Defoliation frequency Defoliation intensity Animal selectivity CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã |
title_full |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã |
title_fullStr |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã |
title_full_unstemmed |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã |
title_sort |
Padrões de desfolha em pastagem consorciada de sorgo forrageiro e papuã |
author |
Rodrigues, Dinah Pereira Abbott |
author_facet |
Rodrigues, Dinah Pereira Abbott |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Pötter, Luciana |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0683474086643296 |
dc.contributor.referee1.fl_str_mv |
Quadros, Fernando Luiz Ferreira de |
dc.contributor.referee2.fl_str_mv |
Machado, Juliana Medianeira |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2774725132068064 |
dc.contributor.author.fl_str_mv |
Rodrigues, Dinah Pereira Abbott |
contributor_str_mv |
Pötter, Luciana Quadros, Fernando Luiz Ferreira de Machado, Juliana Medianeira |
dc.subject.por.fl_str_mv |
Consórcio forrageiro Espécies tropicais Frequência de desfolha Intensidade de desfolha Seletividade animal |
topic |
Consórcio forrageiro Espécies tropicais Frequência de desfolha Intensidade de desfolha Seletividade animal Warm season mixture Tropical species Defoliation frequency Defoliation intensity Animal selectivity CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.eng.fl_str_mv |
Warm season mixture Tropical species Defoliation frequency Defoliation intensity Animal selectivity |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
Expanding knowledge about defoliation patterns in mixtures is crucial to provide grazing strategies targeting to optimize forage production, as it directly influences plant behavior to animal grazing. The work was carried out aiming to evaluate defoliation intensity and frequency of defoliation in pasture of forage sorghum (Sorghum bicolor (L.) Moench.) and alexandergrass (Urochloa plantaginea (Link) Hitch) grazed by beef heifers, kept under continuous stocking. The experimental design was completely randomized, with measures repeated in time, with two treatments, totalizing nine replications. The treatments evaluated were forage species, forage sorghum and alexandergrass, during pasture phenological stages. For variables from structural characteristics of mixture, five evaluation periods (n = 90) were considered. For variables from defoliation patterns, there were four evaluation periods (n = 72). The variables forage mass, forage supply and stocking rate were evaluated only as a function of experimental periods. The overall leaf blade defoliation intensity (%) was higher for forage sorghum, when compared to alexandergrass, in the second and fourth evaluation periods. The overall leaf blade defoliation frequency (number of defoliation blade-1 day-1) was higher for forage sorghum (0.12), to the detriment of alexandergrass (0.09). The total leaf blade mass (kg DM ha-1) was higher and lower in the first and fifth evaluation periods, respectively. In addition, alexandergrass maintained the amount of leaf blade mass in the last evaluation periods, while forage sorghum was already starting pre-flowering phenological stage. In this context, beef heifers have their defoliation patterns altered depending on phenological stage of mixture. A partial preference for forage sorghum was observed, however alexandergrass proved to be a forage species that ensures longevity for the system. Therefore, the mixture of these species is favorable and recommended. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-11-09T14:04:38Z |
dc.date.available.fl_str_mv |
2022-11-09T14:04:38Z |
dc.date.issued.fl_str_mv |
2022-10-03 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/26814 |
url |
http://repositorio.ufsm.br/handle/1/26814 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500400000002 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 600 |
dc.relation.authority.fl_str_mv |
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dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Zootecnia |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Zootecnia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
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