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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
13/01/2020 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LAGE, C. F. DE A.; COELHO, S. G.; DINIZ NETO, H. DO C.; MALACCO, V. M. R.; RODRIGUES, J. P. P.; SACRAMENTO, J. P.; MACHADO, F. S.; PEREIRA, L. G. R.; TOMICH, T. R.; CAMPOS, M. M. |
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Afiliação: |
Camila Flávia de Assis Lage; Sandra Gesteira Coelho; Hilton do Carmo Diniz Neto; Victor Marco Rocha Malacco; João Paulo Pacheco Rodrigues; João Paulo Sacramento; FERNANDA SAMARINI MACHADO, CNPGL; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; MARIANA MAGALHAES CAMPOS, CNPGL. |
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Título: |
Relationship between feed efficiency indexes and performance, body measurements, digestibility, energy partitioning, and nitrogen partitioning in pre-weaning dairy heifers. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Plos One, v. 14, n. 10, article e0223368, 2019. |
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DOI: |
https://doi.org/10.1371/journal.pone.0223368 |
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Idioma: |
Inglês |
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Conteúdo: |
The objectives of this study were: 1) to classify animals into groups of high and low feed efficiency using two feed efficiency indexes (Residual feed intake (RFI) and residual feed intake and body weight gain (RIG)), and 2) to evaluate if pre-weaning heifer calves divergent for feed efficiency indexes exhibit differences in performance, body measurements, digestibility, energy partitioning, and nitrogen partitioning. A total of 32 Gyr heifer calves were enrolled in a 63-d trial and classified into two feed efficiency (FE) groups based on RFI and RIG (mean ± 0.5 SD). The groups were classified as high efficiency (HE) RFI (HE RFI, n = 9; HE RIG, n = 10), and low efficiency (LE) RFI (LE RFI, n = 10; LE RIG, n = 11). The remaining animals were classified as intermediate (n = 13 (RFI) and n = 11 (RIG)). HE and LE calves had RFI values of?0.052 and 0.049 kg/d (P < 0.05), respectively. The HE RFI group consumed 8.9% less solid diet than the LE RFI group. HE RFI animals exhibited an increased digestibility of crude protein and ether extract and tended to have greater total dry and organic matter digestibility. LE RFI animals had greater gross energy and nitrogen intake, though greater fecal losses resulted in a tendency to reduce energy and nitrogen use efficiency. HE and LE calves had RIG values of 0.080 and -0.077kg/d (P ? 0.01), respectively. HE RIG animals exhibited greater average daily gain (9.4%), body weight (BW), and heart girth, though HE RIG group exhibited narrower hip width. HE RIG animals tended to have greater ether extract digestibility but greater methane losses (% of gross energy). HE RFI in pre-weaning heifers seems to be related to differences in digestibility. Divergent animals for RIG during the assessed phase appear to differ in body measurements, which may be related to differences in the composition of the gain. MenosThe objectives of this study were: 1) to classify animals into groups of high and low feed efficiency using two feed efficiency indexes (Residual feed intake (RFI) and residual feed intake and body weight gain (RIG)), and 2) to evaluate if pre-weaning heifer calves divergent for feed efficiency indexes exhibit differences in performance, body measurements, digestibility, energy partitioning, and nitrogen partitioning. A total of 32 Gyr heifer calves were enrolled in a 63-d trial and classified into two feed efficiency (FE) groups based on RFI and RIG (mean ± 0.5 SD). The groups were classified as high efficiency (HE) RFI (HE RFI, n = 9; HE RIG, n = 10), and low efficiency (LE) RFI (LE RFI, n = 10; LE RIG, n = 11). The remaining animals were classified as intermediate (n = 13 (RFI) and n = 11 (RIG)). HE and LE calves had RFI values of?0.052 and 0.049 kg/d (P < 0.05), respectively. The HE RFI group consumed 8.9% less solid diet than the LE RFI group. HE RFI animals exhibited an increased digestibility of crude protein and ether extract and tended to have greater total dry and organic matter digestibility. LE RFI animals had greater gross energy and nitrogen intake, though greater fecal losses resulted in a tendency to reduce energy and nitrogen use efficiency. HE and LE calves had RIG values of 0.080 and -0.077kg/d (P ? 0.01), respectively. HE RIG animals exhibited greater average daily gain (9.4%), body weight (BW), and heart girth, though HE RIG group exhibited narrower hip ... Mostrar Tudo |
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Palavras-Chave: |
Bioenergetics; Feed efficiency; Hip. |
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Thesaurus Nal: |
Diet; Methane; Milk; Nutrients. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208602/1/Artigo-PlosOne-Samarini-Relationship.pdf
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Marc: |
LEADER 02870naa a2200325 a 4500
001 2118613
005 2024-02-06
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1371/journal.pone.0223368$2DOI
100 1 $aLAGE, C. F. DE A.
245 $aRelationship between feed efficiency indexes and performance, body measurements, digestibility, energy partitioning, and nitrogen partitioning in pre-weaning dairy heifers.$h[electronic resource]
260 $c2019
520 $aThe objectives of this study were: 1) to classify animals into groups of high and low feed efficiency using two feed efficiency indexes (Residual feed intake (RFI) and residual feed intake and body weight gain (RIG)), and 2) to evaluate if pre-weaning heifer calves divergent for feed efficiency indexes exhibit differences in performance, body measurements, digestibility, energy partitioning, and nitrogen partitioning. A total of 32 Gyr heifer calves were enrolled in a 63-d trial and classified into two feed efficiency (FE) groups based on RFI and RIG (mean ± 0.5 SD). The groups were classified as high efficiency (HE) RFI (HE RFI, n = 9; HE RIG, n = 10), and low efficiency (LE) RFI (LE RFI, n = 10; LE RIG, n = 11). The remaining animals were classified as intermediate (n = 13 (RFI) and n = 11 (RIG)). HE and LE calves had RFI values of?0.052 and 0.049 kg/d (P < 0.05), respectively. The HE RFI group consumed 8.9% less solid diet than the LE RFI group. HE RFI animals exhibited an increased digestibility of crude protein and ether extract and tended to have greater total dry and organic matter digestibility. LE RFI animals had greater gross energy and nitrogen intake, though greater fecal losses resulted in a tendency to reduce energy and nitrogen use efficiency. HE and LE calves had RIG values of 0.080 and -0.077kg/d (P ? 0.01), respectively. HE RIG animals exhibited greater average daily gain (9.4%), body weight (BW), and heart girth, though HE RIG group exhibited narrower hip width. HE RIG animals tended to have greater ether extract digestibility but greater methane losses (% of gross energy). HE RFI in pre-weaning heifers seems to be related to differences in digestibility. Divergent animals for RIG during the assessed phase appear to differ in body measurements, which may be related to differences in the composition of the gain.
650 $aDiet
650 $aMethane
650 $aMilk
650 $aNutrients
653 $aBioenergetics
653 $aFeed efficiency
653 $aHip
700 1 $aCOELHO, S. G.
700 1 $aDINIZ NETO, H. DO C.
700 1 $aMALACCO, V. M. R.
700 1 $aRODRIGUES, J. P. P.
700 1 $aSACRAMENTO, J. P.
700 1 $aMACHADO, F. S.
700 1 $aPEREIRA, L. G. R.
700 1 $aTOMICH, T. R.
700 1 $aCAMPOS, M. M.
773 $tPlos One$gv. 14, n. 10, article e0223368, 2019.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
30/07/2002 |
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Data da última atualização: |
18/02/2021 |
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Autoria: |
OLIVEIRA, L. A. A. de; SOUZA FILHO, B. F. de. |
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Título: |
Avaliação de cultivares de milho no norte fluminense. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v.17, n.11, p.1603-1606, nov. 1982. |
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Idioma: |
Português |
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Notas: |
Título em inglês: Evaluation of corn cultivars in the state of Rio de Janeiro. |
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Conteúdo: |
RESUMO - Foi estudado, no norte fluminense, em duas diferentes localidades, o desempenho de cultivares de milho (Zea mays L.) durante o ano agrícola 1978/1979. Em cada ensaio foram testadas dez cultivares de milho normal e precoce. 0 delineamento foi o de blocos ao acaso, com quatro repetições. A "Sintético-IPEACS", desenvolvida no Estado do Rio de Janeiro, foi usada como testemunha nos experimentos de milho normal, e apresentou um potencial de produção bastante semelhante ao dos melhores híbridos introduzidos nessa região. 0 híbrido Ag 401 apresentou a maior produção de grãos, embora não estatisticamente diferente da apresentada pela testemunha. No grupo das cultivares de milho precoce, os híbridos Ag 7813, Ag 7071 e C 507 foram os mais promissores. Não foi constatada influência do ambiente local em nenhum dos grupos de cultivares. ABSTRACT - The performance of some com (Zea mays L.) cultivars was studied in two different localities of the northern region of Rio de Janeiro State, Brazil, during the growing season of 1978/1979. In each trial ten cultivars of normal and early com were tested using the experimental design of complete randomized blocks with four replications, "Sintético-IPEACS", developed in Rio de Janeiro State, was used as control in the experiments envolving the normal cultivars, and showed a potential production very similar to that of the best hybrids introduced in the regiori. Hybrid Ag 401, although not statisticallv different from the control showed the highest production of grains. Among the early cultivars, hybrids Ag 7813, Ag 7071 and C 507 were the most promising ones. No influence of environment on any of the groups of cultivars was found. MenosRESUMO - Foi estudado, no norte fluminense, em duas diferentes localidades, o desempenho de cultivares de milho (Zea mays L.) durante o ano agrícola 1978/1979. Em cada ensaio foram testadas dez cultivares de milho normal e precoce. 0 delineamento foi o de blocos ao acaso, com quatro repetições. A "Sintético-IPEACS", desenvolvida no Estado do Rio de Janeiro, foi usada como testemunha nos experimentos de milho normal, e apresentou um potencial de produção bastante semelhante ao dos melhores híbridos introduzidos nessa região. 0 híbrido Ag 401 apresentou a maior produção de grãos, embora não estatisticamente diferente da apresentada pela testemunha. No grupo das cultivares de milho precoce, os híbridos Ag 7813, Ag 7071 e C 507 foram os mais promissores. Não foi constatada influência do ambiente local em nenhum dos grupos de cultivares. ABSTRACT - The performance of some com (Zea mays L.) cultivars was studied in two different localities of the northern region of Rio de Janeiro State, Brazil, during the growing season of 1978/1979. In each trial ten cultivars of normal and early com were tested using the experimental design of complete randomized blocks with four replications, "Sintético-IPEACS", developed in Rio de Janeiro State, was used as control in the experiments envolving the normal cultivars, and showed a potential production very similar to that of the best hybrids introduced in the regiori. Hybrid Ag 401, although not statisticallv different from the control showed the... Mostrar Tudo |
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Thesagro: |
Milho Hibrido; Milho Precoce; Produtividade; Zea Mays. |
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Thesaurus NAL: |
Corn; Cultivars; Hybrids; Variety trials. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221283/1/Avaliacao-cultivares-milho-1982.pdf
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Marc: |
LEADER 02431naa a2200241 a 4500
001 1107663
005 2021-02-18
008 1982 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, L. A. A. de
245 $aAvaliação de cultivares de milho no norte fluminense.
260 $c1982
500 $aTítulo em inglês: Evaluation of corn cultivars in the state of Rio de Janeiro.
520 $aRESUMO - Foi estudado, no norte fluminense, em duas diferentes localidades, o desempenho de cultivares de milho (Zea mays L.) durante o ano agrícola 1978/1979. Em cada ensaio foram testadas dez cultivares de milho normal e precoce. 0 delineamento foi o de blocos ao acaso, com quatro repetições. A "Sintético-IPEACS", desenvolvida no Estado do Rio de Janeiro, foi usada como testemunha nos experimentos de milho normal, e apresentou um potencial de produção bastante semelhante ao dos melhores híbridos introduzidos nessa região. 0 híbrido Ag 401 apresentou a maior produção de grãos, embora não estatisticamente diferente da apresentada pela testemunha. No grupo das cultivares de milho precoce, os híbridos Ag 7813, Ag 7071 e C 507 foram os mais promissores. Não foi constatada influência do ambiente local em nenhum dos grupos de cultivares. ABSTRACT - The performance of some com (Zea mays L.) cultivars was studied in two different localities of the northern region of Rio de Janeiro State, Brazil, during the growing season of 1978/1979. In each trial ten cultivars of normal and early com were tested using the experimental design of complete randomized blocks with four replications, "Sintético-IPEACS", developed in Rio de Janeiro State, was used as control in the experiments envolving the normal cultivars, and showed a potential production very similar to that of the best hybrids introduced in the regiori. Hybrid Ag 401, although not statisticallv different from the control showed the highest production of grains. Among the early cultivars, hybrids Ag 7813, Ag 7071 and C 507 were the most promising ones. No influence of environment on any of the groups of cultivars was found.
650 $aCorn
650 $aCultivars
650 $aHybrids
650 $aVariety trials
650 $aMilho Hibrido
650 $aMilho Precoce
650 $aProdutividade
650 $aZea Mays
700 1 $aSOUZA FILHO, B. F. de
773 $tPesquisa Agropecuária Brasileira, Brasília$gv.17, n.11, p.1603-1606, nov. 1982.
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Embrapa Unidades Centrais (AI-SEDE) |
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