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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
13/08/2023 |
Data da última atualização: |
13/08/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SILVA, C. S. da; LEÃO, J. M.; LAGE, C. F. A.; COELHO, S. G.; CAMPOS, M. M. |
Afiliação: |
CAMILA S. DA SILVA; JULIANA M. LEÃO, The Saskatoon Colostrum Company; CAMILA F. A. LAGE, Cornell Cooperative Extension; SANDRA G. COELHO, Universidade Federal de Minas Gerais; MARIANA MAGALHAES CAMPOS, CNPGL. |
Título: |
Residual feed intake as an efficiency metric for pre-weaning dairy calves: what do we know? |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Life, v. 13, 1727, 2023. |
DOI: |
https://doi.org/10.3390/life13081727 |
Idioma: |
Inglês |
Conteúdo: |
Dairy cattle systems have targeted improvements in feed efficiency by selecting animals that can convert less feed into more products. Residual feed intake (RFI) has been the index of choice when selecting dairy cattle for feed efficiency. Nonetheless, RFI studies have focused on lactating cows, and the crucial importance of pre-weaning efficiency on farm profitability and cow productivity has been mostly neglected. This review discusses the current knowledge of how RFI divergence relates to nutrient metabolism in pre-weaning dairy calves, including the advantages and limitations of evaluating RFI in this phase. Existing literature indicates that nutrient utilization, energy metabolism, protein metabolism, vitamin metabolism, intestinal development, and hindgut bacterial populations may be implicated in RFI divergence between pre-weaning calves. Techniques developed to date to evaluate RFI in this phase are still evolving to better adapt to the unique characteristics of this phase, and more research is needed to fill in the gaps in our current understanding of early-life feed efficiency divergence in cattle. However, current results suggest great potential for selecting high-efficiency calves while in pre-weaning to accelerate the progress of genetic selection in dairy cattle. |
Palavras-Chave: |
Desmame; Teste de eficiência. |
Thesagro: |
Bezerro Leiteiro; Gado Leiteiro. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1155878/1/Residual-feed-intake-as-an-efficiency-metric.pdf
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Marc: |
LEADER 01963naa a2200229 a 4500 001 2155878 005 2023-08-13 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3390/life13081727$2DOI 100 1 $aSILVA, C. S. da 245 $aResidual feed intake as an efficiency metric for pre-weaning dairy calves$bwhat do we know?$h[electronic resource] 260 $c2023 520 $aDairy cattle systems have targeted improvements in feed efficiency by selecting animals that can convert less feed into more products. Residual feed intake (RFI) has been the index of choice when selecting dairy cattle for feed efficiency. Nonetheless, RFI studies have focused on lactating cows, and the crucial importance of pre-weaning efficiency on farm profitability and cow productivity has been mostly neglected. This review discusses the current knowledge of how RFI divergence relates to nutrient metabolism in pre-weaning dairy calves, including the advantages and limitations of evaluating RFI in this phase. Existing literature indicates that nutrient utilization, energy metabolism, protein metabolism, vitamin metabolism, intestinal development, and hindgut bacterial populations may be implicated in RFI divergence between pre-weaning calves. Techniques developed to date to evaluate RFI in this phase are still evolving to better adapt to the unique characteristics of this phase, and more research is needed to fill in the gaps in our current understanding of early-life feed efficiency divergence in cattle. However, current results suggest great potential for selecting high-efficiency calves while in pre-weaning to accelerate the progress of genetic selection in dairy cattle. 650 $aBezerro Leiteiro 650 $aGado Leiteiro 653 $aDesmame 653 $aTeste de eficiência 700 1 $aLEÃO, J. M. 700 1 $aLAGE, C. F. A. 700 1 $aCOELHO, S. G. 700 1 $aCAMPOS, M. M. 773 $tLife$gv. 13, 1727, 2023.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
10/03/2000 |
Data da última atualização: |
03/12/2019 |
Autoria: |
MACEDO, A. C. B.; COUTO, L. F. C. dos; MAUES, M. M. |
Afiliação: |
MARCIA MOTTA MAUES, CPATU. |
Título: |
Aspectos da biologia reprodutiva de três especies florestais amazônicas: cumaru (Dipteryx odorata (Aubl) Wild. Leguminosae), marupa (Simarouba amara Aubl. Simaroubaceae) e sucupira do igapo (Diplotropis martiusii (Benth) Leguminosae). |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA FCAP, 9.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 3., 1999, Belém. Resumos. Belém: FCAP: Embrapa Amazônia Oriental, 1999. |
Páginas: |
p. 128-130. |
Idioma: |
Português |
Palavras-Chave: |
Biologia reprodutiva; Biology; Diplotropis martiusii; Polinizador; Sucupira do igapo. |
Thesagro: |
Cumaru; Dipteryx Odorata; Marupá; Polinização; Simarouba Amara. |
Thesaurus NAL: |
pollination; pollinators; reproduction. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206064/1/Aspectos-da-biologia-reprodutiva.pdf
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Marc: |
LEADER 01103nam a2200289 a 4500 001 1395126 005 2019-12-03 008 1999 bl uuuu u00u1 u #d 100 1 $aMACEDO, A. C. B. 245 $aAspectos da biologia reprodutiva de três especies florestais amazônicas$bcumaru (Dipteryx odorata (Aubl) Wild. Leguminosae), marupa (Simarouba amara Aubl. Simaroubaceae) e sucupira do igapo (Diplotropis martiusii (Benth) Leguminosae). 260 $aIn: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA FCAP, 9.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 3., 1999, Belém. Resumos. Belém: FCAP: Embrapa Amazônia Oriental$c1999 300 $ap. 128-130. 650 $apollination 650 $apollinators 650 $areproduction 650 $aCumaru 650 $aDipteryx Odorata 650 $aMarupá 650 $aPolinização 650 $aSimarouba Amara 653 $aBiologia reprodutiva 653 $aBiology 653 $aDiplotropis martiusii 653 $aPolinizador 653 $aSucupira do igapo 700 1 $aCOUTO, L. F. C. dos 700 1 $aMAUES, M. M.
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