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 | Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
10/12/2012 |
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Data da última atualização: |
10/12/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ABREU, U. G. P. de; GOMES, E. G.; MELLO, J. C. C. B. S. de; SANTOS, S. A.; CATTO, D. F. |
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Afiliação: |
URBANO GOMES PINTO DE ABREU, CPAP; ELIANE GONCALVES GOMES, SGE; JOÃO CARLOS CORREIA BAPTISTA SOARES DE MELLO; SANDRA APARECIDA SANTOS, CPAP; DALTON FRANCISCO CATTO. |
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Título: |
Heifer retention program in the Pantanal: a study with data envelopment analysis (DEA) and malmquist index. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 41, n. 8, p. 1937-1943, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to propose Data Envelopment Analysis (DEA) models and non-parametric Malmquist indexes to evaluate the efficiency of 11 livestock farms in the Pantanal region. These farms took out a loan from ?Fundo Constitucional de Financiamento do Centro-Oeste? ? FCO (Constitutional Financial Fund for the Midwest), a line of credit for financing heifer retention. The beneficiaries were the farmers whose properties met the following conditions: farms located in the plain of Pantanal, with at least 50% of native pasture; farms that were part of managerial capacity building projects intended to ensure better management and animal performance indexes; and farms with pasture areas where the activity could potentially evolve. The management of the loan on 11 farms were studied in relation to the technology introduced in the period from 2004 to 2008. Five properties presented technical efficiency below 1, that is, the technical management efficiency with the objective to increase the cattle through heifer retention and the purchase of higher genetic quality heifers was not achieved. However, the index of technological progress was above 1 on all tested farms, which means that technology was in fact incorporated in all properties, which resulted in total factor productivity growth on all farms. The main objective was fully met, even on the technically inefficient farms. |
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Thesagro: |
Analise estatistica; Novilho. |
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Thesaurus Nal: |
Cattle; Mathematical models; Production technology. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02113naa a2200229 a 4500
001 1941892
005 2012-12-10
008 2012 bl uuuu u00u1 u #d
100 1 $aABREU, U. G. P. de
245 $aHeifer retention program in the Pantanal$ba study with data envelopment analysis (DEA) and malmquist index.$h[electronic resource]
260 $c2012
520 $aThe objective of this study was to propose Data Envelopment Analysis (DEA) models and non-parametric Malmquist indexes to evaluate the efficiency of 11 livestock farms in the Pantanal region. These farms took out a loan from ?Fundo Constitucional de Financiamento do Centro-Oeste? ? FCO (Constitutional Financial Fund for the Midwest), a line of credit for financing heifer retention. The beneficiaries were the farmers whose properties met the following conditions: farms located in the plain of Pantanal, with at least 50% of native pasture; farms that were part of managerial capacity building projects intended to ensure better management and animal performance indexes; and farms with pasture areas where the activity could potentially evolve. The management of the loan on 11 farms were studied in relation to the technology introduced in the period from 2004 to 2008. Five properties presented technical efficiency below 1, that is, the technical management efficiency with the objective to increase the cattle through heifer retention and the purchase of higher genetic quality heifers was not achieved. However, the index of technological progress was above 1 on all tested farms, which means that technology was in fact incorporated in all properties, which resulted in total factor productivity growth on all farms. The main objective was fully met, even on the technically inefficient farms.
650 $aCattle
650 $aMathematical models
650 $aProduction technology
650 $aAnalise estatistica
650 $aNovilho
700 1 $aGOMES, E. G.
700 1 $aMELLO, J. C. C. B. S. de
700 1 $aSANTOS, S. A.
700 1 $aCATTO, D. F.
773 $tRevista Brasileira de Zootecnia$gv. 41, n. 8, p. 1937-1943, 2012.
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Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
30/12/2015 |
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Data da última atualização: |
10/10/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
NASCIMENTO, C. F. M. do; BERNDT, A.; ROMERO, L. A.; MEYER, P. M.; FRIGHETTO, R. T. S.; DEMARCHI, J. J. A. de A.; RODRIGUES, P. H. M. |
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Afiliação: |
CAROLINA FERNANDA MOYSES DO NASCIMENTO, FMVZ-USP; ALEXANDRE BERNDT, CPPSE; LAURA ALEXANDRA ROMERO, FMVZ-USP; PAULA MARQUES MEYER, IBGE; ROSA TOYOKO SHIRAISHI FRIGHETTO, CNPMA; JOÃO JOSÉ ASSUMPÇÃO DE ABREU DEMARCHI, IZ Nova Odessa; PAULO HENRIQUE MAZZA RODRIGUES, FMVZ-USP. |
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Título: |
Methane emission of cattle fed Urochloa brizantha hay harvested at different stages. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Agricultural Science, Toronto, v. 8, n. 1 p. 163-174, 2016. |
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ISSN: |
1916-9760 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective of this trial was to assess the methane emission rate, as well as the digestibility and ruminal fermentation parameters in animals fed Urochloa brizantha hay harvested at different stages of growth. Six Nellore rumen-cannulated steers (402.0 ± 51.62 kg) were assigned to a replicated 3×3 Latin square (18 experimental units). Treatments differed according to three growth stages of the forage: 15 - hay with 15 days of growth, 45 - hay with 45 days of growth and 90 - hay with 90 days of growth. Each experimental period lasted 21 days. From the 8th day, feces were sampled during 5 days to determine apparent total digestibility of dry matter and its fractions. Beginning on the 13th day and running for 7 days, methane production was evaluated using the sulfur hexafluoride (SF6) tracer technique. On the 20th day, ruminal fluid was sampled prior to and after 2, 4, 6, 8 and 10 hours post-morning feeding for evaluating pH, ammonia-N and short-chain fatty acids (SCFA). As the stage of forage growth for harvesting advanced in days, the digestibility coefficient of crude protein decreased and non-fibrous carbohydrate values increased. Methane production was affected not only by the stage of forage growth, but also by quality of its conservation after harvesting. There were significant differences among treatments when methane was expressed in g kg-1 DMI, g kg-1 OMI, % GE and % DE, with non-linear effect. The stage of forage growth did not influence ruminal pH, total concentration or molar proportion of SCFA, but decreased NH3-N concentration. MenosAbstract: The objective of this trial was to assess the methane emission rate, as well as the digestibility and ruminal fermentation parameters in animals fed Urochloa brizantha hay harvested at different stages of growth. Six Nellore rumen-cannulated steers (402.0 ± 51.62 kg) were assigned to a replicated 3×3 Latin square (18 experimental units). Treatments differed according to three growth stages of the forage: 15 - hay with 15 days of growth, 45 - hay with 45 days of growth and 90 - hay with 90 days of growth. Each experimental period lasted 21 days. From the 8th day, feces were sampled during 5 days to determine apparent total digestibility of dry matter and its fractions. Beginning on the 13th day and running for 7 days, methane production was evaluated using the sulfur hexafluoride (SF6) tracer technique. On the 20th day, ruminal fluid was sampled prior to and after 2, 4, 6, 8 and 10 hours post-morning feeding for evaluating pH, ammonia-N and short-chain fatty acids (SCFA). As the stage of forage growth for harvesting advanced in days, the digestibility coefficient of crude protein decreased and non-fibrous carbohydrate values increased. Methane production was affected not only by the stage of forage growth, but also by quality of its conservation after harvesting. There were significant differences among treatments when methane was expressed in g kg-1 DMI, g kg-1 OMI, % GE and % DE, with non-linear effect. The stage of forage growth did not influence ruminal pH, tota... Mostrar Tudo |
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Palavras-Chave: |
Enteric methane; Metabolic cage; Short-chain fatty acids; Tracer technique. |
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Thesagro: |
Feno; Fermentação; Gado de corte; Metano; Nutrição animal; Ruminação. |
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Thesaurus NAL: |
Beef cattle; Methane; sulfur hexafluoride; Tracer techniques. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02640naa a2200373 a 4500
001 2032687
005 2016-10-10
008 2016 bl --- 0-- u #d
022 $a1916-9760
100 1 $aNASCIMENTO, C. F. M. do
245 $aMethane emission of cattle fed Urochloa brizantha hay harvested at different stages.$h[electronic resource]
260 $c2016
520 $aAbstract: The objective of this trial was to assess the methane emission rate, as well as the digestibility and ruminal fermentation parameters in animals fed Urochloa brizantha hay harvested at different stages of growth. Six Nellore rumen-cannulated steers (402.0 ± 51.62 kg) were assigned to a replicated 3×3 Latin square (18 experimental units). Treatments differed according to three growth stages of the forage: 15 - hay with 15 days of growth, 45 - hay with 45 days of growth and 90 - hay with 90 days of growth. Each experimental period lasted 21 days. From the 8th day, feces were sampled during 5 days to determine apparent total digestibility of dry matter and its fractions. Beginning on the 13th day and running for 7 days, methane production was evaluated using the sulfur hexafluoride (SF6) tracer technique. On the 20th day, ruminal fluid was sampled prior to and after 2, 4, 6, 8 and 10 hours post-morning feeding for evaluating pH, ammonia-N and short-chain fatty acids (SCFA). As the stage of forage growth for harvesting advanced in days, the digestibility coefficient of crude protein decreased and non-fibrous carbohydrate values increased. Methane production was affected not only by the stage of forage growth, but also by quality of its conservation after harvesting. There were significant differences among treatments when methane was expressed in g kg-1 DMI, g kg-1 OMI, % GE and % DE, with non-linear effect. The stage of forage growth did not influence ruminal pH, total concentration or molar proportion of SCFA, but decreased NH3-N concentration.
650 $aBeef cattle
650 $aMethane
650 $asulfur hexafluoride
650 $aTracer techniques
650 $aFeno
650 $aFermentação
650 $aGado de corte
650 $aMetano
650 $aNutrição animal
650 $aRuminação
653 $aEnteric methane
653 $aMetabolic cage
653 $aShort-chain fatty acids
653 $aTracer technique
700 1 $aBERNDT, A.
700 1 $aROMERO, L. A.
700 1 $aMEYER, P. M.
700 1 $aFRIGHETTO, R. T. S.
700 1 $aDEMARCHI, J. J. A. de A.
700 1 $aRODRIGUES, P. H. M.
773 $tJournal of Agricultural Science, Toronto$gv. 8, n. 1 p. 163-174, 2016.
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