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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão; Embrapa Unidades Centrais. |
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Data corrente: |
23/08/1993 |
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Data da última atualização: |
08/04/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AZEVEDO, D. M. P. de; BELTRÃO, N. E. de M.; NOBREGA, L. B. da; CRISOSTOMO, J. R. |
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Título: |
Época da poda em cultivares de algodoeiro herbáceo. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v.18, n.4, p. 387-391, abr. 1983. |
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Idioma: |
Português |
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Conteúdo: |
RESUMO - Um estudo de campo foi conduzido nos anos de 1979 e 1980, no vale do rio Piranhas, no Sertão do Estado da Paraíba, visando investigar o desempenho de sete cultivares de algodoeiro herbáceo (Gossypium hirsutum var. latifolium L.), quando submetidas a duas épocas de poda. Os resultados mostraram que: 1) a poda deve ser feita antes do período chuvoso; 2) as cultivares mais produtivas, em termo de rendimento total nos dois anos de cultivo, foram as mesmas que apresentaram melhor desempenho quando podadas ("Allen 333/57", "SU 0450/8909", "CNPA 78/5B" e "Reba B-50"); e 3) das características tecnológicas e agronômicas de fibra, peso de 100 sementes foi a única viariável a ser afetada pelo fator época de poda. ABSTRACT - A variety trial of seven upland cotton cultivars (G. hirsutum L.) was conducted during 1979 and 1980 in the Rio Piranhas valey, in the State of Paraíba, Brazil, to study their performance under two different pruning dates. The results showed that: 19) pruning must be done before the rainy season; 29) the highest yielding cultivars, in terms of total yield for the two years combined, were the same cultivars that, when pruned, showed better perfomance ('AlIen 333157', 'SU 0450/8909', 'CNPA 7815B' e 'Reba 8-501; and 39) in relation to technological and agronomic fiber characteristics, only the character 100-seeds weight was affected by the date of pruning factor. |
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Palavras-Chave: |
Caracteristica; Fiber; Paraiba; Periodo chuvoso; Rainy Season; Sao Bento; Technological characteristics; Tecnologicas. |
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Thesagro: |
Algodão Herbáceo; Características Agronômicas; Fibra; Gossypium Hirsutum; Poda; Variedade. |
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Thesaurus Nal: |
Cotton; Cultivars; Gossypium; Pruning. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222416/1/Epoca-poda-cultivares-1983.pdf
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Marc: |
LEADER 02405naa a2200373 a 4500
001 1262712
005 2021-04-08
008 1983 bl uuuu u00u1 u #d
100 1 $aAZEVEDO, D. M. P. de
245 $aÉpoca da poda em cultivares de algodoeiro herbáceo.
260 $c1983
520 $aRESUMO - Um estudo de campo foi conduzido nos anos de 1979 e 1980, no vale do rio Piranhas, no Sertão do Estado da Paraíba, visando investigar o desempenho de sete cultivares de algodoeiro herbáceo (Gossypium hirsutum var. latifolium L.), quando submetidas a duas épocas de poda. Os resultados mostraram que: 1) a poda deve ser feita antes do período chuvoso; 2) as cultivares mais produtivas, em termo de rendimento total nos dois anos de cultivo, foram as mesmas que apresentaram melhor desempenho quando podadas ("Allen 333/57", "SU 0450/8909", "CNPA 78/5B" e "Reba B-50"); e 3) das características tecnológicas e agronômicas de fibra, peso de 100 sementes foi a única viariável a ser afetada pelo fator época de poda. ABSTRACT - A variety trial of seven upland cotton cultivars (G. hirsutum L.) was conducted during 1979 and 1980 in the Rio Piranhas valey, in the State of Paraíba, Brazil, to study their performance under two different pruning dates. The results showed that: 19) pruning must be done before the rainy season; 29) the highest yielding cultivars, in terms of total yield for the two years combined, were the same cultivars that, when pruned, showed better perfomance ('AlIen 333157', 'SU 0450/8909', 'CNPA 7815B' e 'Reba 8-501; and 39) in relation to technological and agronomic fiber characteristics, only the character 100-seeds weight was affected by the date of pruning factor.
650 $aCotton
650 $aCultivars
650 $aGossypium
650 $aPruning
650 $aAlgodão Herbáceo
650 $aCaracterísticas Agronômicas
650 $aFibra
650 $aGossypium Hirsutum
650 $aPoda
650 $aVariedade
653 $aCaracteristica
653 $aFiber
653 $aParaiba
653 $aPeriodo chuvoso
653 $aRainy Season
653 $aSao Bento
653 $aTechnological characteristics
653 $aTecnologicas
700 1 $aBELTRÃO, N. E. de M.
700 1 $aNOBREGA, L. B. da
700 1 $aCRISOSTOMO, J. R.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv.18, n.4, p. 387-391, abr. 1983.
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Registro original: |
Embrapa Algodão (CNPA) |
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Origem |
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Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente; Embrapa Pecuária Sudeste. |
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Data corrente: |
03/01/2022 |
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Data da última atualização: |
11/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SAKAMOTO, L. S.; SOUZA, L. L.; GIANVECCHIO, S. B.; OLIVEIRA, M. H. V. DE; SILVA, J. A. II DE V.; CANESIN, R. C.; BRANCO, R. H.; BACCAN, M.; BERNDT, A.; ALBUQUERQUE, L. G. DE; MERCADANTE, M. E. Z. |
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Afiliação: |
LEANDRO SANNOMIYA SAKAMOTO, Beef Cattle Research Center; LUANA LELIS SOUZA, Beef Cattle Research Center; SARAH BERNARDES GIANVECCHIO, Beef Cattle Research Center; MATHEUS HENRIQUE VARGAS DE OLIVEIRA, UNESP; JOSINEUDSON AUGUSTO II DE VASCONCELOS SILVA, UNESP; ROBERTA CARRILHO CANESIN, Beef Cattle Research Center; RENATA HELENA BRANCO, Beef Cattle Research Center; MELISSA BACCAN, CNPMA; ALEXANDRE BERNDT, CPPSE; LUCIA GALVÃO DE ALBUQUERQUE, UNESP; MARIA EUGÊNIA ZERLOTTI MERCADANTE, Beef Cattle Research Center. |
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Título: |
Phenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Plos One, v. 16, n. 10, e0257964, 2021. |
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Páginas: |
14 p. |
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ISSN: |
1932-6203 |
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DOI: |
https://doi.org/10.1371/journal. pone.0257964 |
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Idioma: |
Inglês |
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Conteúdo: |
Enteric methane (CH4) emissions are a natural process in ruminants and can result in up to 12% of energy losses. Hence, decreasing enteric CH4 production constitutes an important step towards improving the feed efficiency of Brazilian cattle herds. The aim of this study was to evaluate the relationship between performance, residual feed intake (RFI), and enteric CH4 emission in growing Nellore cattle (Bos indicus). Performance, RFI and CH4 emission data were obtained from 489 animals participating in selection programs (mid-test age and body weight: 414±159 days and 356±135 kg, respectively) that were evaluated in 12 performance tests carried out in individual pens (n = 95) or collective paddocks (n = 394) equipped with electronic feed bunks. The sulfur hexafluoride tracer gas technique was used to measure daily CH4 emissions. The following variables were estimated: CH4 emission rate (g/day), residual methane emission and emission expressed per mid-test body weight, metabolic body weight, dry matter intake (CH4/DMI), average daily gain, and ingested gross energy (CH4/GE). Animals classified as negative RFI (RFI<0), i.e., more efficient animals, consumed less dry matter (P <0.0001) and emitted less g CH4/day (P = 0.0022) than positive RFI animals (RFI>0). Nonetheless, more efficient animals emitted more CH4/DMI and CH4/GE (P < 0.0001), suggesting that the difference in daily intake between animals is a determinant factor for the difference in daily enteric CH4 emissions. In addition, animals classified as negative RFI emitted less CH4 per kg mid-test weight and metabolic weight (P = 0.0096 and P = 0.0033, respectively), i.e., most efficient animals could emit less CH4 per kg of carcass. In conclusion, more efficient animals produced less methane when expressed as g/day and per kg mid-test weight than less efficient animals, suggesting lower emissions per kg of carcass produced. However, it is not possible to state that feed efficiency has a direct effect on enteric CH4 emissions since emissions per kg of consumed dry matter and the percentage of gross energy lost as CH4 are higher for more efficient animals. MenosEnteric methane (CH4) emissions are a natural process in ruminants and can result in up to 12% of energy losses. Hence, decreasing enteric CH4 production constitutes an important step towards improving the feed efficiency of Brazilian cattle herds. The aim of this study was to evaluate the relationship between performance, residual feed intake (RFI), and enteric CH4 emission in growing Nellore cattle (Bos indicus). Performance, RFI and CH4 emission data were obtained from 489 animals participating in selection programs (mid-test age and body weight: 414±159 days and 356±135 kg, respectively) that were evaluated in 12 performance tests carried out in individual pens (n = 95) or collective paddocks (n = 394) equipped with electronic feed bunks. The sulfur hexafluoride tracer gas technique was used to measure daily CH4 emissions. The following variables were estimated: CH4 emission rate (g/day), residual methane emission and emission expressed per mid-test body weight, metabolic body weight, dry matter intake (CH4/DMI), average daily gain, and ingested gross energy (CH4/GE). Animals classified as negative RFI (RFI<0), i.e., more efficient animals, consumed less dry matter (P <0.0001) and emitted less g CH4/day (P = 0.0022) than positive RFI animals (RFI>0). Nonetheless, more efficient animals emitted more CH4/DMI and CH4/GE (P < 0.0001), suggesting that the difference in daily intake between animals is a determinant factor for the difference in daily enteric CH4 emissions. In a... Mostrar Tudo |
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Palavras-Chave: |
Energy losses; Enteric methane; Residual feed intake; Sulfur hexafluoride tracer gas technique. |
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Thesaurus NAL: |
Dry matter intake. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/232385/1/Baccan-Phenotypic-association-2021.pdf
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Marc: |
LEADER 03181naa a2200337 a 4500
001 2138676
005 2022-03-11
008 2021 bl uuuu u00u1 u #d
022 $a1932-6203
024 7 $ahttps://doi.org/10.1371/journal. pone.0257964$2DOI
100 1 $aSAKAMOTO, L. S.
245 $aPhenotypic association among performance, feed efficiency and methane emission traits in Nellore cattle.$h[electronic resource]
260 $c2021
300 $a14 p.
520 $aEnteric methane (CH4) emissions are a natural process in ruminants and can result in up to 12% of energy losses. Hence, decreasing enteric CH4 production constitutes an important step towards improving the feed efficiency of Brazilian cattle herds. The aim of this study was to evaluate the relationship between performance, residual feed intake (RFI), and enteric CH4 emission in growing Nellore cattle (Bos indicus). Performance, RFI and CH4 emission data were obtained from 489 animals participating in selection programs (mid-test age and body weight: 414±159 days and 356±135 kg, respectively) that were evaluated in 12 performance tests carried out in individual pens (n = 95) or collective paddocks (n = 394) equipped with electronic feed bunks. The sulfur hexafluoride tracer gas technique was used to measure daily CH4 emissions. The following variables were estimated: CH4 emission rate (g/day), residual methane emission and emission expressed per mid-test body weight, metabolic body weight, dry matter intake (CH4/DMI), average daily gain, and ingested gross energy (CH4/GE). Animals classified as negative RFI (RFI<0), i.e., more efficient animals, consumed less dry matter (P <0.0001) and emitted less g CH4/day (P = 0.0022) than positive RFI animals (RFI>0). Nonetheless, more efficient animals emitted more CH4/DMI and CH4/GE (P < 0.0001), suggesting that the difference in daily intake between animals is a determinant factor for the difference in daily enteric CH4 emissions. In addition, animals classified as negative RFI emitted less CH4 per kg mid-test weight and metabolic weight (P = 0.0096 and P = 0.0033, respectively), i.e., most efficient animals could emit less CH4 per kg of carcass. In conclusion, more efficient animals produced less methane when expressed as g/day and per kg mid-test weight than less efficient animals, suggesting lower emissions per kg of carcass produced. However, it is not possible to state that feed efficiency has a direct effect on enteric CH4 emissions since emissions per kg of consumed dry matter and the percentage of gross energy lost as CH4 are higher for more efficient animals.
650 $aDry matter intake
653 $aEnergy losses
653 $aEnteric methane
653 $aResidual feed intake
653 $aSulfur hexafluoride tracer gas technique
700 1 $aSOUZA, L. L.
700 1 $aGIANVECCHIO, S. B.
700 1 $aOLIVEIRA, M. H. V. DE
700 1 $aSILVA, J. A. II DE V.
700 1 $aCANESIN, R. C.
700 1 $aBRANCO, R. H.
700 1 $aBACCAN, M.
700 1 $aBERNDT, A.
700 1 $aALBUQUERQUE, L. G. DE
700 1 $aMERCADANTE, M. E. Z.
773 $tPlos One$gv. 16, n. 10, e0257964, 2021.
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Embrapa Meio Ambiente (CNPMA) |
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