Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6642 |
Resumo: | The research was conducted at the Experimental Station of the Agronomic Institute of Pernambuco (IPA) located in Itambé, dry rainforest region of Pernambuco. The objective was to estimate the coefficients of repeatability, of determination (R2) and the number of measures needed to predict the real value [using principal component analysis (PCA)] to variable morphophysiological and productive, and the responses dwarf elephant grass pasture under grazing sheep. The experiment was carried out in a randomized block design with five Pennisetum purpureum clones were evaluated: Taiwan A-146 2.27, Taiwan A-146 2.37, Taiwan A-146 2114, Merker Mexico MX 6.31 and Mott. Evaluations were performed during five grazing cycles, from September 2008 to April 2009. Twenty five sheep (42 kg average liveweight) were used in a mobgrazing protocol, leaving the paddock at 30 cm of residual stubble height. The clones were managed under rotational stocking, with 32 days of resting period and three days of grazing period for cycles 1, 2, and 5, and 64 days of resting period and two days ofgrazing period for cycles 3 and 4. Response variables analyzed at pre- and post-grazing included leaf area index, light interception, leaf angle, average sward height, green portion of herbage mass (DM basis). In addition, we estimated net herbage accumulation (ALF), in kg DM ha-1 cycle-1, and net herbage accumulation rate (TALF), in kg DM ha-1 day-1. Data were analyzed by univariate or multivariate analysis of repeated measures over time in the SAS. Means were compared by Tukey test at 5% probability. According to the PCA, for the variables LAI and LI in cycles of shorter period of regrowth, and height of plants in the cycles of higher period of rest is needed only one measurement (R2=0.80), classifying them among the characteristics evaluatedas the easiest prediction in elephant grass clones. Assessments for NHA and NHAR size of dwarf elephant grass, under grazing, need long experimental periods. |
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MELLO, Alexandre Carneiro Leão deLIRA, Mário de AndradeFERREIRA, Geane Dias GonçalvesSANTOS, Mércia Virgínia Ferreira dosSILVA, Divan Soares dahttp://lattes.cnpq.br/0723462342997914VIANA, Bruno Leal2017-03-23T12:40:14Z2009-07-27VIANA, Bruno Leal. Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco. 2009. 67 f. Dissertação (Programa de Pós-Graduação em Zootecnia) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6642The research was conducted at the Experimental Station of the Agronomic Institute of Pernambuco (IPA) located in Itambé, dry rainforest region of Pernambuco. The objective was to estimate the coefficients of repeatability, of determination (R2) and the number of measures needed to predict the real value [using principal component analysis (PCA)] to variable morphophysiological and productive, and the responses dwarf elephant grass pasture under grazing sheep. The experiment was carried out in a randomized block design with five Pennisetum purpureum clones were evaluated: Taiwan A-146 2.27, Taiwan A-146 2.37, Taiwan A-146 2114, Merker Mexico MX 6.31 and Mott. Evaluations were performed during five grazing cycles, from September 2008 to April 2009. Twenty five sheep (42 kg average liveweight) were used in a mobgrazing protocol, leaving the paddock at 30 cm of residual stubble height. The clones were managed under rotational stocking, with 32 days of resting period and three days of grazing period for cycles 1, 2, and 5, and 64 days of resting period and two days ofgrazing period for cycles 3 and 4. Response variables analyzed at pre- and post-grazing included leaf area index, light interception, leaf angle, average sward height, green portion of herbage mass (DM basis). In addition, we estimated net herbage accumulation (ALF), in kg DM ha-1 cycle-1, and net herbage accumulation rate (TALF), in kg DM ha-1 day-1. Data were analyzed by univariate or multivariate analysis of repeated measures over time in the SAS. Means were compared by Tukey test at 5% probability. According to the PCA, for the variables LAI and LI in cycles of shorter period of regrowth, and height of plants in the cycles of higher period of rest is needed only one measurement (R2=0.80), classifying them among the characteristics evaluatedas the easiest prediction in elephant grass clones. Assessments for NHA and NHAR size of dwarf elephant grass, under grazing, need long experimental periods.Esta pesquisa foi realizada na Estação Experimental do Instituto Agronômico de Pernambuco (IPA), no município de Itambé, Zona da Mata Seca de Pernambuco, com o objetivo de estimar os coeficientes de repetibilidade, de determinação (R2) e o número mínimo de medições necessárias para predizer o valor real [pela análise dos componentes principais (ACP)] para variáveis morfofisiológicas e produtivas, bem como as respostas dos pastos de capim elefante de porte baixo sob o pastejo de ovinos. O experimento foi conduzido no delineamento em blocos casualizados, com cinco clones de Pennisetum purpureum (Taiwan A-146 2.27, Taiwan A-146 2.37, Taiwan-146 2.114, Merker México MX 6.31, e Mott). As avaliações foram realizadas em cinco ciclos de pastejo, compreendidos entre os meses de setembro de 2008 a abril de 2009. Foram utilizados 25 ovinos, com peso médio de 42 kg, como animais pastejadores em “mobgrazing”, buscando-se a altura de 30 cm de resíduo pós-pastejo. Os clones foram manejados sob lotação intermitente, sendo 32 dias de descanso e três de pastejo para os ciclos 1, 2 e 5 e 64 dias de descanso e dois de pastejo para os ciclos 3 e 4. As variáveisanalisadas foram índice de área foliar, interceptação luminosa, ângulos foliares médios realizados, alturas médias do dossel e massa de forragem seca verde (MSV), no pré e pós pastejo. Foram estimados ainda o acúmulo líquido de forragem (ALF), em kg MS ha-1 ciclo-1 e a taxa de acúmulo líquido de forragem (TALF), em kg MS ha-1 dia-1. Os dados foram analisados por meio de análise univariada ou multivariada de medidas repetidas no tempo no SAS. Para comparação das médias foi utilizado o teste de Tukey a 5% de probabilidade. De acordo com a ACP, para as variáveis IAF e IL nos ciclos de menor período de rebrota, e altura média de plantas nos ciclos de maior período de descanso é necessário apenas uma medição (R2=0,80), classificando-as entre às características avaliadas como as de mais fácil predição em clones de capim elefante. Avaliações de ALF e de TALF para capim elefante de porte baixo, sob pastejo, necessitam de períodos experimentais mais longos.Submitted by (edna.saturno@ufrpe.br) on 2017-03-23T12:40:14Z No. of bitstreams: 1 Bruno Leal Viana.pdf: 1623265 bytes, checksum: 5707cff554bc2506977fb551f2f6b45e (MD5)Made available in DSpace on 2017-03-23T12:40:14Z (GMT). No. of bitstreams: 1 Bruno Leal Viana.pdf: 1623265 bytes, checksum: 5707cff554bc2506977fb551f2f6b45e (MD5) Previous issue date: 2009-07-27application/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em ZootecniaUFRPEBrasilDepartamento de ZootecniaCapim elefante anãoPennisetum purpureumOvinoPastejoÂngulo foliar médioÍndice de área foliarInterceptação luminosaLeaf angleDwarf elephant grassLeaf area indexLight interceptionSheepCIENCIAS AGRARIAS::ZOOTECNIARespostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambucoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-3881065194686295060600600600-76856541506829724321346858981270845602info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPELICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/6642/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51ORIGINALBruno Leal Viana.pdfBruno Leal Viana.pdfapplication/pdf1623265http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/6642/2/Bruno+Leal+Viana.pdf5707cff554bc2506977fb551f2f6b45eMD52tede2/66422017-03-23 09:40:14.585oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2024-05-28T12:34:37.527258Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco |
title |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco |
spellingShingle |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco VIANA, Bruno Leal Capim elefante anão Pennisetum purpureum Ovino Pastejo Ângulo foliar médio Índice de área foliar Interceptação luminosa Leaf angle Dwarf elephant grass Leaf area index Light interception Sheep CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco |
title_full |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco |
title_fullStr |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco |
title_full_unstemmed |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco |
title_sort |
Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco |
author |
VIANA, Bruno Leal |
author_facet |
VIANA, Bruno Leal |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
MELLO, Alexandre Carneiro Leão de |
dc.contributor.advisor-co1.fl_str_mv |
LIRA, Mário de Andrade |
dc.contributor.advisor-co2.fl_str_mv |
FERREIRA, Geane Dias Gonçalves |
dc.contributor.referee1.fl_str_mv |
SANTOS, Mércia Virgínia Ferreira dos |
dc.contributor.referee2.fl_str_mv |
SILVA, Divan Soares da |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0723462342997914 |
dc.contributor.author.fl_str_mv |
VIANA, Bruno Leal |
contributor_str_mv |
MELLO, Alexandre Carneiro Leão de LIRA, Mário de Andrade FERREIRA, Geane Dias Gonçalves SANTOS, Mércia Virgínia Ferreira dos SILVA, Divan Soares da |
dc.subject.por.fl_str_mv |
Capim elefante anão Pennisetum purpureum Ovino Pastejo Ângulo foliar médio Índice de área foliar Interceptação luminosa |
topic |
Capim elefante anão Pennisetum purpureum Ovino Pastejo Ângulo foliar médio Índice de área foliar Interceptação luminosa Leaf angle Dwarf elephant grass Leaf area index Light interception Sheep CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.eng.fl_str_mv |
Leaf angle Dwarf elephant grass Leaf area index Light interception Sheep |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The research was conducted at the Experimental Station of the Agronomic Institute of Pernambuco (IPA) located in Itambé, dry rainforest region of Pernambuco. The objective was to estimate the coefficients of repeatability, of determination (R2) and the number of measures needed to predict the real value [using principal component analysis (PCA)] to variable morphophysiological and productive, and the responses dwarf elephant grass pasture under grazing sheep. The experiment was carried out in a randomized block design with five Pennisetum purpureum clones were evaluated: Taiwan A-146 2.27, Taiwan A-146 2.37, Taiwan A-146 2114, Merker Mexico MX 6.31 and Mott. Evaluations were performed during five grazing cycles, from September 2008 to April 2009. Twenty five sheep (42 kg average liveweight) were used in a mobgrazing protocol, leaving the paddock at 30 cm of residual stubble height. The clones were managed under rotational stocking, with 32 days of resting period and three days of grazing period for cycles 1, 2, and 5, and 64 days of resting period and two days ofgrazing period for cycles 3 and 4. Response variables analyzed at pre- and post-grazing included leaf area index, light interception, leaf angle, average sward height, green portion of herbage mass (DM basis). In addition, we estimated net herbage accumulation (ALF), in kg DM ha-1 cycle-1, and net herbage accumulation rate (TALF), in kg DM ha-1 day-1. Data were analyzed by univariate or multivariate analysis of repeated measures over time in the SAS. Means were compared by Tukey test at 5% probability. According to the PCA, for the variables LAI and LI in cycles of shorter period of regrowth, and height of plants in the cycles of higher period of rest is needed only one measurement (R2=0.80), classifying them among the characteristics evaluatedas the easiest prediction in elephant grass clones. Assessments for NHA and NHAR size of dwarf elephant grass, under grazing, need long experimental periods. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-07-27 |
dc.date.accessioned.fl_str_mv |
2017-03-23T12:40:14Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
VIANA, Bruno Leal. Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco. 2009. 67 f. Dissertação (Programa de Pós-Graduação em Zootecnia) - Universidade Federal Rural de Pernambuco, Recife. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6642 |
identifier_str_mv |
VIANA, Bruno Leal. Respostas morfofisiológicas e produtivas de genótipos de Pennisetum purpureum Schum. de porte baixo sob lotação intermitente de ovinos na Zona da Mata de Pernambuco. 2009. 67 f. Dissertação (Programa de Pós-Graduação em Zootecnia) - Universidade Federal Rural de Pernambuco, Recife. |
url |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6642 |
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por |
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por |
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Universidade Federal Rural de Pernambuco |
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UFRPE |
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Brasil |
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Departamento de Zootecnia |
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Universidade Federal Rural de Pernambuco |
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