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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
22/05/2023 |
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Autoria: |
ROSS, D. J.; MOLLOY, L. F.; COLLIE, T. W.; BALL, R. |
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Título: |
Influence of fertiliser nitrogen on nitrogen fractions and nonstructural carbohydrates in grazed grass-clover herbage. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
New Zealand Journal of Agricultural Research, v. 21, n. 2, p. 231-239, 1978. |
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DOI: |
https://doi.org/10.1080/00288233.1978.10427404 |
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Idioma: |
Inglês |
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Conteúdo: |
Contents of Nand nonstructural carbohydrate fractions were measured over a year in herbage from a grazed ryegrass-white clover pasture, which had been fertilised with limeammonium nitrate at an annual rate of 0 (No), 112 (N112), and 448 (N448) kg N/ha. Total N wntent of the mixed herbage was often greater than 4% dry weight, and was highest in earlY spring and lowest in late summer. Levels in many cuts were increased significantly by the N448 treatment; the N112 treatment had little effect. The non-protein N and nitrate N contents were also highest in the N448 herbage, particularly in early spring; the level of nitrate N was also high in autumn. Most of the nitrate N occurred in the grass component. Total watersoluble carbohydrates, and those soluble in hot water but insoluble in cold water, usually comprised less than 12% and 1% dry w¢ight respectively of the mixed herbage. Total water-soluble carbohydrates were negatively and significantly correlated with both total N ;;nd "protein" N contents. The total N/total water-soluble carbohydrate ratio was, with one exception, greater than 0.3. No clear seasonal trends in the carbohydrate fractions were evident. Effects due to N treatments were generally small although sometimes significant for lhe hot-water-soluble fraction. The highest level of fertiliser N brought about high total N/total water-soluble carbohydrate ratios, and high herbage nitrate N contents, namely 0.66% dry weight in early spring and an average of 0.45% in August-January. The implications of these results for animal health are discussed. MenosContents of Nand nonstructural carbohydrate fractions were measured over a year in herbage from a grazed ryegrass-white clover pasture, which had been fertilised with limeammonium nitrate at an annual rate of 0 (No), 112 (N112), and 448 (N448) kg N/ha. Total N wntent of the mixed herbage was often greater than 4% dry weight, and was highest in earlY spring and lowest in late summer. Levels in many cuts were increased significantly by the N448 treatment; the N112 treatment had little effect. The non-protein N and nitrate N contents were also highest in the N448 herbage, particularly in early spring; the level of nitrate N was also high in autumn. Most of the nitrate N occurred in the grass component. Total watersoluble carbohydrates, and those soluble in hot water but insoluble in cold water, usually comprised less than 12% and 1% dry w¢ight respectively of the mixed herbage. Total water-soluble carbohydrates were negatively and significantly correlated with both total N ;;nd "protein" N contents. The total N/total water-soluble carbohydrate ratio was, with one exception, greater than 0.3. No clear seasonal trends in the carbohydrate fractions were evident. Effects due to N treatments were generally small although sometimes significant for lhe hot-water-soluble fraction. The highest level of fertiliser N brought about high total N/total water-soluble carbohydrate ratios, and high herbage nitrate N contents, namely 0.66% dry weight in early spring and an average of 0.45% in Au... Mostrar Tudo |
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Palavras-Chave: |
Herbage crops. |
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Thesagro: |
Adubação; Pastagem. |
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Thesaurus Nal: |
Feed composition; Grasslands; Grazing; Lolium; Nitrogen fertilizers; Nonprotein nitrogen. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02434naa a2200277 a 4500
001 1520277
005 2023-05-22
008 1978 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/00288233.1978.10427404$2DOI
100 1 $aROSS, D. J.
245 $aInfluence of fertiliser nitrogen on nitrogen fractions and nonstructural carbohydrates in grazed grass-clover herbage.$h[electronic resource]
260 $c1978
520 $aContents of Nand nonstructural carbohydrate fractions were measured over a year in herbage from a grazed ryegrass-white clover pasture, which had been fertilised with limeammonium nitrate at an annual rate of 0 (No), 112 (N112), and 448 (N448) kg N/ha. Total N wntent of the mixed herbage was often greater than 4% dry weight, and was highest in earlY spring and lowest in late summer. Levels in many cuts were increased significantly by the N448 treatment; the N112 treatment had little effect. The non-protein N and nitrate N contents were also highest in the N448 herbage, particularly in early spring; the level of nitrate N was also high in autumn. Most of the nitrate N occurred in the grass component. Total watersoluble carbohydrates, and those soluble in hot water but insoluble in cold water, usually comprised less than 12% and 1% dry w¢ight respectively of the mixed herbage. Total water-soluble carbohydrates were negatively and significantly correlated with both total N ;;nd "protein" N contents. The total N/total water-soluble carbohydrate ratio was, with one exception, greater than 0.3. No clear seasonal trends in the carbohydrate fractions were evident. Effects due to N treatments were generally small although sometimes significant for lhe hot-water-soluble fraction. The highest level of fertiliser N brought about high total N/total water-soluble carbohydrate ratios, and high herbage nitrate N contents, namely 0.66% dry weight in early spring and an average of 0.45% in August-January. The implications of these results for animal health are discussed.
650 $aFeed composition
650 $aGrasslands
650 $aGrazing
650 $aLolium
650 $aNitrogen fertilizers
650 $aNonprotein nitrogen
650 $aAdubação
650 $aPastagem
653 $aHerbage crops
700 1 $aMOLLOY, L. F.
700 1 $aCOLLIE, T. W.
700 1 $aBALL, R.
773 $tNew Zealand Journal of Agricultural Research$gv. 21, n. 2, p. 231-239, 1978.
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| 1. |  | DRUCKER, D. P.; SALIM, J. A; TREKELS, M.; GROOM, Q.; PARR, C.; SOARES, F. M.; AGOSTINI, K.; SARAIVA, A. M.; MOLLOY, L.; HODSON, S.; GREGORY, A. Plant-pollinator interaction data: a case study of the WorldFAIR Project. Biodiversity Information Science and Standards, v. 6, e94310, 2022. Edição de resumos de The Biodiversity Information Standards (TDWG) annual conference, 2022, Sofia, Bulgaria.| Tipo: Resumo em Anais de Congresso |
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