Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/10851 |
Resumo: | The objective of this research was to evaluate the productivity and nutritive value of elephant grass pastures, subjected to conventional and organic production system. In the conventional system elephant grass was planted in rows 1.2 m apart from each other. In the organic system elephant grass was planted in rows 3 m apart from each other. In the space between rows, in cool season, annual ryegrass was sown; allowing the development of spontaneous growing species in the warm season. It was applied 100 kg of N/ha from chemical and organic fertilizers (manure of cattle and pig slurry) in the respective pastures. The grazing method was rotated with time to occupy the two days. Holstein cows receiving 0.9% of body weight complementary concentrate feed were used. Pre and post grazing forage mass, botanical and structural composition, forage production and stocking rate were evaluated. Hand-plucked samples were collected to analyze chemical composition and digestibility. Experimental design was completely randomized with two treatments (forage systems), three replicates (paddocks) and repeated measures (mean values of grazing cycles or season). Eight and seven grazing cycles were performed during the experimental period for respective systems. Organic system present best forage distribution thought the year and highest participation of elephant grass leaf blades on herbage mass. The pasture under conventional system presented higher forage mass and stocking rate. Similar value was found in the chemical composition and digestibility of elephant grass pastures in both pasture systems. The organic as much as conventional system showed high qualitative values considering the fertilization, manage and utilization time, in proposed strategy. The results show that the elephant grass can be used under the organic system proposed. |
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2017-06-132017-06-132014-03-14BEM, Cláudia Marques de. Productivity and nutritive value of elephant grass pastures under organic and conventional systems.. 2014. 57 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2014.http://repositorio.ufsm.br/handle/1/10851The objective of this research was to evaluate the productivity and nutritive value of elephant grass pastures, subjected to conventional and organic production system. In the conventional system elephant grass was planted in rows 1.2 m apart from each other. In the organic system elephant grass was planted in rows 3 m apart from each other. In the space between rows, in cool season, annual ryegrass was sown; allowing the development of spontaneous growing species in the warm season. It was applied 100 kg of N/ha from chemical and organic fertilizers (manure of cattle and pig slurry) in the respective pastures. The grazing method was rotated with time to occupy the two days. Holstein cows receiving 0.9% of body weight complementary concentrate feed were used. Pre and post grazing forage mass, botanical and structural composition, forage production and stocking rate were evaluated. Hand-plucked samples were collected to analyze chemical composition and digestibility. Experimental design was completely randomized with two treatments (forage systems), three replicates (paddocks) and repeated measures (mean values of grazing cycles or season). Eight and seven grazing cycles were performed during the experimental period for respective systems. Organic system present best forage distribution thought the year and highest participation of elephant grass leaf blades on herbage mass. The pasture under conventional system presented higher forage mass and stocking rate. Similar value was found in the chemical composition and digestibility of elephant grass pastures in both pasture systems. The organic as much as conventional system showed high qualitative values considering the fertilization, manage and utilization time, in proposed strategy. The results show that the elephant grass can be used under the organic system proposed.Objetivou-se com esta pesquisa avaliar a produtividade e o valor nutritivo de pastagens de capim elefante submetidas aos sistemas de produção orgânico e convencional. No sistema convencional, o capim elefante foi plantado em linhas afastadas a cada 1,2 m. No sistema orgânico, o capim elefante foi plantado em linhas afastadas a cada 3 m; no espaço entre as linhas, no período hibernal, foi semeado o azevém anual e, no período estival, permitiu-se o desenvolvimento de espécies de crescimento espontâneo. Foram utilizados 100 kg de N/ha com fertilizantes químico e orgânico (esterco de bovino e chorume de suínos) para os respectivos sistemas de produção. O método de pastejo adotado foi o rotacionado, com tempo de ocupação de um ou dois dias, utilizando vacas em lactação que receberam complementação alimentar com concentrado à razão de 0,9% do peso vivo. Foram avaliados a massa de forragem de pré-pastejo e pós-pastejo, composições botânica e estrutural, taxa de desaparecimento, e de acúmulo, produção de forragem e carga animal. Para a determinação da composição química e digestibilidade da forragem, foram retiradas amostras simulando o pastejo. O delineamento experimental foi o inteiramente casualizado com dois tratamentos (sistemas forrageiros), com três repetições (piquetes) e com medidas repetidas (valores médios dos pastejos em cada ciclo ou estação do ano). Durante o período experimental, foram conduzidos oito e sete pastejos para os respectivos sistemas. Na pastagem sob o sistema orgânico, houve melhor distribuição de forragem e maior participação de lâminas foliares do capim elefante na massa de forragem. Na pastagem sob o sistema convencional, verificaram-se maiores valores de produção de forragem e carga animal. Valores similares foram observados quanto à composição química e digestibilidade do capim elefante em ambos os sistemas. Na estratégia proposta, tanto no sistema orgânico quanto no convencional apresentaram teores qualitativos elevados, considerando-se a adubação, manejo e tempo de utilização. Os resultados demonstram que o capim elefante pode ser utilizado segundo o sistema de produção orgânico proposto.Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em ZootecniaUFSMBRZootecniaDigestibilidade in situ da matéria orgânicaDigestibilidade in situ da matéria secaFibra em detergente neutroPennisetum purpureum SchumProdução de forragemProteína brutaTaxa de lotaçãoVacas em lactaçãoCrude proteinDry matter in situ digestibilityForage productionLactating cowsNeutral detergent fiberOrganic matter in situ digestibilityStocking rateCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAProdutividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencionalProductivity and nutritive value of elephant grass pastures under organic and conventional systems.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisOlivo, Clair Jorgehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783027J6Meinerz, Gilmar Robertohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4588351P8Agnolin, Carlos Albertohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4734730T4http://lattes.cnpq.br/5251846633924132Bem, Cláudia Marques de500400000002400500300500300ff2c8b95-f964-4e2e-a9d0-a7ca492ea47be1c0c6a4-1b65-4f93-bfe5-4e3e18bebeb51035f3fb-148f-40bb-8b80-4a363df13365b49d28b6-b9ac-4c92-ac14-2ce0e8965b3ainfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALBEM, CLAUDIA MARQUES DE.pdfapplication/pdf844554http://repositorio.ufsm.br/bitstream/1/10851/1/BEM%2c%20CLAUDIA%20MARQUES%20DE.pdf884974de0c00271fb878b1ef664185e1MD51TEXTBEM, CLAUDIA MARQUES DE.pdf.txtBEM, CLAUDIA MARQUES DE.pdf.txtExtracted texttext/plain110041http://repositorio.ufsm.br/bitstream/1/10851/2/BEM%2c%20CLAUDIA%20MARQUES%20DE.pdf.txt6adbbc7c2559752e46b8b67663305c61MD52THUMBNAILBEM, CLAUDIA MARQUES DE.pdf.jpgBEM, CLAUDIA MARQUES DE.pdf.jpgIM Thumbnailimage/jpeg4775http://repositorio.ufsm.br/bitstream/1/10851/3/BEM%2c%20CLAUDIA%20MARQUES%20DE.pdf.jpgd517bc68c7cf907f001fac42ab736e95MD531/108512022-08-18 11:09:58.483oai:repositorio.ufsm.br:1/10851Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestopendoar:39132022-08-18T14:09:58Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional |
dc.title.alternative.eng.fl_str_mv |
Productivity and nutritive value of elephant grass pastures under organic and conventional systems. |
title |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional |
spellingShingle |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional Bem, Cláudia Marques de Digestibilidade in situ da matéria orgânica Digestibilidade in situ da matéria seca Fibra em detergente neutro Pennisetum purpureum Schum Produção de forragem Proteína bruta Taxa de lotação Vacas em lactação Crude protein Dry matter in situ digestibility Forage production Lactating cows Neutral detergent fiber Organic matter in situ digestibility Stocking rate CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional |
title_full |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional |
title_fullStr |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional |
title_full_unstemmed |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional |
title_sort |
Produtividade e valor nutritivo de pastagens de capim elefante sob os sistemas orgânico e convencional |
author |
Bem, Cláudia Marques de |
author_facet |
Bem, Cláudia Marques de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Olivo, Clair Jorge |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783027J6 |
dc.contributor.referee1.fl_str_mv |
Meinerz, Gilmar Roberto |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4588351P8 |
dc.contributor.referee2.fl_str_mv |
Agnolin, Carlos Alberto |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4734730T4 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/5251846633924132 |
dc.contributor.author.fl_str_mv |
Bem, Cláudia Marques de |
contributor_str_mv |
Olivo, Clair Jorge Meinerz, Gilmar Roberto Agnolin, Carlos Alberto |
dc.subject.por.fl_str_mv |
Digestibilidade in situ da matéria orgânica Digestibilidade in situ da matéria seca Fibra em detergente neutro Pennisetum purpureum Schum Produção de forragem Proteína bruta Taxa de lotação Vacas em lactação |
topic |
Digestibilidade in situ da matéria orgânica Digestibilidade in situ da matéria seca Fibra em detergente neutro Pennisetum purpureum Schum Produção de forragem Proteína bruta Taxa de lotação Vacas em lactação Crude protein Dry matter in situ digestibility Forage production Lactating cows Neutral detergent fiber Organic matter in situ digestibility Stocking rate CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.eng.fl_str_mv |
Crude protein Dry matter in situ digestibility Forage production Lactating cows Neutral detergent fiber Organic matter in situ digestibility Stocking rate |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The objective of this research was to evaluate the productivity and nutritive value of elephant grass pastures, subjected to conventional and organic production system. In the conventional system elephant grass was planted in rows 1.2 m apart from each other. In the organic system elephant grass was planted in rows 3 m apart from each other. In the space between rows, in cool season, annual ryegrass was sown; allowing the development of spontaneous growing species in the warm season. It was applied 100 kg of N/ha from chemical and organic fertilizers (manure of cattle and pig slurry) in the respective pastures. The grazing method was rotated with time to occupy the two days. Holstein cows receiving 0.9% of body weight complementary concentrate feed were used. Pre and post grazing forage mass, botanical and structural composition, forage production and stocking rate were evaluated. Hand-plucked samples were collected to analyze chemical composition and digestibility. Experimental design was completely randomized with two treatments (forage systems), three replicates (paddocks) and repeated measures (mean values of grazing cycles or season). Eight and seven grazing cycles were performed during the experimental period for respective systems. Organic system present best forage distribution thought the year and highest participation of elephant grass leaf blades on herbage mass. The pasture under conventional system presented higher forage mass and stocking rate. Similar value was found in the chemical composition and digestibility of elephant grass pastures in both pasture systems. The organic as much as conventional system showed high qualitative values considering the fertilization, manage and utilization time, in proposed strategy. The results show that the elephant grass can be used under the organic system proposed. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014-03-14 |
dc.date.accessioned.fl_str_mv |
2017-06-13 |
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2017-06-13 |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
BEM, Cláudia Marques de. Productivity and nutritive value of elephant grass pastures under organic and conventional systems.. 2014. 57 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2014. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/10851 |
identifier_str_mv |
BEM, Cláudia Marques de. Productivity and nutritive value of elephant grass pastures under organic and conventional systems.. 2014. 57 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Santa Maria, Santa Maria, 2014. |
url |
http://repositorio.ufsm.br/handle/1/10851 |
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Universidade Federal de Santa Maria |
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