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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
26/07/1995 |
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Data da última atualização: |
26/07/1995 |
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Autoria: |
JAYASURIYA, M. C. N.; OWEN, E. |
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Título: |
Sodium hydroxide treatment of barley straw; effect of volume and concentration of solution on digestibility and intake by sheep. |
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Ano de publicação: |
1975 |
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Fonte/Imprenta: |
Animal Production, v.21, n.3, p.313-322, 1975. |
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Idioma: |
Inglês |
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Conteúdo: |
1. Four experiments have been carried out to determine the effect of treatment of spring-sown barley straw (var. Deba Abed) with sodium hydroxide (NaOH) solution and subsequent neutralization with hydrochloric acid (HCl) on its digestibility and intake by sheep. 2. In Experiment 1, chopped straw was mixed with 4.5 or 9.0 g NaOH in 200 or 800 ml water/100 g, straw, and after 24 hr neutralized with HCl and left for a further 24 hr before being offered to castred male sheep (weathers) in a maintenance diet containing 35% concentrates. Organic-matter digestibility of straw significantly increased, by 8 and 11 percentage units respectively, after treatment with 200 ml solution containing 4.5 and 9.0 g NaOH. Volume of solution did not affect digestibility. 3. In Experiment 2, straw treated as in Experiment 1 was given ad libitum. The highest intake was for straw treated with 200 ml solution containing 4.5 g NaOH/100 g straw, treatment with 9.0 g NaOH giving a significantly lower intake but higher than that of untreated straw. 4. In Experiment 3, the in vitro digestibility of milled straw, treated as in Experiments 1 and 4, increased with increasing volumes of solution up to 120 ml/100 g straw, but the response to successive increments of NaOH declined progressively. 5. In Experiment 4 chopped straw was mixed with 4.5, 6.75 or 9.0 g NaOH in 30, 60 or 120 ml water/100 g straw and offered as in Experiment 1. Treatments significantly increased straw digestibility, by 8 to 16 percentage units. Increasing the volume of water from 30 to 60 ml significantly improved digestibility, by 5 percentage units at the two lower levels of NaOH. The response to an increase in the level of NaOH was less, and inconsistent. In vitro and in vivo digestibilities were significantly correlated, but it is concluded that the in vitro technique used overestimates tyhe digestibility of treated straw. Menos1. Four experiments have been carried out to determine the effect of treatment of spring-sown barley straw (var. Deba Abed) with sodium hydroxide (NaOH) solution and subsequent neutralization with hydrochloric acid (HCl) on its digestibility and intake by sheep. 2. In Experiment 1, chopped straw was mixed with 4.5 or 9.0 g NaOH in 200 or 800 ml water/100 g, straw, and after 24 hr neutralized with HCl and left for a further 24 hr before being offered to castred male sheep (weathers) in a maintenance diet containing 35% concentrates. Organic-matter digestibility of straw significantly increased, by 8 and 11 percentage units respectively, after treatment with 200 ml solution containing 4.5 and 9.0 g NaOH. Volume of solution did not affect digestibility. 3. In Experiment 2, straw treated as in Experiment 1 was given ad libitum. The highest intake was for straw treated with 200 ml solution containing 4.5 g NaOH/100 g straw, treatment with 9.0 g NaOH giving a significantly lower intake but higher than that of untreated straw. 4. In Experiment 3, the in vitro digestibility of milled straw, treated as in Experiments 1 and 4, increased with increasing volumes of solution up to 120 ml/100 g straw, but the response to successive increments of NaOH declined progressively. 5. In Experiment 4 chopped straw was mixed with 4.5, 6.75 or 9.0 g NaOH in 30, 60 or 120 ml water/100 g straw and offered as in Experiment 1. Treatments significantly increased straw digestibility, by 8 to 16 percentag... Mostrar Tudo |
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Palavras-Chave: |
Palha de cevada. |
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Thesagro: |
Carneiro; Digestibilidade; Hidróxido de Sódio. |
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Thesaurus Nal: |
barley straw; digestibility; sheep; sodium hydroxide. |
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Categoria do assunto: |
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Marc: |
LEADER 02567naa a2200229 a 4500
001 1785025
005 1995-07-26
008 1975 bl --- 0-- u #d
100 1 $aJAYASURIYA, M. C. N.
245 $aSodium hydroxide treatment of barley straw; effect of volume and concentration of solution on digestibility and intake by sheep.
260 $c1975
520 $a1. Four experiments have been carried out to determine the effect of treatment of spring-sown barley straw (var. Deba Abed) with sodium hydroxide (NaOH) solution and subsequent neutralization with hydrochloric acid (HCl) on its digestibility and intake by sheep. 2. In Experiment 1, chopped straw was mixed with 4.5 or 9.0 g NaOH in 200 or 800 ml water/100 g, straw, and after 24 hr neutralized with HCl and left for a further 24 hr before being offered to castred male sheep (weathers) in a maintenance diet containing 35% concentrates. Organic-matter digestibility of straw significantly increased, by 8 and 11 percentage units respectively, after treatment with 200 ml solution containing 4.5 and 9.0 g NaOH. Volume of solution did not affect digestibility. 3. In Experiment 2, straw treated as in Experiment 1 was given ad libitum. The highest intake was for straw treated with 200 ml solution containing 4.5 g NaOH/100 g straw, treatment with 9.0 g NaOH giving a significantly lower intake but higher than that of untreated straw. 4. In Experiment 3, the in vitro digestibility of milled straw, treated as in Experiments 1 and 4, increased with increasing volumes of solution up to 120 ml/100 g straw, but the response to successive increments of NaOH declined progressively. 5. In Experiment 4 chopped straw was mixed with 4.5, 6.75 or 9.0 g NaOH in 30, 60 or 120 ml water/100 g straw and offered as in Experiment 1. Treatments significantly increased straw digestibility, by 8 to 16 percentage units. Increasing the volume of water from 30 to 60 ml significantly improved digestibility, by 5 percentage units at the two lower levels of NaOH. The response to an increase in the level of NaOH was less, and inconsistent. In vitro and in vivo digestibilities were significantly correlated, but it is concluded that the in vitro technique used overestimates tyhe digestibility of treated straw.
650 $abarley straw
650 $adigestibility
650 $asheep
650 $asodium hydroxide
650 $aCarneiro
650 $aDigestibilidade
650 $aHidróxido de Sódio
653 $aPalha de cevada
700 1 $aOWEN, E.
773 $tAnimal Production$gv.21, n.3, p.313-322, 1975.
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Registro original: |
Embrapa Pantanal (CPAP) |
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