Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/36023 |
Resumo: | This study was undertaken to examine production performance, pasture and milk intakes and nutrient digestibility in heifers supplemented with different levels of energy in a creep-feeding system on Urochloa decumbens Stapf pastures during the rainy-dry transition season. Fifty-one heifers with predominant Nellore genetic composition (average initial age and weight: 120 days and 133.4 ± 3.12 kg) and their respective dams were used in an evaluation of production performance, intake, and diet digestibility. Four treatments were evaluated, namely, MM - mineral mixture; T250 - 0.250 kg of supplement per head per day; T500 - 0.500 kg of supplement per head per day; and T750 - 0.750 kg of supplement per head per day, totaling three groups with 13 animals each and one group with 12 animals. All supplements were balanced to provide 100 g of CP animal-1 day-1. LIPE® and chromium oxide were used as external markers to estimate fecal excretion and individual DM and supplement intakes, respectively, whereas iNDF was used as an internal marker for pasture DM intake. Production performance did not differ between the supplemented and unsupplemented animals. Total DM intake and pasture DM intake were higher in the group supplemented with concentrate, and the same was observed for the digestibility of DM and NDFap consumed by the animals. The average cow milk yield was 5.33 kg/day, with average protein and fat contents of 3.51% and 4.85%, respectively. In conclusion, compared to the use of mineral mixture only, multiple supplementation at different levels containing 100 g of CP does not significantly improve performance in lactating beef heifers grazing on Urochloa decumbens Stapf and supplemented during the rainy-dry transition season. |
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Semina. Ciências Agrárias (Online) |
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Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition seasonNíveis de suplementação para bezerras de corte em pastejo na pré-desmama durante o período de transição águas-secaLactating heifersUrochloa decumbensCreep-feedingEnergy supplementation.Bezerras lactentesUrochloa decumbensCreep-feedingSuplementação energética.This study was undertaken to examine production performance, pasture and milk intakes and nutrient digestibility in heifers supplemented with different levels of energy in a creep-feeding system on Urochloa decumbens Stapf pastures during the rainy-dry transition season. Fifty-one heifers with predominant Nellore genetic composition (average initial age and weight: 120 days and 133.4 ± 3.12 kg) and their respective dams were used in an evaluation of production performance, intake, and diet digestibility. Four treatments were evaluated, namely, MM - mineral mixture; T250 - 0.250 kg of supplement per head per day; T500 - 0.500 kg of supplement per head per day; and T750 - 0.750 kg of supplement per head per day, totaling three groups with 13 animals each and one group with 12 animals. All supplements were balanced to provide 100 g of CP animal-1 day-1. LIPE® and chromium oxide were used as external markers to estimate fecal excretion and individual DM and supplement intakes, respectively, whereas iNDF was used as an internal marker for pasture DM intake. Production performance did not differ between the supplemented and unsupplemented animals. Total DM intake and pasture DM intake were higher in the group supplemented with concentrate, and the same was observed for the digestibility of DM and NDFap consumed by the animals. The average cow milk yield was 5.33 kg/day, with average protein and fat contents of 3.51% and 4.85%, respectively. In conclusion, compared to the use of mineral mixture only, multiple supplementation at different levels containing 100 g of CP does not significantly improve performance in lactating beef heifers grazing on Urochloa decumbens Stapf and supplemented during the rainy-dry transition season.Objetivou-se avaliar o desempenho produtivo, consumo de pasto e de leite e a digestibilidade dos nutrientes ingeridos por bezerras, suplementadas com diferentes quantidades de energia, em regime de creep-feeding em pastagens de Urochloa decumbens Stapf, durante o período de transição águas-seca. Foram utilizadas 51 bezerras com predominância de sangue Nelore e suas respectivas mães, com idades e pesos médios iniciais das bezerras de 120 dias e 133,4 ± 3,12 kg, respectivamente, para a avaliação do desempenho produtivo, consumo e digestibilidade da dieta. Foram avaliados quatro tratamentos: MM - mistura mineral; T250 - 0,250 kg de suplemento por cabeça por dia; T500 - 0,500 kg de suplemento por cabeça por dia; T750 - 0,750 kg de suplemento por cabeça por dia; totalizando 3 (três) grupos com 13 (treze) animais cada e um grupo com 12 (doze) animais. Todos os suplementos foram balanceados para fornecerem 100g de PB animal-1 dia-1. Foram utilizados LIPE® e óxido crômico como indicadores externos para estimativa da excreção fecal e do consumo de MS individual de suplemento, respectivamente e a FDNi como indicador interno para o consumo de MS de pasto. O desempenho dos animais não foi diferente para animais suplementados ou não suplementados. O consumo de MS total e MS de pasto foi maior para os animais suplementados com concentrado, bem como a digestibilidade da MS e da FDNcp ingerida pelos animais. A produção média de leite das vacas foi de 5,33 kg por dia, com média 3,51% de proteína e 4,85% de gordura. Com isso, conclui-se que o uso da suplementação múltipla em diferentes níveis, contendo 100 g de PB, comparado a animais recebendo apenas mistura mineral, não promove melhorias significativas no desempenho de bezerras de corte lactentes sob pastejo em Urochloa decumbens Stapf suplementadas no período de transição águas-seca.UEL2019-10-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3602310.5433/1679-0359.2019v40n6Supl3p3719Semina: Ciências Agrárias; Vol. 40 No. 6Supl3 (2019); 3719-3728Semina: Ciências Agrárias; v. 40 n. 6Supl3 (2019); 3719-37281679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/36023/26251Copyright (c) 2019 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessCouto, Victor Rezende MoreiraPaulino, Mário FonsecaValadares Filho, Sebastião de CamposDetmann, EdenioPorto, Marlos OliveiraValente, Eriton Egídio LisboaFigueiredo, Cibelle Borges2022-10-10T15:37:22Zoai:ojs.pkp.sfu.ca:article/36023Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-10T15:37:22Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season Níveis de suplementação para bezerras de corte em pastejo na pré-desmama durante o período de transição águas-seca |
title |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season |
spellingShingle |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season Couto, Victor Rezende Moreira Lactating heifers Urochloa decumbens Creep-feeding Energy supplementation. Bezerras lactentes Urochloa decumbens Creep-feeding Suplementação energética. |
title_short |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season |
title_full |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season |
title_fullStr |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season |
title_full_unstemmed |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season |
title_sort |
Supplementation levels for pre-weaning grazing beef heifers during the rainy-dry transition season |
author |
Couto, Victor Rezende Moreira |
author_facet |
Couto, Victor Rezende Moreira Paulino, Mário Fonseca Valadares Filho, Sebastião de Campos Detmann, Edenio Porto, Marlos Oliveira Valente, Eriton Egídio Lisboa Figueiredo, Cibelle Borges |
author_role |
author |
author2 |
Paulino, Mário Fonseca Valadares Filho, Sebastião de Campos Detmann, Edenio Porto, Marlos Oliveira Valente, Eriton Egídio Lisboa Figueiredo, Cibelle Borges |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Couto, Victor Rezende Moreira Paulino, Mário Fonseca Valadares Filho, Sebastião de Campos Detmann, Edenio Porto, Marlos Oliveira Valente, Eriton Egídio Lisboa Figueiredo, Cibelle Borges |
dc.subject.por.fl_str_mv |
Lactating heifers Urochloa decumbens Creep-feeding Energy supplementation. Bezerras lactentes Urochloa decumbens Creep-feeding Suplementação energética. |
topic |
Lactating heifers Urochloa decumbens Creep-feeding Energy supplementation. Bezerras lactentes Urochloa decumbens Creep-feeding Suplementação energética. |
description |
This study was undertaken to examine production performance, pasture and milk intakes and nutrient digestibility in heifers supplemented with different levels of energy in a creep-feeding system on Urochloa decumbens Stapf pastures during the rainy-dry transition season. Fifty-one heifers with predominant Nellore genetic composition (average initial age and weight: 120 days and 133.4 ± 3.12 kg) and their respective dams were used in an evaluation of production performance, intake, and diet digestibility. Four treatments were evaluated, namely, MM - mineral mixture; T250 - 0.250 kg of supplement per head per day; T500 - 0.500 kg of supplement per head per day; and T750 - 0.750 kg of supplement per head per day, totaling three groups with 13 animals each and one group with 12 animals. All supplements were balanced to provide 100 g of CP animal-1 day-1. LIPE® and chromium oxide were used as external markers to estimate fecal excretion and individual DM and supplement intakes, respectively, whereas iNDF was used as an internal marker for pasture DM intake. Production performance did not differ between the supplemented and unsupplemented animals. Total DM intake and pasture DM intake were higher in the group supplemented with concentrate, and the same was observed for the digestibility of DM and NDFap consumed by the animals. The average cow milk yield was 5.33 kg/day, with average protein and fat contents of 3.51% and 4.85%, respectively. In conclusion, compared to the use of mineral mixture only, multiple supplementation at different levels containing 100 g of CP does not significantly improve performance in lactating beef heifers grazing on Urochloa decumbens Stapf and supplemented during the rainy-dry transition season. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-16 |
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/36023 10.5433/1679-0359.2019v40n6Supl3p3719 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/36023 |
identifier_str_mv |
10.5433/1679-0359.2019v40n6Supl3p3719 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/36023/26251 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
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. 40 No. 6Supl3 (2019); 3719-3728 Semina: Ciências Agrárias; v. 40 n. 6Supl3 (2019); 3719-3728 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_ |
1799306081104560128 |