Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001859 |
Resumo: | The aim of this study was to evaluate the performance of beef heifers in natural grassland under continuous and rotational grazing during the autumn-winter period. The treatments were distributed in a completely randomized design and conducted using the forage mass above eight cm and 50% of the leaf blades mass of tussocks. The animals were Brangus beef heifers with initial body weight of 258kg. The variables evaluated were available forage mass (FMa), leaf blades mass of tussocks (LBMt), real forage allowance (FAr), sward height of the lower stratum (HLS), crude protein (CP), neutral detergent fiber (NDF), organic matter digestibility (OMD), total digestible nutrients (TDN), average daily gain (ADG), body condition score (BCS), reproductive tract score (RTS) and stocking rate (SR). FMa, HLS, OMD and TDN decreased while FAr, CP and NDF were similar during the experimental period. The ADG was positive only at third experimental period while BCS, RTS and SR decreased over time. The natural grassland management under continuous and rotational grazing during the autumn-winter period, using the forage mass above 8cm and 50% of the leaf blades mass of tussocks, does not allow the adequate corporal development for breeding the beef heifers at 24 months old. |
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Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winterPampa biomereproductive tract scoregrazing methodsheifers rearingsward height.The aim of this study was to evaluate the performance of beef heifers in natural grassland under continuous and rotational grazing during the autumn-winter period. The treatments were distributed in a completely randomized design and conducted using the forage mass above eight cm and 50% of the leaf blades mass of tussocks. The animals were Brangus beef heifers with initial body weight of 258kg. The variables evaluated were available forage mass (FMa), leaf blades mass of tussocks (LBMt), real forage allowance (FAr), sward height of the lower stratum (HLS), crude protein (CP), neutral detergent fiber (NDF), organic matter digestibility (OMD), total digestible nutrients (TDN), average daily gain (ADG), body condition score (BCS), reproductive tract score (RTS) and stocking rate (SR). FMa, HLS, OMD and TDN decreased while FAr, CP and NDF were similar during the experimental period. The ADG was positive only at third experimental period while BCS, RTS and SR decreased over time. The natural grassland management under continuous and rotational grazing during the autumn-winter period, using the forage mass above 8cm and 50% of the leaf blades mass of tussocks, does not allow the adequate corporal development for breeding the beef heifers at 24 months old.Universidade Federal de Santa Maria2015-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001859Ciência Rural v.45 n.10 2015reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20141529info:eu-repo/semantics/openAccessSoares,Émerson MendesQuadros,Fernando Luiz Ferreira deCarvalho,Régis Maximiliano Roos deOliveira,Leandro Bittencourt deJochims,FelipeDutra,Gabriela MachadoFernandes,Augusto MirandaTrindade,José Pedro PereiraIlha,Gustavo Freitaseng2016-02-26T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter |
title |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter |
spellingShingle |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter Soares,Émerson Mendes Pampa biome reproductive tract score grazing methods heifers rearing sward height. |
title_short |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter |
title_full |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter |
title_fullStr |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter |
title_full_unstemmed |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter |
title_sort |
Beef heifers performance in natural grassland under continuous and rotational grazing in the autumn-winter |
author |
Soares,Émerson Mendes |
author_facet |
Soares,Émerson Mendes Quadros,Fernando Luiz Ferreira de Carvalho,Régis Maximiliano Roos de Oliveira,Leandro Bittencourt de Jochims,Felipe Dutra,Gabriela Machado Fernandes,Augusto Miranda Trindade,José Pedro Pereira Ilha,Gustavo Freitas |
author_role |
author |
author2 |
Quadros,Fernando Luiz Ferreira de Carvalho,Régis Maximiliano Roos de Oliveira,Leandro Bittencourt de Jochims,Felipe Dutra,Gabriela Machado Fernandes,Augusto Miranda Trindade,José Pedro Pereira Ilha,Gustavo Freitas |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Soares,Émerson Mendes Quadros,Fernando Luiz Ferreira de Carvalho,Régis Maximiliano Roos de Oliveira,Leandro Bittencourt de Jochims,Felipe Dutra,Gabriela Machado Fernandes,Augusto Miranda Trindade,José Pedro Pereira Ilha,Gustavo Freitas |
dc.subject.por.fl_str_mv |
Pampa biome reproductive tract score grazing methods heifers rearing sward height. |
topic |
Pampa biome reproductive tract score grazing methods heifers rearing sward height. |
description |
The aim of this study was to evaluate the performance of beef heifers in natural grassland under continuous and rotational grazing during the autumn-winter period. The treatments were distributed in a completely randomized design and conducted using the forage mass above eight cm and 50% of the leaf blades mass of tussocks. The animals were Brangus beef heifers with initial body weight of 258kg. The variables evaluated were available forage mass (FMa), leaf blades mass of tussocks (LBMt), real forage allowance (FAr), sward height of the lower stratum (HLS), crude protein (CP), neutral detergent fiber (NDF), organic matter digestibility (OMD), total digestible nutrients (TDN), average daily gain (ADG), body condition score (BCS), reproductive tract score (RTS) and stocking rate (SR). FMa, HLS, OMD and TDN decreased while FAr, CP and NDF were similar during the experimental period. The ADG was positive only at third experimental period while BCS, RTS and SR decreased over time. The natural grassland management under continuous and rotational grazing during the autumn-winter period, using the forage mass above 8cm and 50% of the leaf blades mass of tussocks, does not allow the adequate corporal development for breeding the beef heifers at 24 months old. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001859 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001859 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20141529 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.45 n.10 2015 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140547696590848 |