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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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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: |
02/07/2025 |
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Autoria: |
FISHER, D. S.; BURNS, J. C. |
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Título: |
Quality analysis of summer-annual forages. II. Effects of forage carbohydrate constituents on silage fermentation. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Agronomy Journal, v. 79, n. 2, p. 242-248, 1987. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Fermentation products and changes in nonstructural carbohydrate fractions with ensiling were examined and related to the unfermented herbage characteristics of 1 Pennisetum americanum, 1 maize and 8 sorghum cv. The buffering capacity of unfermented herbage was found to be greater in sorghum (9.8 ml 0.1 M lactate) than in maize (8.0 ml 0.1 M lactate). Starch was less susceptible to degradation during fermentation than sugar. High levels of starch resulted in fermentation and loss of a smaller proportion of the total nonstructural carbohydrates (TNC). Reductions in TNC ranged from 61 g/kg for P. americanum cv. Tifleaf-I to 239 g/kg for sorghum cv. P-911 at site 1 and from 30 g/kg for sorghum cv. Savanna-5 to 167 g/kg for NK-367 at site 2. Predictive equations for the proportion of TNC retained after ensiling were developed using unfermented herbage characteristics as independent variables. These regression equations accounted for 70-91% of the variation. By wt, the most important fermentation products were lactate (42.9-114.1 g/kg), acetate (9.4-39.4 g/kg) and ethanol (1.4-50.0 g/kg). Only small quantities of substrate were fermented to propionate (0.0-1.3 g/kg), butyrate (0.3-1.6 g/kg) and acetaldehyde (0.4-1.3 g/kg). Palatability was positively correlated with acetate, propionate and total sugars in the silage. |
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Palavras-Chave: |
Cereal crops. |
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Thesagro: |
Silagem; Sorghum Bicolor; Sorgo Granífero. |
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Thesaurus Nal: |
Forage crops; Grain sorghum; Silage fermentation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01970naa a2200217 a 4500
001 1523199
005 2025-07-02
008 1987 bl uuuu u00u1 u #d
100 1 $aFISHER, D. S.
245 $aQuality analysis of summer-annual forages. II. Effects of forage carbohydrate constituents on silage fermentation.
260 $c1987
520 $aAbstract: Fermentation products and changes in nonstructural carbohydrate fractions with ensiling were examined and related to the unfermented herbage characteristics of 1 Pennisetum americanum, 1 maize and 8 sorghum cv. The buffering capacity of unfermented herbage was found to be greater in sorghum (9.8 ml 0.1 M lactate) than in maize (8.0 ml 0.1 M lactate). Starch was less susceptible to degradation during fermentation than sugar. High levels of starch resulted in fermentation and loss of a smaller proportion of the total nonstructural carbohydrates (TNC). Reductions in TNC ranged from 61 g/kg for P. americanum cv. Tifleaf-I to 239 g/kg for sorghum cv. P-911 at site 1 and from 30 g/kg for sorghum cv. Savanna-5 to 167 g/kg for NK-367 at site 2. Predictive equations for the proportion of TNC retained after ensiling were developed using unfermented herbage characteristics as independent variables. These regression equations accounted for 70-91% of the variation. By wt, the most important fermentation products were lactate (42.9-114.1 g/kg), acetate (9.4-39.4 g/kg) and ethanol (1.4-50.0 g/kg). Only small quantities of substrate were fermented to propionate (0.0-1.3 g/kg), butyrate (0.3-1.6 g/kg) and acetaldehyde (0.4-1.3 g/kg). Palatability was positively correlated with acetate, propionate and total sugars in the silage.
650 $aForage crops
650 $aGrain sorghum
650 $aSilage fermentation
650 $aSilagem
650 $aSorghum Bicolor
650 $aSorgo Granífero
653 $aCereal crops
700 1 $aBURNS, J. C.
773 $tAgronomy Journal$gv. 79, n. 2, p. 242-248, 1987.
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