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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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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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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/09/2015 |
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Data da última atualização: |
22/03/2016 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ANTOLIN, L. A. S.; COSTA NETO, G. M. F.; BORGES, M. G.; HEINEMANN, A. B. |
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Afiliação: |
LUIS ALBERTO S. ANTOLIN, graduando UFG; GERMANO MARTINS F. COSTA NETO, mestrando UFG; M. G. BORGES; ALEXANDRE BRYAN HEINEMANN, CNPAF. |
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Título: |
Mapping the potential yield of upland rice in Rondonia State. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: INOVAGRI INTERNATIONAL MEETING, 3., 2015, Fortaleza. Anais... Fortaleza: INI, 2015. |
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DOI: |
http://dx.doi.org/10.12702/iii.inovagri.2015-a112 |
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Idioma: |
Inglês |
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Conteúdo: |
The rice farming has a high socioeconomical importance for Brazilian population, and represents since the 1970?s, it is the main crop for agricultural borders opening. Aiming characterize the potential yield and to define the regions most favorable for growth upland rice, it was simulated the potential grain yield (PGY), potential evapotranspiration (ETP) and maximum transpiration (TRC) by anoriented process crop model. The simulations were based on cultivar BRSPrimavera, considering eight planting dates (Nov 1st, 10th, 20th, Dec 1st, 10th, 20th, 30th and Jan 9th), for 33 years of data weather (1980-2013), in seven locations at Rondônia state: Ariquemes, Cacoal, Guajara-Mirim, Ji-Paraná, Machadinho do Oeste, Porto Velho and Vilhena. The upland rice crop cycle ranged from 95 days from emergence (DAE) in Ariquemes to 99 DAE in Machadinho do Oeste. The PGY, ETP and TRC data set were spatialized for the region. Rondônia showed an average and standard deviation potential yield of 4393 and 477 kg ha-1. The average ETP was 584,8 mm/cycle, with variance of 1259.9 mm/cycle. Maximum and minimum values of ETP was found for Guajara-Mirim and Vilhena, planting dates of Nov 1st and Jan 9th, respectively. The spatialization of results demonstrated a trend of PGY reduction as the sowing date is delayed. The highest potential yield were found at Vilhena (4952.7 kg/ha) and Ariquemes (4461.4 kg/ha). |
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Palavras-Chave: |
Rondonia. |
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Thesagro: |
Arroz; Evapotranspiração; Oryza sativa; Produtividade. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/129923/1/Inovagri.pdf
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Marc: |
LEADER 02073nam a2200217 a 4500
001 2024348
005 2016-03-22
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.12702/iii.inovagri.2015-a112$2DOI
100 1 $aANTOLIN, L. A. S.
245 $aMapping the potential yield of upland rice in Rondonia State.
260 $aIn: INOVAGRI INTERNATIONAL MEETING, 3., 2015, Fortaleza. Anais... Fortaleza: INI$c2015
520 $aThe rice farming has a high socioeconomical importance for Brazilian population, and represents since the 1970?s, it is the main crop for agricultural borders opening. Aiming characterize the potential yield and to define the regions most favorable for growth upland rice, it was simulated the potential grain yield (PGY), potential evapotranspiration (ETP) and maximum transpiration (TRC) by anoriented process crop model. The simulations were based on cultivar BRSPrimavera, considering eight planting dates (Nov 1st, 10th, 20th, Dec 1st, 10th, 20th, 30th and Jan 9th), for 33 years of data weather (1980-2013), in seven locations at Rondônia state: Ariquemes, Cacoal, Guajara-Mirim, Ji-Paraná, Machadinho do Oeste, Porto Velho and Vilhena. The upland rice crop cycle ranged from 95 days from emergence (DAE) in Ariquemes to 99 DAE in Machadinho do Oeste. The PGY, ETP and TRC data set were spatialized for the region. Rondônia showed an average and standard deviation potential yield of 4393 and 477 kg ha-1. The average ETP was 584,8 mm/cycle, with variance of 1259.9 mm/cycle. Maximum and minimum values of ETP was found for Guajara-Mirim and Vilhena, planting dates of Nov 1st and Jan 9th, respectively. The spatialization of results demonstrated a trend of PGY reduction as the sowing date is delayed. The highest potential yield were found at Vilhena (4952.7 kg/ha) and Ariquemes (4461.4 kg/ha).
650 $aArroz
650 $aEvapotranspiração
650 $aOryza sativa
650 $aProdutividade
653 $aRondonia
700 1 $aCOSTA NETO, G. M. F.
700 1 $aBORGES, M. G.
700 1 $aHEINEMANN, A. B.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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