Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/14918 |
Resumo: | This study aimed at providing livestock farmers adequate feeding systems to Nelore and Canchim breeds, and Holstein-Zebu crossbreed growing heifers. All animals received, during a certain period, three types of ration, with the following proportions of roughage concentrate: 30/70 (R1), 50/50 (R2) and 60/40 (R3). The concentrate contained 18% crude protein (CP) and sugarcane was used as the roughage source. Thirty nine heifers were used, thirteen from each breed or crossbreeding, with and average weight of 210 kg and twelve months of age. The marker method (Cr2O3) was used for digestibility coefficient determination using a fourteen day pre-experimental period and a seven day experimental period. A significant (P<0.01) breed x ration interation was observed for the crude fiber (CE) digestibility. Nelore tended to be superior to Canchim and crossbreed in utilization efficiency of dry matter, cellulose and gross-energy in ration R1, In rations R2 and R3, there was and opposite tendency. CP digestibility was significantly (P<0.01) higher for the crossbreed than for the Nelore breed in all these rations. There was a tendency for the Nelore breed to retain less nitrogen, as the proportion of concentrate increased, as opposed to that in the crossbreed and Canchim heifers. |
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Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifersEficiência de utilização de nutrientes pelas raças Nelore e Canchim e mestiços holandês-zebudigestibility coefficient; dry matter; nitrogen balancecoeficiente de digestibilidade; matéria seca; balanço de nitrogênioThis study aimed at providing livestock farmers adequate feeding systems to Nelore and Canchim breeds, and Holstein-Zebu crossbreed growing heifers. All animals received, during a certain period, three types of ration, with the following proportions of roughage concentrate: 30/70 (R1), 50/50 (R2) and 60/40 (R3). The concentrate contained 18% crude protein (CP) and sugarcane was used as the roughage source. Thirty nine heifers were used, thirteen from each breed or crossbreeding, with and average weight of 210 kg and twelve months of age. The marker method (Cr2O3) was used for digestibility coefficient determination using a fourteen day pre-experimental period and a seven day experimental period. A significant (P<0.01) breed x ration interation was observed for the crude fiber (CE) digestibility. Nelore tended to be superior to Canchim and crossbreed in utilization efficiency of dry matter, cellulose and gross-energy in ration R1, In rations R2 and R3, there was and opposite tendency. CP digestibility was significantly (P<0.01) higher for the crossbreed than for the Nelore breed in all these rations. There was a tendency for the Nelore breed to retain less nitrogen, as the proportion of concentrate increased, as opposed to that in the crossbreed and Canchim heifers.Este estudo visa fornecer ao produtor sistemas de alimentação adequados às raças Nelore e Canchim e a mestiços Holandês-Zebu. Foram fornecidas aos animais rações (tratamentos) cujas relações concentrado-volumoso foram 30:70(R1), 50:50(R2) e 60:40(R3). O concentrado, apresentava 18% de proteína bruta e o volumoso usado foi cana-de-açúcar. Foram utilizadas 39 novilhas, sendo treze para cada grupo genético, com 210 kg de peso médio e doze meses de idade média. Para determinação dos coeficientes de digestibilidade utilizou-se o método dos indicadores (Cr2O3). O período pré-experimental foi de quatorze dias e sete dias o experimental. Houve interação (P<0,01) grupo genético x tratamento na digestibilidade da fibra bruta (FB). Verificou-se tendência de superioridade do Nelore em relação ao Canchim e ao mestiço na eficiência da utilização da matéria seca, celulose e energia bruta no tratamento R1. Esta tendência, contudo, foi invertida nos tratamentos R2 e R3. A digestibilidade da proteína bruta foi significativamente (P<0,01) superior no mestiço quando comparado ao Nelore nos três tratamentos. A raça Nelore mostrou tendência a reter menos nitrogênio à medida que a qualidade da ração melhorava, ao contrário do que ocorreu com o Canchim e o mestiço.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraManzano, AirtonNovaes, Nelson JoséEsteves, Sérgio Novita2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/14918Pesquisa Agropecuaria Brasileira; v.22, n.8, ago. 1987; 873-880Pesquisa Agropecuária Brasileira; v.22, n.8, ago. 1987; 873-8801678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/14918/8619info:eu-repo/semantics/openAccess2014-10-10T16:48:28Zoai:ojs.seer.sct.embrapa.br:article/14918Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-10T16:48:28Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers Eficiência de utilização de nutrientes pelas raças Nelore e Canchim e mestiços holandês-zebu |
title |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers |
spellingShingle |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers Manzano, Airton digestibility coefficient; dry matter; nitrogen balance coeficiente de digestibilidade; matéria seca; balanço de nitrogênio |
title_short |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers |
title_full |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers |
title_fullStr |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers |
title_full_unstemmed |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers |
title_sort |
Efficiency of nutrient utilization by Nelore and Canchim breeds, and Holstein-zebu crossbreed heifers |
author |
Manzano, Airton |
author_facet |
Manzano, Airton Novaes, Nelson José Esteves, Sérgio Novita |
author_role |
author |
author2 |
Novaes, Nelson José Esteves, Sérgio Novita |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Manzano, Airton Novaes, Nelson José Esteves, Sérgio Novita |
dc.subject.por.fl_str_mv |
digestibility coefficient; dry matter; nitrogen balance coeficiente de digestibilidade; matéria seca; balanço de nitrogênio |
topic |
digestibility coefficient; dry matter; nitrogen balance coeficiente de digestibilidade; matéria seca; balanço de nitrogênio |
description |
This study aimed at providing livestock farmers adequate feeding systems to Nelore and Canchim breeds, and Holstein-Zebu crossbreed growing heifers. All animals received, during a certain period, three types of ration, with the following proportions of roughage concentrate: 30/70 (R1), 50/50 (R2) and 60/40 (R3). The concentrate contained 18% crude protein (CP) and sugarcane was used as the roughage source. Thirty nine heifers were used, thirteen from each breed or crossbreeding, with and average weight of 210 kg and twelve months of age. The marker method (Cr2O3) was used for digestibility coefficient determination using a fourteen day pre-experimental period and a seven day experimental period. A significant (P<0.01) breed x ration interation was observed for the crude fiber (CE) digestibility. Nelore tended to be superior to Canchim and crossbreed in utilization efficiency of dry matter, cellulose and gross-energy in ration R1, In rations R2 and R3, there was and opposite tendency. CP digestibility was significantly (P<0.01) higher for the crossbreed than for the Nelore breed in all these rations. There was a tendency for the Nelore breed to retain less nitrogen, as the proportion of concentrate increased, as opposed to that in the crossbreed and Canchim heifers. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/14918 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/14918 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/14918/8619 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.22, n.8, ago. 1987; 873-880 Pesquisa Agropecuária Brasileira; v.22, n.8, ago. 1987; 873-880 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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