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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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Registro Completo
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
20/11/2020 |
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Data da última atualização: |
20/11/2020 |
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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: |
SOUZA, L. F. N.; OLIVEIRA, S. M.; ALMEIDA, R. E. M.; PIEROZAN JUNIOR, C.; BAPTISTELLA, J. L. C.; FAVARIN, J. L. |
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Afiliação: |
LUCAS FREITAS NOGUEIRA SOUZA, ESALQ; SILAS MACIEL DE OLIVEIRA, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; CLOVIS PIEROZAN JUNIOR, ESALQ; JOAO L. C. BAPTISTELLA, ESALQ; JOSE LAERCIO FAVARIN, ESALQ. |
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Título: |
Post-emergence nicosulfuron application enhanced leaf-stem ratio in maize-intercropped with Urochloa species after shading and sunlight re-exposure. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 14, n. 8, p. 1342-1347, 2020. |
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ISSN: |
1835-2707 |
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DOI: |
10.21475/ajcs.20.14.08.p2632 |
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Idioma: |
Inglês |
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Conteúdo: |
Low rates of nicosulfuron used in post-emergence provide an advantage to maize during the coexistence of the crops, when maize is intercropped with Urochloa grasses. Nonetheless, the effect of this practice on the morphology of these grasses is not known, neither how it affects forage growth after the coexistence period nor when the grass is re-exposed to full sunlight. The aim of this study was to determine biomass and leaf-stem ratio of Urochloa hybrid cv. Mulatto II (CIAT 36087), Urochloa brizantha (Hochst. ex A. Rich.) and Urochloa ruziziensis (Germ. & Evrard) after the development in a shade simulated environment promoted by maize in intercrop systems. The treatments consisted of three brachiaria species with two herbicides managements. Evaluations occurred at 0, 30 and 60 days after the sunlight re-exposure (DASR). Nicosulfuron application and Urochloa species did not affect biomass yield. However, herbicide increased leaf-stem ratio of the species between 25% at 0 DARS to 62% at 30 DARS on old tillers (tillers that grew under shade). The biomass yield, as well the leaf-stem ratio of the new tillers was not affected. Among the species, the greater ratio of leaves in the plant biomass was recorded for Urochloa brizantha (Hochst. ex A. Rich.) and Urochloa hybrid cv. Mulatto II (CIAT 36087). Nicosulfuron use in post-emergence enhanced the leaf-stem ratio of Urochloa grasses after sunlight re-exposure and a reliable alternative to improve forage quality in intercrop systems. MenosLow rates of nicosulfuron used in post-emergence provide an advantage to maize during the coexistence of the crops, when maize is intercropped with Urochloa grasses. Nonetheless, the effect of this practice on the morphology of these grasses is not known, neither how it affects forage growth after the coexistence period nor when the grass is re-exposed to full sunlight. The aim of this study was to determine biomass and leaf-stem ratio of Urochloa hybrid cv. Mulatto II (CIAT 36087), Urochloa brizantha (Hochst. ex A. Rich.) and Urochloa ruziziensis (Germ. & Evrard) after the development in a shade simulated environment promoted by maize in intercrop systems. The treatments consisted of three brachiaria species with two herbicides managements. Evaluations occurred at 0, 30 and 60 days after the sunlight re-exposure (DASR). Nicosulfuron application and Urochloa species did not affect biomass yield. However, herbicide increased leaf-stem ratio of the species between 25% at 0 DARS to 62% at 30 DARS on old tillers (tillers that grew under shade). The biomass yield, as well the leaf-stem ratio of the new tillers was not affected. Among the species, the greater ratio of leaves in the plant biomass was recorded for Urochloa brizantha (Hochst. ex A. Rich.) and Urochloa hybrid cv. Mulatto II (CIAT 36087). Nicosulfuron use in post-emergence enhanced the leaf-stem ratio of Urochloa grasses after sunlight re-exposure and a reliable alternative to improve forage quality in intercrop system... Mostrar Tudo |
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Thesagro: |
Capim Urochloa; Herbicida; Leguminosa Forrageira; Pastagem Consorciada. |
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Thesaurus NAL: |
Forage quality; Herbicides; Intercropping; Livestock; Nicosulfuron. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1126847/1/CNPASA-2020-ajcs.pdf
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Marc: |
LEADER 02488naa a2200313 a 4500
001 2126847
005 2020-11-20
008 2020 bl uuuu u00u1 u #d
022 $a1835-2707
024 7 $a10.21475/ajcs.20.14.08.p2632$2DOI
100 1 $aSOUZA, L. F. N.
245 $aPost-emergence nicosulfuron application enhanced leaf-stem ratio in maize-intercropped with Urochloa species after shading and sunlight re-exposure.$h[electronic resource]
260 $c2020
520 $aLow rates of nicosulfuron used in post-emergence provide an advantage to maize during the coexistence of the crops, when maize is intercropped with Urochloa grasses. Nonetheless, the effect of this practice on the morphology of these grasses is not known, neither how it affects forage growth after the coexistence period nor when the grass is re-exposed to full sunlight. The aim of this study was to determine biomass and leaf-stem ratio of Urochloa hybrid cv. Mulatto II (CIAT 36087), Urochloa brizantha (Hochst. ex A. Rich.) and Urochloa ruziziensis (Germ. & Evrard) after the development in a shade simulated environment promoted by maize in intercrop systems. The treatments consisted of three brachiaria species with two herbicides managements. Evaluations occurred at 0, 30 and 60 days after the sunlight re-exposure (DASR). Nicosulfuron application and Urochloa species did not affect biomass yield. However, herbicide increased leaf-stem ratio of the species between 25% at 0 DARS to 62% at 30 DARS on old tillers (tillers that grew under shade). The biomass yield, as well the leaf-stem ratio of the new tillers was not affected. Among the species, the greater ratio of leaves in the plant biomass was recorded for Urochloa brizantha (Hochst. ex A. Rich.) and Urochloa hybrid cv. Mulatto II (CIAT 36087). Nicosulfuron use in post-emergence enhanced the leaf-stem ratio of Urochloa grasses after sunlight re-exposure and a reliable alternative to improve forage quality in intercrop systems.
650 $aForage quality
650 $aHerbicides
650 $aIntercropping
650 $aLivestock
650 $aNicosulfuron
650 $aCapim Urochloa
650 $aHerbicida
650 $aLeguminosa Forrageira
650 $aPastagem Consorciada
700 1 $aOLIVEIRA, S. M.
700 1 $aALMEIDA, R. E. M.
700 1 $aPIEROZAN JUNIOR, C.
700 1 $aBAPTISTELLA, J. L. C.
700 1 $aFAVARIN, J. L.
773 $tAustralian Journal of Crop Science$gv. 14, n. 8, p. 1342-1347, 2020.
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Embrapa Pesca e Aquicultura (CNPASA) |
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