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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/09/2017 |
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Data da última atualização: |
20/09/2017 |
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Autoria: |
MEYER, J. H.; WEIR, W. C.; JONES, L. G.; HULL, J. L. |
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Título: |
Effect of stage of maturity, dehydrating versus field-curing and pelleting on alfalfa hay quality as measured by lamb gains. |
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Ano de publicação: |
1960 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 19, n. 1, p. 283-294, Feb. 1960. |
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DOI: |
10.2527/jas1960.191283x |
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Idioma: |
Inglês |
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Conteúdo: |
Results are reported of a four-year study on the influence of stage of maturity on the value of alfalfa as an energy source for sheep. Factorial designs were used for study of interactions of harvesting method (dehydrated and sun-cured) and/or method of feeding (pelleted or chopped hay). Another aspect was the relating of chemical and physical characteristics to hay quality. Weight gains and feed consumption of individually fed growing lambs were used to assess feeding value, which is primarily a reflection of energy value for ruminants since protein was not a limiting factor in alfalfa. From a consideration of the changes in lignin content and the gains of the lambs fed hay harvested at different stages of maturity, the critical turning point in feeding value appears to be when 10% of the stems have one or more blossoms. After 10% bloom the feeding value did not change as markedly as between earlier maturity stages. Differences between bud and bloom stages were always found when alfalfa was dehydrated. Field-cured alfalfa did not always show this difference, because sometimes a relatively greater increase in lignin occurred as a result of harvesting loss for the bud-stage alfalfa compared to the bloom-stage alfalfa. No change in quality was observed between 30 and 100% bloom. Dehydrated alfalfa was superior to field-cured alfalfa as an energy source in all cases. Pelleted alfalfa in all trials gave greater daily gains than chopped. The respective correlations of lignin and protein content with adjusted daily gain (equal feed consumption) were ?.94 and 0.85. Height of stand was very closely correlated with lignin and protein content before harvest, irrespective of year, cutting, or stage of maturity. This suggests that height of stand could be used as an indication of alfalfa quality when selecting a harvest date in this area. MenosResults are reported of a four-year study on the influence of stage of maturity on the value of alfalfa as an energy source for sheep. Factorial designs were used for study of interactions of harvesting method (dehydrated and sun-cured) and/or method of feeding (pelleted or chopped hay). Another aspect was the relating of chemical and physical characteristics to hay quality. Weight gains and feed consumption of individually fed growing lambs were used to assess feeding value, which is primarily a reflection of energy value for ruminants since protein was not a limiting factor in alfalfa. From a consideration of the changes in lignin content and the gains of the lambs fed hay harvested at different stages of maturity, the critical turning point in feeding value appears to be when 10% of the stems have one or more blossoms. After 10% bloom the feeding value did not change as markedly as between earlier maturity stages. Differences between bud and bloom stages were always found when alfalfa was dehydrated. Field-cured alfalfa did not always show this difference, because sometimes a relatively greater increase in lignin occurred as a result of harvesting loss for the bud-stage alfalfa compared to the bloom-stage alfalfa. No change in quality was observed between 30 and 100% bloom. Dehydrated alfalfa was superior to field-cured alfalfa as an energy source in all cases. Pelleted alfalfa in all trials gave greater daily gains than chopped. The respective correlations of lignin and ... Mostrar Tudo |
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Palavras-Chave: |
Feed consumption; Lignins. |
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Thesagro: |
Medicago Sativa. |
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Thesaurus Nal: |
Animal feeding; Animal nutrition; Hay; Lambs; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02614naa a2200265 a 4500
001 2075967
005 2017-09-20
008 1960 bl uuuu u00u1 u #d
024 7 $a10.2527/jas1960.191283x$2DOI
100 1 $aMEYER, J. H.
245 $aEffect of stage of maturity, dehydrating versus field-curing and pelleting on alfalfa hay quality as measured by lamb gains.
260 $c1960
520 $aResults are reported of a four-year study on the influence of stage of maturity on the value of alfalfa as an energy source for sheep. Factorial designs were used for study of interactions of harvesting method (dehydrated and sun-cured) and/or method of feeding (pelleted or chopped hay). Another aspect was the relating of chemical and physical characteristics to hay quality. Weight gains and feed consumption of individually fed growing lambs were used to assess feeding value, which is primarily a reflection of energy value for ruminants since protein was not a limiting factor in alfalfa. From a consideration of the changes in lignin content and the gains of the lambs fed hay harvested at different stages of maturity, the critical turning point in feeding value appears to be when 10% of the stems have one or more blossoms. After 10% bloom the feeding value did not change as markedly as between earlier maturity stages. Differences between bud and bloom stages were always found when alfalfa was dehydrated. Field-cured alfalfa did not always show this difference, because sometimes a relatively greater increase in lignin occurred as a result of harvesting loss for the bud-stage alfalfa compared to the bloom-stage alfalfa. No change in quality was observed between 30 and 100% bloom. Dehydrated alfalfa was superior to field-cured alfalfa as an energy source in all cases. Pelleted alfalfa in all trials gave greater daily gains than chopped. The respective correlations of lignin and protein content with adjusted daily gain (equal feed consumption) were ?.94 and 0.85. Height of stand was very closely correlated with lignin and protein content before harvest, irrespective of year, cutting, or stage of maturity. This suggests that height of stand could be used as an indication of alfalfa quality when selecting a harvest date in this area.
650 $aAnimal feeding
650 $aAnimal nutrition
650 $aHay
650 $aLambs
650 $aSheep
650 $aMedicago Sativa
653 $aFeed consumption
653 $aLignins
700 1 $aWEIR, W. C.
700 1 $aJONES, L. G.
700 1 $aHULL, J. L.
773 $tJournal of Animal Science$gv. 19, n. 1, p. 283-294, Feb. 1960.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Pecuária Sudeste. |
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Data corrente: |
08/06/2017 |
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Data da última atualização: |
21/11/2017 |
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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: |
BELONI, T.; PEZZOPANE, C. de G.; ROVADOSCKI, G. A.; FAVERO, A. P.; DIAS FILHO, M. B.; SANTOS, P. M. |
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Afiliação: |
Tatiane Beloni, USP; Cristiana de Gaspari Pezzopane, Bolsista/Embrapa Pecuária Sudeste; Gregori Alberto Rovadoscki, USP; ALESSANDRA PEREIRA FAVERO, CPPSE; MOACYR BERNARDINO DIAS FILHO, CPATU; PATRICIA MENEZES SANTOS, CPPSE. |
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Título: |
Morphological and physiological responses and the recovery ability of Paspalum accessions to water deficit and waterlogging. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Grass and Forage Science, v. 72, n. 4, p. 840-850, 2017. |
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DOI: |
10.1111/gfs.12281 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Limited knowledge about the agronomic potential of Paspalum species from the Americas hinders their use in pastures. The response mechanisms to water deficit and waterlogging were studied in five accessions of Paspalum sp. (P. regnellii cv. BRS Guará and BGP 397, P. conspersum BGP 402 and P. malacophyllum BGP 289 and BGP 293) and Urochloa brizantha cv. Marandu. Morphological and physiological traits at the end of the stress and after the recovery period were measured. All Paspalum accessions, especially BGP 289, BGP 402 and BGP 397, and also cv. Marandu, showed survival mechanisms to water deficit. BRS Guará showed adaptive features to waterlogging, although had with a low survival rate to water deficit. Under waterlogging, BGP 289 and cv. Marandu showed reduced growth, and after the recovery period, they presented low plant survival and root recovery. Although growth of BGP 293 was reduced during waterlogging, it presented high tiller survival rate. BGP 293, BGP 402 and BGP 397 showed adaptive potential strategies for waterlogging and water deficit. There is genetic variability among the evaluated accessions for water deficit and waterlogging stresses, suggesting that they may be used per se or as progenitors in crosses with other genotypes in breeding programmes. |
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Palavras-Chave: |
Déficit hídrico; Tiller survival. |
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Thesagro: |
Brachiaria Brizantha; Pastagem. |
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Thesaurus NAL: |
abiotic stress; Paspalum; water stress. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02127naa a2200277 a 4500
001 2070609
005 2017-11-21
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1111/gfs.12281$2DOI
100 1 $aBELONI, T.
245 $aMorphological and physiological responses and the recovery ability of Paspalum accessions to water deficit and waterlogging.$h[electronic resource]
260 $c2017
520 $aLimited knowledge about the agronomic potential of Paspalum species from the Americas hinders their use in pastures. The response mechanisms to water deficit and waterlogging were studied in five accessions of Paspalum sp. (P. regnellii cv. BRS Guará and BGP 397, P. conspersum BGP 402 and P. malacophyllum BGP 289 and BGP 293) and Urochloa brizantha cv. Marandu. Morphological and physiological traits at the end of the stress and after the recovery period were measured. All Paspalum accessions, especially BGP 289, BGP 402 and BGP 397, and also cv. Marandu, showed survival mechanisms to water deficit. BRS Guará showed adaptive features to waterlogging, although had with a low survival rate to water deficit. Under waterlogging, BGP 289 and cv. Marandu showed reduced growth, and after the recovery period, they presented low plant survival and root recovery. Although growth of BGP 293 was reduced during waterlogging, it presented high tiller survival rate. BGP 293, BGP 402 and BGP 397 showed adaptive potential strategies for waterlogging and water deficit. There is genetic variability among the evaluated accessions for water deficit and waterlogging stresses, suggesting that they may be used per se or as progenitors in crosses with other genotypes in breeding programmes.
650 $aabiotic stress
650 $aPaspalum
650 $awater stress
650 $aBrachiaria Brizantha
650 $aPastagem
653 $aDéficit hídrico
653 $aTiller survival
700 1 $aPEZZOPANE, C. de G.
700 1 $aROVADOSCKI, G. A.
700 1 $aFAVERO, A. P.
700 1 $aDIAS FILHO, M. B.
700 1 $aSANTOS, P. M.
773 $tGrass and Forage Science$gv. 72, n. 4, p. 840-850, 2017.
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Embrapa Pecuária Sudeste (CPPSE) |
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