1989
DOI: 10.1016/0377-8401(89)90151-x
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Oven and stack ammoniation of grass hays. 1. Changes in chemical composition in relation to digestibility in vitro and cell-wall degradability

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Cited by 18 publications
(5 citation statements)
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“…These modifications lead to an increased swelling of the cell walls [4,12,23] and consequently, an improved accessibility of cell wall polysaccharides to glycolytic enzymes. Ammonia treatment appreciably increases the digestibility of grasses [25,[31][32][33] but its effect on lucernes is less marked [3]. It [19].…”
mentioning
confidence: 99%
“…These modifications lead to an increased swelling of the cell walls [4,12,23] and consequently, an improved accessibility of cell wall polysaccharides to glycolytic enzymes. Ammonia treatment appreciably increases the digestibility of grasses [25,[31][32][33] but its effect on lucernes is less marked [3]. It [19].…”
mentioning
confidence: 99%
“…Furthermore, Figure (2) and Table (1)showed that the maximum activity (470U/ml)was obtained at high alkaline pH reached 10 , glucose (5.0 g/l) as a carbon sources, and peptone(7.5 g/l) as a nitrogen sources indicating that the enzyme was more active in alkaline conditions. It was observed that the enzyme production was enhanced in alkaline conditions which could be an indicative of the alkalophylic nature of the microorganism as previously mentioned by [12].While, Boughachiche et al [13] found that the optimum pH for protease production by…”
Section: Resultsmentioning
confidence: 71%
“…Estes resultados foram semelhantes aos observados por MASON et al (1989aMASON et al ( , 1989b, os quais observaram que a aplicação de NH 3 ou de uréia pode aumentar a retenção de N na parede celular, principalmente quando o tratamento é efetuado sob altas temperaturas. Da mesma forma, REIS et al (1990bREIS et al ( , 1991 e ROSA e REIS (1995) registraram aumento nos valores de N retido na parede celular, quando trataram fenos de gramíneas tropicais com NH 3 ou com uréia, sob temperatura ambiente.…”
Section: Resultsunclassified
“…De maneira geral, com a amonização observa-se elevação de 0,8 a 1,0 unidade percentual no conteúdo de N dos volumosos, correspondendo a 5,0 a 6,0 unidades de proteína bruta (SUNDSTOL e COXWORTH, 1984;BERGER et al, 1994). De acordo com BUETTNER et al (1982), DRYDEN e KEMPTON (1984), MASON et al REIS et al (1989a, 1989b, nos volumosos tratados com fontes de amônia, o N pode ser retido sob diferentes formas e, segundo KRISSHNAMOORTHY et al (1982), SNIFFEN et al (1992) e VAN SOEST e FOX (1992), as formas de N retido mais importantes em termos nutricionais são o N solúvel em água, o N amoniacal (N-NH 3 ), o N retido na fração insolúvel em detergente neutro (NIDN) e o N retido na fração insolúvel em detergente ácido (NIDA).…”
Section: Introductionunclassified
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