Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon
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Publication Date: | 2015 |
Other Authors: | , , , , |
Format: | Article |
Language: | por |
Source: | Semina. Ciências Agrárias (Online) |
Download full: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293 |
Summary: | The objective of this study was to evaluate the preference of forage intake on pastures subjected to doses of N. The experimental design was a randomized blocks, with split plots in 5 x 3, five N rates (0, 25, 50, 75 and 100 kg ha-1 cycle-1) and three instant of grazing (mass initial estimates) and 5 x 2, five N rates and two instants of grazing (estimates related to the disappearance of forage), with four replications, totaling 20 experimental units. The preference for consumption was measured morphogenesis, based on the flow of bodies missing in function of grazing time of grazing. The forage intake showed a linear response to N supply, with a significant reduction in herbage mass values over 6 occupation period to 12 hours of the plots, demonstrating selective grazing on increase doses of N. Marandu-gass are not fertilized only grazed when forage mass in the larger N application rate falls due to the grazing time. The herbage disappearancee in the lower stratum also responded linearly to N in the first 6 hours of grazing, while the forage disappearance of the upper stratum responded quadratically to N supply. The probability of defoliation was different (P<0.05) for the grazing time and N levels. Confirming that cattle prefer to consume forages with high levels of N application on the less, in the early hours of grazing. |
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Semina. Ciências Agrárias (Online) |
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Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal AmazonPreferência de forragem de Capim-Marandu (Urochloa brizantha cv. Marandu) manejado sob lotação intermitente e submetido à doses de nitrogênio na Amazônia legalIntake selectivityNitrogen supplyStructure of the pasture.Estrutura do pastoSeletividade no consumoSuprimento de nitrogênio.Ciências AgráriasThe objective of this study was to evaluate the preference of forage intake on pastures subjected to doses of N. The experimental design was a randomized blocks, with split plots in 5 x 3, five N rates (0, 25, 50, 75 and 100 kg ha-1 cycle-1) and three instant of grazing (mass initial estimates) and 5 x 2, five N rates and two instants of grazing (estimates related to the disappearance of forage), with four replications, totaling 20 experimental units. The preference for consumption was measured morphogenesis, based on the flow of bodies missing in function of grazing time of grazing. The forage intake showed a linear response to N supply, with a significant reduction in herbage mass values over 6 occupation period to 12 hours of the plots, demonstrating selective grazing on increase doses of N. Marandu-gass are not fertilized only grazed when forage mass in the larger N application rate falls due to the grazing time. The herbage disappearancee in the lower stratum also responded linearly to N in the first 6 hours of grazing, while the forage disappearance of the upper stratum responded quadratically to N supply. The probability of defoliation was different (P<0.05) for the grazing time and N levels. Confirming that cattle prefer to consume forages with high levels of N application on the less, in the early hours of grazing.Objetivou-se avaliar a preferência na apreensão de forragem em pastos submetidos às doses de N, em experimento disposto em blocos ao acaso, no esquema de parcelas subdivididas, sendo cinco as doses de N (0, 25, 50, 75 e 100 kg ha-1 ciclo-1) e três momentos de pastejo (estimativas iniciais de massa) e, cinco doses de N e dois momentos de pastejo (estimativas relacionadas ao desaparecimento de forragem) com quatro repetições, totalizando-se vinte unidades experimentais. A avaliação da preferência no consumo foi mensurada via morfogênese, com base no fluxo de órgãos desaparecidos em função do tempo de pastejo. O desaparecimento de forragem respondeu linearmente ao suprimento de N, com decréscimo acentuado nos valores de massa de forragem com o passar do período de ocupação de 6 para 12 horas, evidenciando-se pastejo seletivo nas maiores doses de N. Pastos não adubados são pastejados somente quando massa de forragem nas maiores doses de aplicação de N cai em função do tempo de pastejo. O desaparecimento de forragem no estrato inferior também respondeu linearmente ao N nas 6 primeiras horas de pastejo, enquanto que o desaparecimento de forragem do estrato superior respondeu de forma quadrática ao suprimento de N. A probabilidade de desfolhação foi diferenciada (P<0,05) para o tempo de pastejo e as doses crescentes de N e, ratificam que os animais em pastejo preferem ingerir forragem dos pastos com maior nível de aplicação de N em detrimento os com menor nas primeiras horas de pastejo.UEL2015-08-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1629310.5433/1679-0359.2015v36n4p2713Semina: Ciências Agrárias; Vol. 36 No. 4 (2015); 2713-2726Semina: Ciências Agrárias; v. 36 n. 4 (2015); 2713-27261679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/pdf_802https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/33765https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/35652https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/36004Melo, Jonahtan ChavesAlexandrino, EmersonPaula Neto, Joaquim JoséSilva, André Augusto MarinhoNeiva, José Neuman MirandaRezende, José Messiasinfo:eu-repo/semantics/openAccess2015-11-19T18:34:39Zoai:ojs.pkp.sfu.ca:article/16293Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2015-11-19T18:34:39Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon Preferência de forragem de Capim-Marandu (Urochloa brizantha cv. Marandu) manejado sob lotação intermitente e submetido à doses de nitrogênio na Amazônia legal |
title |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon |
spellingShingle |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon Melo, Jonahtan Chaves Intake selectivity Nitrogen supply Structure of the pasture. Estrutura do pasto Seletividade no consumo Suprimento de nitrogênio. Ciências Agrárias |
title_short |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon |
title_full |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon |
title_fullStr |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon |
title_full_unstemmed |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon |
title_sort |
Preference of fodder marandu-grass (Urochloa brizantha cv. Marandu) managed under intermittent stocking and submitted to nitrogen levels in the legal Amazon |
author |
Melo, Jonahtan Chaves |
author_facet |
Melo, Jonahtan Chaves Alexandrino, Emerson Paula Neto, Joaquim José Silva, André Augusto Marinho Neiva, José Neuman Miranda Rezende, José Messias |
author_role |
author |
author2 |
Alexandrino, Emerson Paula Neto, Joaquim José Silva, André Augusto Marinho Neiva, José Neuman Miranda Rezende, José Messias |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Melo, Jonahtan Chaves Alexandrino, Emerson Paula Neto, Joaquim José Silva, André Augusto Marinho Neiva, José Neuman Miranda Rezende, José Messias |
dc.subject.por.fl_str_mv |
Intake selectivity Nitrogen supply Structure of the pasture. Estrutura do pasto Seletividade no consumo Suprimento de nitrogênio. Ciências Agrárias |
topic |
Intake selectivity Nitrogen supply Structure of the pasture. Estrutura do pasto Seletividade no consumo Suprimento de nitrogênio. Ciências Agrárias |
description |
The objective of this study was to evaluate the preference of forage intake on pastures subjected to doses of N. The experimental design was a randomized blocks, with split plots in 5 x 3, five N rates (0, 25, 50, 75 and 100 kg ha-1 cycle-1) and three instant of grazing (mass initial estimates) and 5 x 2, five N rates and two instants of grazing (estimates related to the disappearance of forage), with four replications, totaling 20 experimental units. The preference for consumption was measured morphogenesis, based on the flow of bodies missing in function of grazing time of grazing. The forage intake showed a linear response to N supply, with a significant reduction in herbage mass values over 6 occupation period to 12 hours of the plots, demonstrating selective grazing on increase doses of N. Marandu-gass are not fertilized only grazed when forage mass in the larger N application rate falls due to the grazing time. The herbage disappearancee in the lower stratum also responded linearly to N in the first 6 hours of grazing, while the forage disappearance of the upper stratum responded quadratically to N supply. The probability of defoliation was different (P<0.05) for the grazing time and N levels. Confirming that cattle prefer to consume forages with high levels of N application on the less, in the early hours of grazing. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-17 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293 10.5433/1679-0359.2015v36n4p2713 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293 |
identifier_str_mv |
10.5433/1679-0359.2015v36n4p2713 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/pdf_802 https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/33765 https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/35652 https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/16293/36004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 36 No. 4 (2015); 2713-2726 Semina: Ciências Agrárias; v. 36 n. 4 (2015); 2713-2726 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1750315418927497216 |