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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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Embrapa Gado de Leite (CNPGL) |
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44. | | URQUIAGA, S.; BODDEY, R. M.; NEVES, M. C. P. A necessidade de uma revolucao mais verde. In: SIQUEIRA, J.O.; MOREIRA, F.M.S.; LOPES, A.S.; GUILHERME, L.R.G.; FAQUIN, V.; FURTINI NETO, A.E.; CARVALHO, J.G., eds. Inter-relacao fertilidade, biologia do solo e nutricao de plantas. Vicosa: SBCS; Lavras: UFLA/DCS, 1999. p.175-182.Biblioteca(s): Embrapa Agrobiologia. |
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45. | | URQUIAGA, S.; BODDEY, R. M.; NEVES, M. C. P. A necessidade de uma revolução mais verde. In: SIQUEIRA, J. O.; MOREIRA, F. M. S.; LOPES, A. S.; GUILHERME, L. R. G.; FAQUIN, V.; FURTINI NETO, A. E.; CARVALHO, J. G.(Ed.). Inter-relação fertilidade, biologia do solo e nutrição de plantas. Viçosa: SBCS; Lavras: UFLA/DCS, 1999. p. 175-182.Biblioteca(s): Embrapa Agrobiologia. |
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55. | | MOURA, A. B.; ROMEIRO, R. da S.; NEVES, M. C. P. Bioensaio para avaliação massal de actinomicetos antagonistas a Ralstonia solanacearum, em tomateiro. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 33, n. 12, p. 2065-2072, dez. 1998. Notas Científicas.
Título em inglês: Biossay for massal assessing of antagonistic actinomycetes against solanacearum on tomato crop.Biblioteca(s): Embrapa Unidades Centrais. |
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