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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
16/03/2017 |
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Data da última atualização: |
16/03/2017 |
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Autoria: |
NAKAMURA, Y.; TADA, Y.; SAITO, O.; YOSHIDA, J.; NAKAMURA, R. |
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Título: |
Nitrate metabolism of microorganisms in the rumen of sheep fed high nitrate italian rye grass silage. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
The Japanese Journal of Veterinary Science v. 52, n. 7, p. 512-518, Jul. 1981. |
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Idioma: |
Japonês |
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Conteúdo: |
Abstract: Whether ensiled Italian ryegrass of high nitrate content would cause poisoning in ruminants was studied. The chopped high nitrate silage containing 0.35 g nitrate/kg body wt was introduced into the rumen of sheep through fistula twice a day for 4 days. On the 1st day of feeding with high nitrate silage, ruminal nitrate disappearance, nitrite appearance and then disappearance rates were slow. These rates increased from 2nd-4th day and maximum nitrite concentration decreased simultaneously as rumen microorganisms adapted to nitrate. The decrease of lactic acid, pH restoration and increased total volatile fatty acids and ammonia were faster in the rumen of animals who showed rapid disappearance of nitrate and nitrite. More vigorous reduction of nitrate and nitrite in vitro was observed without the marked fall of media pH when rumen microorganisms adapted to nitrate. These reduction rates were accelerated by the addition of protozoal fraction. Feeding ensiled high nitrate grass might reduce nitrate toxity for ruminants due to rapid reduction of nitrate and nitrite by rumen microorganisms as the result of providing H donors such as lactate produced in silage fermentation. |
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Palavras-Chave: |
Metabolismo ruminal. |
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Thesagro: |
Alimento para animal; Azevém; Gramínea forrageira; Nitrato; Nutrição animal; Ovino; Silagem. |
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Thesaurus Nal: |
Animal nutrition; Lolium; Metabolism; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02049naa a2200313 a 4500
001 2067184
005 2017-03-16
008 1981 bl uuuu u00u1 u #d
100 1 $aNAKAMURA, Y.
245 $aNitrate metabolism of microorganisms in the rumen of sheep fed high nitrate italian rye grass silage.
260 $c1981
520 $aAbstract: Whether ensiled Italian ryegrass of high nitrate content would cause poisoning in ruminants was studied. The chopped high nitrate silage containing 0.35 g nitrate/kg body wt was introduced into the rumen of sheep through fistula twice a day for 4 days. On the 1st day of feeding with high nitrate silage, ruminal nitrate disappearance, nitrite appearance and then disappearance rates were slow. These rates increased from 2nd-4th day and maximum nitrite concentration decreased simultaneously as rumen microorganisms adapted to nitrate. The decrease of lactic acid, pH restoration and increased total volatile fatty acids and ammonia were faster in the rumen of animals who showed rapid disappearance of nitrate and nitrite. More vigorous reduction of nitrate and nitrite in vitro was observed without the marked fall of media pH when rumen microorganisms adapted to nitrate. These reduction rates were accelerated by the addition of protozoal fraction. Feeding ensiled high nitrate grass might reduce nitrate toxity for ruminants due to rapid reduction of nitrate and nitrite by rumen microorganisms as the result of providing H donors such as lactate produced in silage fermentation.
650 $aAnimal nutrition
650 $aLolium
650 $aMetabolism
650 $aSheep
650 $aAlimento para animal
650 $aAzevém
650 $aGramínea forrageira
650 $aNitrato
650 $aNutrição animal
650 $aOvino
650 $aSilagem
653 $aMetabolismo ruminal
700 1 $aTADA, Y.
700 1 $aSAITO, O.
700 1 $aYOSHIDA, J.
700 1 $aNAKAMURA, R.
773 $tThe Japanese Journal of Veterinary Science$gv. 52, n. 7, p. 512-518, Jul. 1981.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
