Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente
Ano de defesa: | 2013 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
|
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Zootecnia
|
Departamento: |
Zootecnia
|
País: |
BR
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/10831 |
Resumo: | The aim of this study was to evaluate the performance and ingestive behavior of beef heifers grazing natural grassland managed under rotational grazing according to two rest periods in spring and summer. The treatments were two intervals between grazing 375 and 750 DD (degree days), based on thermal cumulative average for leaf expansion of native grasses belonging to two functional groups. The experimental design was randomized complete block design with two treatments and three replications. The experiment was conducted from November 2011 to April 2012. The test animals were Angus beef heifers, with an initial mean age of 12 months and initial weight 185.2 ± 17.4 kg. The ingestive behavior variables evaluated were grazing time, rumination and rest, and daily number and duration of meals, bite rate, number of stations visited per minute, number of steps between feeding stations, length of stay at the station. All variables of ingestive behavior were similar between treatments. However, grazing time and biting rate ranged between assessments. The different intervals between grazing on natural pasture did not influence the patterns of ingestive behavior of heifers. The variables of pasture mass of green leaf and stalk weight in different time periods evaluated the influence of grazing, ruminating and bite rate. Forage mass was higher in the 750 DD treatment, however, the mass of leaf blades were similar among treatments. The highest average daily gains and gains per area were observed in 375 DD treatment. In one evaluation period there was weight loss in animals of both treatments, that was attributed to a drought occurred and the lowest mass of leaf blades of the period. The average stocking density was similar between treatments. The treatment of lower defoliation interval presented greater individual gain. |
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2017-06-132017-06-132013-02-21BARBIERI, Cezar Wancura. Use of two rest intervals between grazing in natural grassland heifers with cutting in hot season. 2013. 97 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2013.http://repositorio.ufsm.br/handle/1/10831The aim of this study was to evaluate the performance and ingestive behavior of beef heifers grazing natural grassland managed under rotational grazing according to two rest periods in spring and summer. The treatments were two intervals between grazing 375 and 750 DD (degree days), based on thermal cumulative average for leaf expansion of native grasses belonging to two functional groups. The experimental design was randomized complete block design with two treatments and three replications. The experiment was conducted from November 2011 to April 2012. The test animals were Angus beef heifers, with an initial mean age of 12 months and initial weight 185.2 ± 17.4 kg. The ingestive behavior variables evaluated were grazing time, rumination and rest, and daily number and duration of meals, bite rate, number of stations visited per minute, number of steps between feeding stations, length of stay at the station. All variables of ingestive behavior were similar between treatments. However, grazing time and biting rate ranged between assessments. The different intervals between grazing on natural pasture did not influence the patterns of ingestive behavior of heifers. The variables of pasture mass of green leaf and stalk weight in different time periods evaluated the influence of grazing, ruminating and bite rate. Forage mass was higher in the 750 DD treatment, however, the mass of leaf blades were similar among treatments. The highest average daily gains and gains per area were observed in 375 DD treatment. In one evaluation period there was weight loss in animals of both treatments, that was attributed to a drought occurred and the lowest mass of leaf blades of the period. The average stocking density was similar between treatments. The treatment of lower defoliation interval presented greater individual gain.O objetivo deste estudo foi avaliar o desempenho produtivo e o comportamento ingestivo de novilhas de corte em pastagem natural manejada sob pastoreio rotativo em função de dois intervalos de descanso na primavera-verão. Os tratamentos avaliados foram dois intervalos entre pastoreios 375 e 750 GD (graus-dia), baseados na soma térmica média acumulada para a expansão foliar de gramíneas nativas pertencentes a dois grupos funcionais. O delineamento utilizado foi em blocos completamente casualizados com dois tratamentos e três repetições de área. O experimento foi conduzido de novembro de 2011 a abril de 2012. Os animais testes foram novilhas de corte, da raça Angus, com idade média inicial de 12 meses e peso inicial 185,2 ± 17,4 kg. As variáveis do comportamento ingestivo avaliadas foram o tempo de pastejo, ruminação e ócio, além de número diário e duração das refeições, taxa de bocados, número de estações visitadas por minuto, número de passos entre estações alimentares, tempo de permanência na estação. Todas as variáveis do comportamento ingestivo foram semelhantes entre os tratamentos avaliados. No entanto, o tempo de pastejo e a taxa de bocados variaram entre as avaliações. Os diferentes intervalos entre pastoreios em pastagem natural não influenciou os padrões de comportamento ingestivo das novilhas. As variáveis do pasto MLFV e massa de colmos nos diferentes períodos avaliados influenciaram nos tempos de pastejo, ruminação e taxa de bocados. A massa de forragem foi superior no tratamento 750 GD, no entanto, a massa de lâminas foliares foi semelhante entre os tratamentos. Os maiores ganhos médios diários e ganhos por área foram observados no tratamento 375 GD. Em um dos períodos de avaliação houve perda de peso nos animais de ambos os tratamentos, que foi atribuído ao déficit hídrico ocorrido e a menor massa de lâminas foliares do período. As cargas médias foram semelhantes entre os tratamentos. O tratamento de menor intervalo entre desfolhas proporcionou aos animais maior ganho individual.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em ZootecniaUFSMBRZootecniaComportamento ingestivoDesempenho produtivoDuração da expansão foliarPastejoTaxa de bocadosBite rateGrazingGrowth performanceIngestive behaviorLeaf expansion durationCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAUtilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quenteUse of two rest intervals between grazing in natural grassland heifers with cutting in hot seasoninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisQuadros, Fernando Luiz Ferreira dehttp://lattes.cnpq.br/9202266292366562Pötter, Lucianahttp://lattes.cnpq.br/0683474086643296Trindade, Júlio Kuhn dahttp://lattes.cnpq.br/6683217704519137http://lattes.cnpq.br/1702338474061462Barbieri, Cezar Wancura50040000000240050030050030087f7a696-584d-4ee4-ad83-13fd04320556629fb11c-ea9e-456b-8a16-9f2bd421890e0a396763-33d6-4c4b-9646-cfa9ccf2739fb854a724-b842-44a9-9aba-75d9645e6d9cinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALBARBIERI, CEZAR WANCURA.pdfapplication/pdf1910519http://repositorio.ufsm.br/bitstream/1/10831/1/BARBIERI%2c%20CEZAR%20WANCURA.pdf8541eb0e0a4f82172e3635f868458018MD51TEXTBARBIERI, CEZAR WANCURA.pdf.txtBARBIERI, CEZAR WANCURA.pdf.txtExtracted texttext/plain213607http://repositorio.ufsm.br/bitstream/1/10831/2/BARBIERI%2c%20CEZAR%20WANCURA.pdf.txt99fc3eef5ee9dd19ef9cc1f6c1fd50bcMD52THUMBNAILBARBIERI, CEZAR WANCURA.pdf.jpgBARBIERI, CEZAR WANCURA.pdf.jpgIM Thumbnailimage/jpeg4807http://repositorio.ufsm.br/bitstream/1/10831/3/BARBIERI%2c%20CEZAR%20WANCURA.pdf.jpg98b9579a0b3e6dc365726056ff82fd80MD531/108312023-05-16 15:43:58.988oai:repositorio.ufsm.br:1/10831Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2023-05-16T18:43:58Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente |
dc.title.alternative.eng.fl_str_mv |
Use of two rest intervals between grazing in natural grassland heifers with cutting in hot season |
title |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente |
spellingShingle |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente Barbieri, Cezar Wancura Comportamento ingestivo Desempenho produtivo Duração da expansão foliar Pastejo Taxa de bocados Bite rate Grazing Growth performance Ingestive behavior Leaf expansion duration CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente |
title_full |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente |
title_fullStr |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente |
title_full_unstemmed |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente |
title_sort |
Utilização de dois intervalos de descanso entre pastoreios em pastagem natural com novilhas de corte na estação quente |
author |
Barbieri, Cezar Wancura |
author_facet |
Barbieri, Cezar Wancura |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Quadros, Fernando Luiz Ferreira de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9202266292366562 |
dc.contributor.referee1.fl_str_mv |
Pötter, Luciana |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/0683474086643296 |
dc.contributor.referee2.fl_str_mv |
Trindade, Júlio Kuhn da |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/6683217704519137 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/1702338474061462 |
dc.contributor.author.fl_str_mv |
Barbieri, Cezar Wancura |
contributor_str_mv |
Quadros, Fernando Luiz Ferreira de Pötter, Luciana Trindade, Júlio Kuhn da |
dc.subject.por.fl_str_mv |
Comportamento ingestivo Desempenho produtivo Duração da expansão foliar Pastejo Taxa de bocados |
topic |
Comportamento ingestivo Desempenho produtivo Duração da expansão foliar Pastejo Taxa de bocados Bite rate Grazing Growth performance Ingestive behavior Leaf expansion duration CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.eng.fl_str_mv |
Bite rate Grazing Growth performance Ingestive behavior Leaf expansion duration |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The aim of this study was to evaluate the performance and ingestive behavior of beef heifers grazing natural grassland managed under rotational grazing according to two rest periods in spring and summer. The treatments were two intervals between grazing 375 and 750 DD (degree days), based on thermal cumulative average for leaf expansion of native grasses belonging to two functional groups. The experimental design was randomized complete block design with two treatments and three replications. The experiment was conducted from November 2011 to April 2012. The test animals were Angus beef heifers, with an initial mean age of 12 months and initial weight 185.2 ± 17.4 kg. The ingestive behavior variables evaluated were grazing time, rumination and rest, and daily number and duration of meals, bite rate, number of stations visited per minute, number of steps between feeding stations, length of stay at the station. All variables of ingestive behavior were similar between treatments. However, grazing time and biting rate ranged between assessments. The different intervals between grazing on natural pasture did not influence the patterns of ingestive behavior of heifers. The variables of pasture mass of green leaf and stalk weight in different time periods evaluated the influence of grazing, ruminating and bite rate. Forage mass was higher in the 750 DD treatment, however, the mass of leaf blades were similar among treatments. The highest average daily gains and gains per area were observed in 375 DD treatment. In one evaluation period there was weight loss in animals of both treatments, that was attributed to a drought occurred and the lowest mass of leaf blades of the period. The average stocking density was similar between treatments. The treatment of lower defoliation interval presented greater individual gain. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013-02-21 |
dc.date.accessioned.fl_str_mv |
2017-06-13 |
dc.date.available.fl_str_mv |
2017-06-13 |
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.citation.fl_str_mv |
BARBIERI, Cezar Wancura. Use of two rest intervals between grazing in natural grassland heifers with cutting in hot season. 2013. 97 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2013. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/10831 |
identifier_str_mv |
BARBIERI, Cezar Wancura. Use of two rest intervals between grazing in natural grassland heifers with cutting in hot season. 2013. 97 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2013. |
url |
http://repositorio.ufsm.br/handle/1/10831 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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500400000002 |
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400 500 300 500 300 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
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Programa de Pós-Graduação em Zootecnia |
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UFSM |
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BR |
dc.publisher.department.fl_str_mv |
Zootecnia |
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Universidade Federal de Santa Maria |
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