Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600025 |
Resumo: | The objective of this work was to evaluate the effects of three levels of concentrate (2.0, 4.0 and 6.0 kg/cow/day) and two levels of crude protein (CP) (14 and 16% total dietary dry matter), in comparison to mineral mixture (control) on the intake, apparent digestibility, milk composition and yield and on feed efficiency and use of concentrates of cows grazing elephant grass (Pennisetum purpureum, Schum) in the rainy season. Twenty-one milking Gyr cows with average body weight of 426 kg and yield of 13.0 kg of milk/cow/day at 55 days of lactation were distributed in randomized blocks design, with seven diets (treatments) in a 3 × 2 + 1 factorial arrangement and three replications, in a period of 84 days. Forage dry matter intake was not influenced by the diets, but total dietary dry matter intake increased by 45% with the inclusion of concentrate in the diet. However, milk yield increased by only 17% (1.76 kg more milk per day) with the use of concentrate. For dairy Gyr cows grazing elephant-grass during the rainy season, 2 kg of concentrate/cow/day and 14% of CP in the total diet provided the best productive response without harming body weight. |
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Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy seasonconcentrate rationelephant grassintakemilkproductionproteinThe objective of this work was to evaluate the effects of three levels of concentrate (2.0, 4.0 and 6.0 kg/cow/day) and two levels of crude protein (CP) (14 and 16% total dietary dry matter), in comparison to mineral mixture (control) on the intake, apparent digestibility, milk composition and yield and on feed efficiency and use of concentrates of cows grazing elephant grass (Pennisetum purpureum, Schum) in the rainy season. Twenty-one milking Gyr cows with average body weight of 426 kg and yield of 13.0 kg of milk/cow/day at 55 days of lactation were distributed in randomized blocks design, with seven diets (treatments) in a 3 × 2 + 1 factorial arrangement and three replications, in a period of 84 days. Forage dry matter intake was not influenced by the diets, but total dietary dry matter intake increased by 45% with the inclusion of concentrate in the diet. However, milk yield increased by only 17% (1.76 kg more milk per day) with the use of concentrate. For dairy Gyr cows grazing elephant-grass during the rainy season, 2 kg of concentrate/cow/day and 14% of CP in the total diet provided the best productive response without harming body weight.Sociedade Brasileira de Zootecnia2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600025Revista Brasileira de Zootecnia v.40 n.6 2011reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982011000600025info:eu-repo/semantics/openAccessTeixeira,Rafael Monteiro AraújoLana,Rogério de PaulaFernandes,Leonardo de OliveiraOliveira,André Soares deCampos,José Maurício de SouzaPimentel,Joabe Jobson de Oliveiraeng2011-07-04T00:00:00Zoai:scielo:S1516-35982011000600025Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2011-07-04T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season |
title |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season |
spellingShingle |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season Teixeira,Rafael Monteiro Araújo concentrate ration elephant grass intake milk production protein |
title_short |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season |
title_full |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season |
title_fullStr |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season |
title_full_unstemmed |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season |
title_sort |
Concentrate and crude protein levels in diets for dairy Gyr lineage cows grazing elephant-grass during the rainy season |
author |
Teixeira,Rafael Monteiro Araújo |
author_facet |
Teixeira,Rafael Monteiro Araújo Lana,Rogério de Paula Fernandes,Leonardo de Oliveira Oliveira,André Soares de Campos,José Maurício de Souza Pimentel,Joabe Jobson de Oliveira |
author_role |
author |
author2 |
Lana,Rogério de Paula Fernandes,Leonardo de Oliveira Oliveira,André Soares de Campos,José Maurício de Souza Pimentel,Joabe Jobson de Oliveira |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Teixeira,Rafael Monteiro Araújo Lana,Rogério de Paula Fernandes,Leonardo de Oliveira Oliveira,André Soares de Campos,José Maurício de Souza Pimentel,Joabe Jobson de Oliveira |
dc.subject.por.fl_str_mv |
concentrate ration elephant grass intake milk production protein |
topic |
concentrate ration elephant grass intake milk production protein |
description |
The objective of this work was to evaluate the effects of three levels of concentrate (2.0, 4.0 and 6.0 kg/cow/day) and two levels of crude protein (CP) (14 and 16% total dietary dry matter), in comparison to mineral mixture (control) on the intake, apparent digestibility, milk composition and yield and on feed efficiency and use of concentrates of cows grazing elephant grass (Pennisetum purpureum, Schum) in the rainy season. Twenty-one milking Gyr cows with average body weight of 426 kg and yield of 13.0 kg of milk/cow/day at 55 days of lactation were distributed in randomized blocks design, with seven diets (treatments) in a 3 × 2 + 1 factorial arrangement and three replications, in a period of 84 days. Forage dry matter intake was not influenced by the diets, but total dietary dry matter intake increased by 45% with the inclusion of concentrate in the diet. However, milk yield increased by only 17% (1.76 kg more milk per day) with the use of concentrate. For dairy Gyr cows grazing elephant-grass during the rainy season, 2 kg of concentrate/cow/day and 14% of CP in the total diet provided the best productive response without harming body weight. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 |
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=S1516-35982011000600025 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600025 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982011000600025 |
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 |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.40 n.6 2011 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
_version_ |
1750318147900014592 |