Energy and protein requirements of young Holstein calves in tropical condition.

Detalhes bibliográficos
Autor(a) principal: RODRIGUES, J. P. P.
Data de Publicação: 2016
Outros Autores: LIMA, J. C. M., CASTRO, M. M. D., VALADARES FILHO, S. de C., CAMPOS, M. M., CHIZOTTI, M. L., MARCONDES, M. I.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058344
Resumo: Our objective was to estimate the energy and protein requirements of Holstein young calves up to 87 days old. Forty-two Holstein calves aged 4 days were used. From these, ten were randomly selected and slaughtered to compose the baseline slaughter (BS) group. The remaining calves were randomly assigned to eight treatments in a 4 × 2 factorial using a completely randomized design. The treatments were 2, 4, 6, and 8 kg/day of milk (297 g/kg CP; 319 g/kg of fat) fed twice daily, and then harvested at 59 or 87 days of age. Calves were fed a starter (193 g/kg CP; 133 g/kg NDF) ad libitum in all treatments. The calves slaughtered at 87 days of age had milk replaced by Coast-cross (Cynodoon sp.) hay (125 g/kg CP; 728 g/kg NDF). The net requirement of energy for maintenance (NEm) was 0.36 MJ/kg EBWG, with efficiency of utilization of energy for maintenance (km) of 59.4 %. The equation obtained to estimate the net requirement of energy for gain (NEg; MJ/d) was 4.40 × EBW0.099, with the efficiency of utilization of energy for gain (kg) equal to 46.5 %. The observed requirements of net and metabolizable protein for maintenance (NPm and MPm) were 3.67 and 3.88 g/kg BW0.75, respectively. The efficiency of use of metabolizable protein for maintenance (kpm) was 94.6 %. The predicted requirements were higher than those observed in the literature, and this study demonstrated that the requirements of newborn calves are higher than the recommended.
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spelling Energy and protein requirements of young Holstein calves in tropical condition.Comparative slaughterEfficiency of utilizationGrowthMaintenanceMetabolizable proteinDairy calvesHolsteinSlaughtermetabolizable energyOur objective was to estimate the energy and protein requirements of Holstein young calves up to 87 days old. Forty-two Holstein calves aged 4 days were used. From these, ten were randomly selected and slaughtered to compose the baseline slaughter (BS) group. The remaining calves were randomly assigned to eight treatments in a 4 × 2 factorial using a completely randomized design. The treatments were 2, 4, 6, and 8 kg/day of milk (297 g/kg CP; 319 g/kg of fat) fed twice daily, and then harvested at 59 or 87 days of age. Calves were fed a starter (193 g/kg CP; 133 g/kg NDF) ad libitum in all treatments. The calves slaughtered at 87 days of age had milk replaced by Coast-cross (Cynodoon sp.) hay (125 g/kg CP; 728 g/kg NDF). The net requirement of energy for maintenance (NEm) was 0.36 MJ/kg EBWG, with efficiency of utilization of energy for maintenance (km) of 59.4 %. The equation obtained to estimate the net requirement of energy for gain (NEg; MJ/d) was 4.40 × EBW0.099, with the efficiency of utilization of energy for gain (kg) equal to 46.5 %. The observed requirements of net and metabolizable protein for maintenance (NPm and MPm) were 3.67 and 3.88 g/kg BW0.75, respectively. The efficiency of use of metabolizable protein for maintenance (kpm) was 94.6 %. The predicted requirements were higher than those observed in the literature, and this study demonstrated that the requirements of newborn calves are higher than the recommended.João Paulo Pacheco Rodrigues, UFV; Jessika Carolina Moutinho Lima, UFV; Marcelo Messias Duarte Castro, UFV; Sebastião de Campos Valadares Filho, UFV; MARIANA MAGALHAES CAMPOS, CNPGL; Mário Luiz Chizzotti, UFV; Marcos Inácio Marcondes, UFV.RODRIGUES, J. P. P.LIMA, J. C. M.CASTRO, M. M. D.VALADARES FILHO, S. de C.CAMPOS, M. M.CHIZOTTI, M. L.MARCONDES, M. I.2016-12-09T11:11:11Z2016-12-09T11:11:11Z2016-12-0920162017-02-22T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleTropical Animal Health and Production, n. 48, p. 1387-1394, 2016.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058344enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T03:54:35Zoai:www.alice.cnptia.embrapa.br:doc/1058344Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T03:54:35Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Energy and protein requirements of young Holstein calves in tropical condition.
title Energy and protein requirements of young Holstein calves in tropical condition.
spellingShingle Energy and protein requirements of young Holstein calves in tropical condition.
RODRIGUES, J. P. P.
Comparative slaughter
Efficiency of utilization
Growth
Maintenance
Metabolizable protein
Dairy calves
Holstein
Slaughter
metabolizable energy
title_short Energy and protein requirements of young Holstein calves in tropical condition.
title_full Energy and protein requirements of young Holstein calves in tropical condition.
title_fullStr Energy and protein requirements of young Holstein calves in tropical condition.
title_full_unstemmed Energy and protein requirements of young Holstein calves in tropical condition.
title_sort Energy and protein requirements of young Holstein calves in tropical condition.
author RODRIGUES, J. P. P.
author_facet RODRIGUES, J. P. P.
LIMA, J. C. M.
CASTRO, M. M. D.
VALADARES FILHO, S. de C.
CAMPOS, M. M.
CHIZOTTI, M. L.
MARCONDES, M. I.
author_role author
author2 LIMA, J. C. M.
CASTRO, M. M. D.
VALADARES FILHO, S. de C.
CAMPOS, M. M.
CHIZOTTI, M. L.
MARCONDES, M. I.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv João Paulo Pacheco Rodrigues, UFV; Jessika Carolina Moutinho Lima, UFV; Marcelo Messias Duarte Castro, UFV; Sebastião de Campos Valadares Filho, UFV; MARIANA MAGALHAES CAMPOS, CNPGL; Mário Luiz Chizzotti, UFV; Marcos Inácio Marcondes, UFV.
dc.contributor.author.fl_str_mv RODRIGUES, J. P. P.
LIMA, J. C. M.
CASTRO, M. M. D.
VALADARES FILHO, S. de C.
CAMPOS, M. M.
CHIZOTTI, M. L.
MARCONDES, M. I.
dc.subject.por.fl_str_mv Comparative slaughter
Efficiency of utilization
Growth
Maintenance
Metabolizable protein
Dairy calves
Holstein
Slaughter
metabolizable energy
topic Comparative slaughter
Efficiency of utilization
Growth
Maintenance
Metabolizable protein
Dairy calves
Holstein
Slaughter
metabolizable energy
description Our objective was to estimate the energy and protein requirements of Holstein young calves up to 87 days old. Forty-two Holstein calves aged 4 days were used. From these, ten were randomly selected and slaughtered to compose the baseline slaughter (BS) group. The remaining calves were randomly assigned to eight treatments in a 4 × 2 factorial using a completely randomized design. The treatments were 2, 4, 6, and 8 kg/day of milk (297 g/kg CP; 319 g/kg of fat) fed twice daily, and then harvested at 59 or 87 days of age. Calves were fed a starter (193 g/kg CP; 133 g/kg NDF) ad libitum in all treatments. The calves slaughtered at 87 days of age had milk replaced by Coast-cross (Cynodoon sp.) hay (125 g/kg CP; 728 g/kg NDF). The net requirement of energy for maintenance (NEm) was 0.36 MJ/kg EBWG, with efficiency of utilization of energy for maintenance (km) of 59.4 %. The equation obtained to estimate the net requirement of energy for gain (NEg; MJ/d) was 4.40 × EBW0.099, with the efficiency of utilization of energy for gain (kg) equal to 46.5 %. The observed requirements of net and metabolizable protein for maintenance (NPm and MPm) were 3.67 and 3.88 g/kg BW0.75, respectively. The efficiency of use of metabolizable protein for maintenance (kpm) was 94.6 %. The predicted requirements were higher than those observed in the literature, and this study demonstrated that the requirements of newborn calves are higher than the recommended.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-09T11:11:11Z
2016-12-09T11:11:11Z
2016-12-09
2016
2017-02-22T11:11:11Z
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 Tropical Animal Health and Production, n. 48, p. 1387-1394, 2016.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058344
identifier_str_mv Tropical Animal Health and Production, n. 48, p. 1387-1394, 2016.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058344
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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