Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1038/s41598-019-44138-x http://hdl.handle.net/11449/189149 |
Resumo: | A three-year-long field experiment was conducted in a continuous grazing system with a variable stocking rate to evaluate effects of increasing nitrogen levels in Marandu grass (Brachiaria brizantha Hochst ex A. Rich Stapf “marandu”) on herbage mass, forage accumulation rate (FAR), forage quality, stocking rate (SR), average daily gain (ADG), gain per hectare (GPH), and gain per kg of applied N. The experimental design was completely randomized with four treatments (control without application of N, and 90, 180, and 270 kg N ha −1 year −1 ) and three replicates (paddocks per treatment); nitrogen was applied in the form of urea. Herbage mass, crude protein (CP), FAR, SR, GPH, and the nitrogen nutrition index increased with increasing nitrogen level (P < 0.05), whereas the neutral detergent fibre (NDF), acid detergent fibre, and nitrogen usage efficiency decreased with increasing nitrogen level (P < 0.01). Crude protein was higher than 12% and NDF lower than 60% in all treatments. Nitrogen application rate affected ADG (P < 0.05) but did not fit any equation. The highest ADG was 90 kg N ha −1 year −1 (985 g animal −1 day −1 ). Increasing the nitrogen level is a promising way to improve Marandu grass production, nutritive value, and animal production. |
id |
UNSP_6e4d5258abe926502ea4c3242cb5ca83 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/189149 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pastureA three-year-long field experiment was conducted in a continuous grazing system with a variable stocking rate to evaluate effects of increasing nitrogen levels in Marandu grass (Brachiaria brizantha Hochst ex A. Rich Stapf “marandu”) on herbage mass, forage accumulation rate (FAR), forage quality, stocking rate (SR), average daily gain (ADG), gain per hectare (GPH), and gain per kg of applied N. The experimental design was completely randomized with four treatments (control without application of N, and 90, 180, and 270 kg N ha −1 year −1 ) and three replicates (paddocks per treatment); nitrogen was applied in the form of urea. Herbage mass, crude protein (CP), FAR, SR, GPH, and the nitrogen nutrition index increased with increasing nitrogen level (P < 0.05), whereas the neutral detergent fibre (NDF), acid detergent fibre, and nitrogen usage efficiency decreased with increasing nitrogen level (P < 0.01). Crude protein was higher than 12% and NDF lower than 60% in all treatments. Nitrogen application rate affected ADG (P < 0.05) but did not fit any equation. The highest ADG was 90 kg N ha −1 year −1 (985 g animal −1 day −1 ). Increasing the nitrogen level is a promising way to improve Marandu grass production, nutritive value, and animal production.UNESP - Univ Estadual Paulista Departamento de Zootecnia Faculdade de Ciências Agrárias e VeterináriasUFRRJ - Univ Federal Rural do Rio de Janeiro Departamento de Produção Animal Instituto de ZootecniaDepartamento de Ciências Exatas Faculdade de Ciências Agrárias e Veterinárias UNESP - Univ Estadual PaulistaUNESP - Univ Estadual Paulista Departamento de Zootecnia Faculdade de Ciências Agrárias e VeterináriasDepartamento de Ciências Exatas Faculdade de Ciências Agrárias e Veterinárias UNESP - Univ Estadual PaulistaUniversidade Estadual Paulista (Unesp)Instituto de ZootecniaDelevatti, Lutti M. [UNESP]Cardoso, Abmael S. [UNESP]Barbero, Rondineli P.Leite, Rhaony G. [UNESP]Romanzini, Eliéder P. [UNESP]Ruggieri, Ana C. [UNESP]Reis, Ricardo A. [UNESP]2019-10-06T16:31:19Z2019-10-06T16:31:19Z2019-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1038/s41598-019-44138-xScientific Reports, v. 9, n. 1, 2019.2045-2322http://hdl.handle.net/11449/18914910.1038/s41598-019-44138-x2-s2.0-85066009520Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScientific Reportsinfo:eu-repo/semantics/openAccess2021-10-23T17:30:23Zoai:repositorio.unesp.br:11449/189149Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T17:30:23Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture |
title |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture |
spellingShingle |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture Delevatti, Lutti M. [UNESP] |
title_short |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture |
title_full |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture |
title_fullStr |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture |
title_full_unstemmed |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture |
title_sort |
Effect of nitrogen application rate on yield, forage quality, and animal performance in a tropical pasture |
author |
Delevatti, Lutti M. [UNESP] |
author_facet |
Delevatti, Lutti M. [UNESP] Cardoso, Abmael S. [UNESP] Barbero, Rondineli P. Leite, Rhaony G. [UNESP] Romanzini, Eliéder P. [UNESP] Ruggieri, Ana C. [UNESP] Reis, Ricardo A. [UNESP] |
author_role |
author |
author2 |
Cardoso, Abmael S. [UNESP] Barbero, Rondineli P. Leite, Rhaony G. [UNESP] Romanzini, Eliéder P. [UNESP] Ruggieri, Ana C. [UNESP] Reis, Ricardo A. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Instituto de Zootecnia |
dc.contributor.author.fl_str_mv |
Delevatti, Lutti M. [UNESP] Cardoso, Abmael S. [UNESP] Barbero, Rondineli P. Leite, Rhaony G. [UNESP] Romanzini, Eliéder P. [UNESP] Ruggieri, Ana C. [UNESP] Reis, Ricardo A. [UNESP] |
description |
A three-year-long field experiment was conducted in a continuous grazing system with a variable stocking rate to evaluate effects of increasing nitrogen levels in Marandu grass (Brachiaria brizantha Hochst ex A. Rich Stapf “marandu”) on herbage mass, forage accumulation rate (FAR), forage quality, stocking rate (SR), average daily gain (ADG), gain per hectare (GPH), and gain per kg of applied N. The experimental design was completely randomized with four treatments (control without application of N, and 90, 180, and 270 kg N ha −1 year −1 ) and three replicates (paddocks per treatment); nitrogen was applied in the form of urea. Herbage mass, crude protein (CP), FAR, SR, GPH, and the nitrogen nutrition index increased with increasing nitrogen level (P < 0.05), whereas the neutral detergent fibre (NDF), acid detergent fibre, and nitrogen usage efficiency decreased with increasing nitrogen level (P < 0.01). Crude protein was higher than 12% and NDF lower than 60% in all treatments. Nitrogen application rate affected ADG (P < 0.05) but did not fit any equation. The highest ADG was 90 kg N ha −1 year −1 (985 g animal −1 day −1 ). Increasing the nitrogen level is a promising way to improve Marandu grass production, nutritive value, and animal production. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:31:19Z 2019-10-06T16:31:19Z 2019-12-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1038/s41598-019-44138-x Scientific Reports, v. 9, n. 1, 2019. 2045-2322 http://hdl.handle.net/11449/189149 10.1038/s41598-019-44138-x 2-s2.0-85066009520 |
url |
http://dx.doi.org/10.1038/s41598-019-44138-x http://hdl.handle.net/11449/189149 |
identifier_str_mv |
Scientific Reports, v. 9, n. 1, 2019. 2045-2322 10.1038/s41598-019-44138-x 2-s2.0-85066009520 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Scientific Reports |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965715578486784 |