Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca
Ano de defesa: | 2006 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Zootecnia
|
Departamento: |
Departamento de Zootecnia
|
País: |
Brasil
|
Palavras-chave em Português: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6840 |
Resumo: | The experiment was carried out at the IPA Experimental Station, Itambé-PE, located in the Forest Zone of Pernambuco. The objective was study structural and morphologic characteristics and evaluate factors related the grazing efficiency in five Pennisetum sp. genotypes (IRI-381, Venezuela, HV-241, Elephant B and Hexaploid) during the dry period of the year. Genotypes were managed under rotational stocking (44 days of resting period and four days of grazing period). The experimental design was complete randomized blocks in split plot (genotypes represented the plots; grazing cycles, the subplots) and four replications. Six replications were used for total, green and dry pre-grazing leaf blade mass. The others variables (green leaf blade accumulation and grazing efficiency) were analyzed using a complete randomizedblocks design with four repetitions. There was variation in the structural and morphologic characteristics of the Pennisetum sp. genotypes. The IRI-381 and Elephant B presented high density of green leaf blade, low percentage of dead material and high density of remaining basal tillers and new aerial tillers, with averages of 5.0 kg DM/ha/cm, 33%, 22 and 146 tillers/m2, respectively. The same genotypes presented greater total and green pre-grazing leaf blade mass, and green leaf blade accumulation and grazing efficiency, with averages of 1374 and 737 kg DM/ha, 654 kg DM/ha/44 days and 80% of the green leaf blade accumulation, respectively. The HV-241 presented high participation of died material in its aerial biomass (55.6%) due to the high tiller mortality (19 and 114 basal and aerial dead tillers/m2, respectively). This genotype stillpresented high grazing efficiency (100% of the green leaf blade accumulation), however low green leaf blade accumulation (155 kg of MS/ha/44 days). Lesser grazing efficiencies were observed in the Hexaploid and Venezuela (59 and 36% of the green leaf blade accumulation, respectively), possibly due to the high losses by grazing (30 and 31% of the pre-grazing total leaf blade mass, respectively). The alterations in the structural and morphologic characteristics of the Pennisetum sp. genotypes suggest that the animal stoking will have to be adjusted to each grazing cycle aiming at the maintenance of forage stand and the quality of the animal diet. The genotypes IRI-381 and Elephant B presented potential to be used under rotational stocking in dry period of the year. There were indications that interspecific hybrid HV-241 was more affected bythe effect of the dry period of the year. |
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SANTOS, Mércia Virginia Ferreira dosLIRA, Mário de AndradeMELLO, Alexandre Carneiro Leão dehttp://lattes.cnpq.br/8936474723708253CUNHA, Márcio Vieira da2017-05-09T13:09:50Z2006-02-21CUNHA, Márcio Vieira da. Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca. 2006. 105 f. Dissertação (Programa de Pós-Graduação em Zootecnia) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6840The experiment was carried out at the IPA Experimental Station, Itambé-PE, located in the Forest Zone of Pernambuco. The objective was study structural and morphologic characteristics and evaluate factors related the grazing efficiency in five Pennisetum sp. genotypes (IRI-381, Venezuela, HV-241, Elephant B and Hexaploid) during the dry period of the year. Genotypes were managed under rotational stocking (44 days of resting period and four days of grazing period). The experimental design was complete randomized blocks in split plot (genotypes represented the plots; grazing cycles, the subplots) and four replications. Six replications were used for total, green and dry pre-grazing leaf blade mass. The others variables (green leaf blade accumulation and grazing efficiency) were analyzed using a complete randomizedblocks design with four repetitions. There was variation in the structural and morphologic characteristics of the Pennisetum sp. genotypes. The IRI-381 and Elephant B presented high density of green leaf blade, low percentage of dead material and high density of remaining basal tillers and new aerial tillers, with averages of 5.0 kg DM/ha/cm, 33%, 22 and 146 tillers/m2, respectively. The same genotypes presented greater total and green pre-grazing leaf blade mass, and green leaf blade accumulation and grazing efficiency, with averages of 1374 and 737 kg DM/ha, 654 kg DM/ha/44 days and 80% of the green leaf blade accumulation, respectively. The HV-241 presented high participation of died material in its aerial biomass (55.6%) due to the high tiller mortality (19 and 114 basal and aerial dead tillers/m2, respectively). This genotype stillpresented high grazing efficiency (100% of the green leaf blade accumulation), however low green leaf blade accumulation (155 kg of MS/ha/44 days). Lesser grazing efficiencies were observed in the Hexaploid and Venezuela (59 and 36% of the green leaf blade accumulation, respectively), possibly due to the high losses by grazing (30 and 31% of the pre-grazing total leaf blade mass, respectively). The alterations in the structural and morphologic characteristics of the Pennisetum sp. genotypes suggest that the animal stoking will have to be adjusted to each grazing cycle aiming at the maintenance of forage stand and the quality of the animal diet. The genotypes IRI-381 and Elephant B presented potential to be used under rotational stocking in dry period of the year. There were indications that interspecific hybrid HV-241 was more affected bythe effect of the dry period of the year.O experimento foi realizado na Estação Experimental do IPA, em Itambé-PE,objetivando estudar características estruturais e morfológicas, assim como os fatores relacionados à eficiência de pastejo em cinco genótipos de Pennisetum sp. (IRI-381,Venezuela, HV-241, Elefante B e Hexaplóide) no período seco do ano, da Zona da Mata de Pernambuco. Os genótipos foram manejados sob lotação rotacionada (44 dias de descanso e quatro dias de permanência) ao longo de dois ciclos de pastejo. Utilizou-se delineamento experimental em blocos ao acaso com parcelas subdivididas (os genótipos representaram as parcelas; os ciclos de pastejo, as subparcelas) e quatro repetições. Para massa de lâmina foliar total, verde, e seca pré-pastejo foram utilizadas seis repetições. Para acúmulo de lâmina foliar verde e eficiência de pastejo foi utilizado delineamento em blocos casualizados com quatro repetições. Houve variação nas características estruturais e morfológicas de genótipos de Pennisetum sp. O IRI-381 e Elefante B apresentaram alta densidade de lâmina foliar verde, baixa porcentagem de material morto e alta densidade de perfilhos basais remanescentes e aéreos novos, com médias de 5,0 kg de MS/ha/cm, 33%, 22 e 146 perfilhos/m2, respectivamente. Estes mesmos genótipos apresentaram maior massa de lâmina foliar total, e verde pré-pastejo, acúmulo de lâmina foliar verde e eficiência de pastejo, com médias de 1374 e 737 kg de MS/ha, 654 kg de MS/ha/44 dias e 80% do acúmulo lâmina foliar verde, respectivamente. OHV-241 apresentou alta participação de material morto em sua biomassa aérea (55,6%) devido a alta mortalidade de perfilhos (19 e 114 perfilhos basais e aéreos mortos/m2,respectivamente). Este genótipo apresentou ainda alta eficiência de pastejo (100% do acúmulo lâmina foliar verde, porém baixo acúmulo de lâmina foliar verde (155 kg de MS/ha/44 dias). Menores eficiências de pastejo foram observadas no Hexaplóide e Venezuela (59 e 36% do acúmulo de lâmina foliar verde, respectivamente), possivelmente devido às altas perdas sob pastejo (30 e 31% da massa de lâmina foliar total pré-pastejo, respectivamente). As alterações nas características estruturais e morfológicas dos genótipos de Pennisetum sp. sugerem que a lotação animal deverá ser ajustada a cada ciclo de pastejo visando a manutenção do stand forrageiro e a qualidade da dieta animal. Os genótipos IRI-381 e Elefante B apresentam potencial para serem utilizados sob lotação rotacionada no período seco do ano. Houve indicações que o híbrido interespecífico HV-241 foi mais afetado pelos efeitos do estresse hídrico noperíodo seco do ano.Submitted by (lucia.rodrigues@ufrpe.br) on 2017-05-09T13:09:50Z No. of bitstreams: 1 Marcio Vieira da Cunha.pdf: 268054 bytes, checksum: 4c968c79527a31867d221fe52ae60458 (MD5)Made available in DSpace on 2017-05-09T13:09:50Z (GMT). No. of bitstreams: 1 Marcio Vieira da Cunha.pdf: 268054 bytes, checksum: 4c968c79527a31867d221fe52ae60458 (MD5) Previous issue date: 2006-02-21Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqapplication/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em ZootecniaUFRPEBrasilDepartamento de ZootecniaForragiculturaCapim elefantePastejoDensidade foliarLâmina foliarCaracterística estruturalCaracterística morfológicaCIENCIAS AGRARIAS::ZOOTECNIACaracterísticas estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de secainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-3881065194686295060600600600600-76856541506829724321346858981270845602-2555911436985713659info: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/tede2/6840/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51ORIGINALMarcio Vieira da Cunha.pdfMarcio Vieira da Cunha.pdfapplication/pdf268054http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/6840/2/Marcio+Vieira+da+Cunha.pdf4c968c79527a31867d221fe52ae60458MD52tede2/68402023-05-10 08:30:55.761oai:tede2:tede2/6840Tk9UQTogQ09MT1FVRSBBUVVJIEEgU1VBIFBSw5NQUklBIExJQ0VOw4dBCkVzdGEgbGljZW7Dp2EgZGUgZXhlbXBsbyDDqSBmb3JuZWNpZGEgYXBlbmFzIHBhcmEgZmlucyBpbmZvcm1hdGl2b3MuCgpMSUNFTsOHQSBERSBESVNUUklCVUnDh8ODTyBOw4NPLUVYQ0xVU0lWQQoKQ29tIGEgYXByZXNlbnRhw6fDo28gZGVzdGEgbGljZW7Dp2EsIHZvY8OqIChvIGF1dG9yIChlcykgb3UgbyB0aXR1bGFyIGRvcyBkaXJlaXRvcyBkZSBhdXRvcikgY29uY2VkZSDDoCBVbml2ZXJzaWRhZGUgClhYWCAoU2lnbGEgZGEgVW5pdmVyc2lkYWRlKSBvIGRpcmVpdG8gbsOjby1leGNsdXNpdm8gZGUgcmVwcm9kdXppciwgIHRyYWR1emlyIChjb25mb3JtZSBkZWZpbmlkbyBhYmFpeG8pLCBlL291IApkaXN0cmlidWlyIGEgc3VhIHRlc2Ugb3UgZGlzc2VydGHDp8OjbyAoaW5jbHVpbmRvIG8gcmVzdW1vKSBwb3IgdG9kbyBvIG11bmRvIG5vIGZvcm1hdG8gaW1wcmVzc28gZSBlbGV0csO0bmljbyBlIAplbSBxdWFscXVlciBtZWlvLCBpbmNsdWluZG8gb3MgZm9ybWF0b3Mgw6F1ZGlvIG91IHbDrWRlby4KClZvY8OqIGNvbmNvcmRhIHF1ZSBhIFNpZ2xhIGRlIFVuaXZlcnNpZGFkZSBwb2RlLCBzZW0gYWx0ZXJhciBvIGNvbnRlw7pkbywgdHJhbnNwb3IgYSBzdWEgdGVzZSBvdSBkaXNzZXJ0YcOnw6NvIApwYXJhIHF1YWxxdWVyIG1laW8gb3UgZm9ybWF0byBwYXJhIGZpbnMgZGUgcHJlc2VydmHDp8Ojby4KClZvY8OqIHRhbWLDqW0gY29uY29yZGEgcXVlIGEgU2lnbGEgZGUgVW5pdmVyc2lkYWRlIHBvZGUgbWFudGVyIG1haXMgZGUgdW1hIGPDs3BpYSBhIHN1YSB0ZXNlIG91IApkaXNzZXJ0YcOnw6NvIHBhcmEgZmlucyBkZSBzZWd1cmFuw6dhLCBiYWNrLXVwIGUgcHJlc2VydmHDp8Ojby4KClZvY8OqIGRlY2xhcmEgcXVlIGEgc3VhIHRlc2Ugb3UgZGlzc2VydGHDp8OjbyDDqSBvcmlnaW5hbCBlIHF1ZSB2b2PDqiB0ZW0gbyBwb2RlciBkZSBjb25jZWRlciBvcyBkaXJlaXRvcyBjb250aWRvcyAKbmVzdGEgbGljZW7Dp2EuIFZvY8OqIHRhbWLDqW0gZGVjbGFyYSBxdWUgbyBkZXDDs3NpdG8gZGEgc3VhIHRlc2Ugb3UgZGlzc2VydGHDp8OjbyBuw6NvLCBxdWUgc2VqYSBkZSBzZXUgCmNvbmhlY2ltZW50bywgaW5mcmluZ2UgZGlyZWl0b3MgYXV0b3JhaXMgZGUgbmluZ3XDqW0uCgpDYXNvIGEgc3VhIHRlc2Ugb3UgZGlzc2VydGHDp8OjbyBjb250ZW5oYSBtYXRlcmlhbCBxdWUgdm9jw6ogbsOjbyBwb3NzdWkgYSB0aXR1bGFyaWRhZGUgZG9zIGRpcmVpdG9zIGF1dG9yYWlzLCB2b2PDqiAKZGVjbGFyYSBxdWUgb2J0ZXZlIGEgcGVybWlzc8OjbyBpcnJlc3RyaXRhIGRvIGRldGVudG9yIGRvcyBkaXJlaXRvcyBhdXRvcmFpcyBwYXJhIGNvbmNlZGVyIMOgIFNpZ2xhIGRlIFVuaXZlcnNpZGFkZSAKb3MgZGlyZWl0b3MgYXByZXNlbnRhZG9zIG5lc3RhIGxpY2Vuw6dhLCBlIHF1ZSBlc3NlIG1hdGVyaWFsIGRlIHByb3ByaWVkYWRlIGRlIHRlcmNlaXJvcyBlc3TDoSBjbGFyYW1lbnRlIAppZGVudGlmaWNhZG8gZSByZWNvbmhlY2lkbyBubyB0ZXh0byBvdSBubyBjb250ZcO6ZG8gZGEgdGVzZSBvdSBkaXNzZXJ0YcOnw6NvIG9yYSBkZXBvc2l0YWRhLgoKQ0FTTyBBIFRFU0UgT1UgRElTU0VSVEHDh8ODTyBPUkEgREVQT1NJVEFEQSBURU5IQSBTSURPIFJFU1VMVEFETyBERSBVTSBQQVRST0PDjU5JTyBPVSAKQVBPSU8gREUgVU1BIEFHw4pOQ0lBIERFIEZPTUVOVE8gT1UgT1VUUk8gT1JHQU5JU01PIFFVRSBOw4NPIFNFSkEgQSBTSUdMQSBERSAKVU5JVkVSU0lEQURFLCBWT0PDiiBERUNMQVJBIFFVRSBSRVNQRUlUT1UgVE9ET1MgRSBRVUFJU1FVRVIgRElSRUlUT1MgREUgUkVWSVPDg08gQ09NTyAKVEFNQsOJTSBBUyBERU1BSVMgT0JSSUdBw4fDlUVTIEVYSUdJREFTIFBPUiBDT05UUkFUTyBPVSBBQ09SRE8uCgpBIFNpZ2xhIGRlIFVuaXZlcnNpZGFkZSBzZSBjb21wcm9tZXRlIGEgaWRlbnRpZmljYXIgY2xhcmFtZW50ZSBvIHNldSBub21lIChzKSBvdSBvKHMpIG5vbWUocykgZG8ocykgCmRldGVudG9yKGVzKSBkb3MgZGlyZWl0b3MgYXV0b3JhaXMgZGEgdGVzZSBvdSBkaXNzZXJ0YcOnw6NvLCBlIG7Do28gZmFyw6EgcXVhbHF1ZXIgYWx0ZXJhw6fDo28sIGFsw6ltIGRhcXVlbGFzIApjb25jZWRpZGFzIHBvciBlc3RhIGxpY2Vuw6dhLgo=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:2023-05-10T11:30:55Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca |
title |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca |
spellingShingle |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca CUNHA, Márcio Vieira da Forragicultura Capim elefante Pastejo Densidade foliar Lâmina foliar Característica estrutural Característica morfológica CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca |
title_full |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca |
title_fullStr |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca |
title_full_unstemmed |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca |
title_sort |
Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca |
author |
CUNHA, Márcio Vieira da |
author_facet |
CUNHA, Márcio Vieira da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
SANTOS, Mércia Virginia Ferreira dos |
dc.contributor.advisor-co1.fl_str_mv |
LIRA, Mário de Andrade |
dc.contributor.advisor-co2.fl_str_mv |
MELLO, Alexandre Carneiro Leão de |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/8936474723708253 |
dc.contributor.author.fl_str_mv |
CUNHA, Márcio Vieira da |
contributor_str_mv |
SANTOS, Mércia Virginia Ferreira dos LIRA, Mário de Andrade MELLO, Alexandre Carneiro Leão de |
dc.subject.por.fl_str_mv |
Forragicultura Capim elefante Pastejo Densidade foliar Lâmina foliar Característica estrutural Característica morfológica |
topic |
Forragicultura Capim elefante Pastejo Densidade foliar Lâmina foliar Característica estrutural Característica morfológica CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The experiment was carried out at the IPA Experimental Station, Itambé-PE, located in the Forest Zone of Pernambuco. The objective was study structural and morphologic characteristics and evaluate factors related the grazing efficiency in five Pennisetum sp. genotypes (IRI-381, Venezuela, HV-241, Elephant B and Hexaploid) during the dry period of the year. Genotypes were managed under rotational stocking (44 days of resting period and four days of grazing period). The experimental design was complete randomized blocks in split plot (genotypes represented the plots; grazing cycles, the subplots) and four replications. Six replications were used for total, green and dry pre-grazing leaf blade mass. The others variables (green leaf blade accumulation and grazing efficiency) were analyzed using a complete randomizedblocks design with four repetitions. There was variation in the structural and morphologic characteristics of the Pennisetum sp. genotypes. The IRI-381 and Elephant B presented high density of green leaf blade, low percentage of dead material and high density of remaining basal tillers and new aerial tillers, with averages of 5.0 kg DM/ha/cm, 33%, 22 and 146 tillers/m2, respectively. The same genotypes presented greater total and green pre-grazing leaf blade mass, and green leaf blade accumulation and grazing efficiency, with averages of 1374 and 737 kg DM/ha, 654 kg DM/ha/44 days and 80% of the green leaf blade accumulation, respectively. The HV-241 presented high participation of died material in its aerial biomass (55.6%) due to the high tiller mortality (19 and 114 basal and aerial dead tillers/m2, respectively). This genotype stillpresented high grazing efficiency (100% of the green leaf blade accumulation), however low green leaf blade accumulation (155 kg of MS/ha/44 days). Lesser grazing efficiencies were observed in the Hexaploid and Venezuela (59 and 36% of the green leaf blade accumulation, respectively), possibly due to the high losses by grazing (30 and 31% of the pre-grazing total leaf blade mass, respectively). The alterations in the structural and morphologic characteristics of the Pennisetum sp. genotypes suggest that the animal stoking will have to be adjusted to each grazing cycle aiming at the maintenance of forage stand and the quality of the animal diet. The genotypes IRI-381 and Elephant B presented potential to be used under rotational stocking in dry period of the year. There were indications that interspecific hybrid HV-241 was more affected bythe effect of the dry period of the year. |
publishDate |
2006 |
dc.date.issued.fl_str_mv |
2006-02-21 |
dc.date.accessioned.fl_str_mv |
2017-05-09T13:09:50Z |
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 |
CUNHA, Márcio Vieira da. Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca. 2006. 105 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/tede2/6840 |
identifier_str_mv |
CUNHA, Márcio Vieira da. Características estruturais e morfológicas relacionadas à eficiência de pastejo em Pennisetum sp. no período de seca. 2006. 105 f. Dissertação (Programa de Pós-Graduação em Zootecnia) - Universidade Federal Rural de Pernambuco, Recife. |
url |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6840 |
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Universidade Federal Rural de Pernambuco |
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Programa de Pós-Graduação em Zootecnia |
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UFRPE |
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Departamento de Zootecnia |
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Universidade Federal Rural de Pernambuco |
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