Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season

Detalhes bibliográficos
Autor(a) principal: Mendonça, Bruno Pietsch Cunha
Data de Publicação: 2010
Outros Autores: Lana, Rogério de Paula, Mancio, Antonio Bento, Detmann, Edenio, Barbosa, Analívia Martins, Guimarães, Geicimara
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1590/S1516-35982010001000025
http://www.locus.ufv.br/handle/123456789/14831
Resumo: It was evaluated several levels of mineral mixture and urea for crossbred heifers, with Gyr predominance, in the dry season period in Zona da Mata region in Minas Gerais. The experiment was carried out in a Brachiaria decumbens pasture area, divided in five paddocks of 3.5 hectares. It was used 35 heifers distributed in a 2 × 2 + 1 factorial scheme, composed of two levels of urea (10 and 25%), two levels of mineral salt (10 and 25%) and a control diet (only mineral salt), totaling five diets, each one evaluated with seven replicates. The supplements were based on ground corn, urea, ammonia sulfate and mineral mixture with 32 to 72% crude protein, and they composed the following diets: MM ( mineral mix), 10:10 (10% mineral mix, 10% urea and 80% corn); 10:25 (10% mineral mix, 25% urea and 65% corn); 25:10 (25% mineral mix, 10% urea and 65% corn), and 25:25 (25% mineral mix, 25% urea and 50% corn). Urea and mineral salt are effective in controlling supplement intake by bovines growing on pastures during dry season because the higher their levels, the lower the intake of supplements. Diets with 25% urea and 10% mineral salt provided higher daily weight gain and higher weight gain:supplemment intake ratio.
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spelling Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry seasonNitrogen supplementRearingWeight gainIt was evaluated several levels of mineral mixture and urea for crossbred heifers, with Gyr predominance, in the dry season period in Zona da Mata region in Minas Gerais. The experiment was carried out in a Brachiaria decumbens pasture area, divided in five paddocks of 3.5 hectares. It was used 35 heifers distributed in a 2 × 2 + 1 factorial scheme, composed of two levels of urea (10 and 25%), two levels of mineral salt (10 and 25%) and a control diet (only mineral salt), totaling five diets, each one evaluated with seven replicates. The supplements were based on ground corn, urea, ammonia sulfate and mineral mixture with 32 to 72% crude protein, and they composed the following diets: MM ( mineral mix), 10:10 (10% mineral mix, 10% urea and 80% corn); 10:25 (10% mineral mix, 25% urea and 65% corn); 25:10 (25% mineral mix, 10% urea and 65% corn), and 25:25 (25% mineral mix, 25% urea and 50% corn). Urea and mineral salt are effective in controlling supplement intake by bovines growing on pastures during dry season because the higher their levels, the lower the intake of supplements. Diets with 25% urea and 10% mineral salt provided higher daily weight gain and higher weight gain:supplemment intake ratio.Avaliaram-se diversos níveis de mistura mineral e ureia para novilhas mestiças, com predominância de Gir, no período da seca na região da Zona da Mata de Minas Gerais. O experimento foi realizado em uma área de pastagem formada de Brachiaria decumbens, dividida em cinco piquetes de 3,5 ha. Utilizaram-se 35 novilhas distribuídas em um esquema fatorial tipo 2 × 2 + 1, composto de dois níveis de ureia (10 e 25%), dois níveis de sal mineral (10 e 25%) e uma dieta controle (somente sal mineral), totalizando cinco dietas, cada uma avaliada com sete repetições. Os suplementos foram à base de milho moído, ureia, sulfato de amônia e mistura mineral, com 32 a 72% de proteína bruta, e compuseram as seguintes dietas: MM (mistura mineral); 10:10 (10% de mistura mineral, 10% de ureia e 80% de milho); 10:25 (10% de mistura mineral, 25% de ureia e 65% de milho); 25:10 (25% de mistura mineral, 10% de ureia e 65% de milho); e 25:25 (25% de mistura mineral, 25% de ureia e 50% de milho). A ureia e o sal mineral são efetivos em controlar o consumo de suplemento por bovinos em crescimento em pastagem no período da seca, uma vez que, quanto maiores seus níveis, menor o consumo de suplementos. Dietas contendo 25% de ureia e 10% de sal mineral proporcionam maior ganho de peso diário e maior relação de ganho de peso:consumo de suplemento.Revista Brasileira de Zootecnia2017-12-12T12:43:43Z2017-12-12T12:43:43Z2010-03-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf18069290http://dx.doi.org/10.1590/S1516-35982010001000025http://www.locus.ufv.br/handle/123456789/14831engv. 39, n. 10, p. 2273-2280, Oct. 2010Mendonça, Bruno Pietsch CunhaLana, Rogério de PaulaMancio, Antonio BentoDetmann, EdenioBarbosa, Analívia MartinsGuimarães, Geicimarainfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T08:40:40Zoai:locus.ufv.br:123456789/14831Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T08:40:40LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
title Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
spellingShingle Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
Mendonça, Bruno Pietsch Cunha
Nitrogen supplement
Rearing
Weight gain
title_short Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
title_full Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
title_fullStr Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
title_full_unstemmed Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
title_sort Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
author Mendonça, Bruno Pietsch Cunha
author_facet Mendonça, Bruno Pietsch Cunha
Lana, Rogério de Paula
Mancio, Antonio Bento
Detmann, Edenio
Barbosa, Analívia Martins
Guimarães, Geicimara
author_role author
author2 Lana, Rogério de Paula
Mancio, Antonio Bento
Detmann, Edenio
Barbosa, Analívia Martins
Guimarães, Geicimara
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Mendonça, Bruno Pietsch Cunha
Lana, Rogério de Paula
Mancio, Antonio Bento
Detmann, Edenio
Barbosa, Analívia Martins
Guimarães, Geicimara
dc.subject.por.fl_str_mv Nitrogen supplement
Rearing
Weight gain
topic Nitrogen supplement
Rearing
Weight gain
description It was evaluated several levels of mineral mixture and urea for crossbred heifers, with Gyr predominance, in the dry season period in Zona da Mata region in Minas Gerais. The experiment was carried out in a Brachiaria decumbens pasture area, divided in five paddocks of 3.5 hectares. It was used 35 heifers distributed in a 2 × 2 + 1 factorial scheme, composed of two levels of urea (10 and 25%), two levels of mineral salt (10 and 25%) and a control diet (only mineral salt), totaling five diets, each one evaluated with seven replicates. The supplements were based on ground corn, urea, ammonia sulfate and mineral mixture with 32 to 72% crude protein, and they composed the following diets: MM ( mineral mix), 10:10 (10% mineral mix, 10% urea and 80% corn); 10:25 (10% mineral mix, 25% urea and 65% corn); 25:10 (25% mineral mix, 10% urea and 65% corn), and 25:25 (25% mineral mix, 25% urea and 50% corn). Urea and mineral salt are effective in controlling supplement intake by bovines growing on pastures during dry season because the higher their levels, the lower the intake of supplements. Diets with 25% urea and 10% mineral salt provided higher daily weight gain and higher weight gain:supplemment intake ratio.
publishDate 2010
dc.date.none.fl_str_mv 2010-03-09
2017-12-12T12:43:43Z
2017-12-12T12:43:43Z
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 18069290
http://dx.doi.org/10.1590/S1516-35982010001000025
http://www.locus.ufv.br/handle/123456789/14831
identifier_str_mv 18069290
url http://dx.doi.org/10.1590/S1516-35982010001000025
http://www.locus.ufv.br/handle/123456789/14831
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv v. 39, n. 10, p. 2273-2280, Oct. 2010
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Revista Brasileira de Zootecnia
publisher.none.fl_str_mv Revista Brasileira de Zootecnia
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
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