Blood indexes of nitrite toxicosis in dairy cows

Nitrate (NO_ 3) and nitrite (NO_ 2) can be ingested with water and feeds and NO_ 2 can be produced from NO_ 3 by rumen and intestinal microbes. Moreover,NO_ 3 and NO_ 2 are endogenously produced by cells of various tissues from nitric oxide (NO) and arginine (Passi, 2000). Toxicity of NO_ 3 is casue...

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Main Authors: B. Stefanon, G. Stradaioli, S. Sgorlon
Format: Article
Language:English
Published: Taylor & Francis Group 2011-03-01
Series:Italian Journal of Animal Science
Subjects:
Online Access:http://www.aspajournal.it/index.php/ijas/article/view/1987
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author B. Stefanon
G. Stradaioli
S. Sgorlon
author_facet B. Stefanon
G. Stradaioli
S. Sgorlon
author_sort B. Stefanon
collection DOAJ
description Nitrate (NO_ 3) and nitrite (NO_ 2) can be ingested with water and feeds and NO_ 2 can be produced from NO_ 3 by rumen and intestinal microbes. Moreover,NO_ 3 and NO_ 2 are endogenously produced by cells of various tissues from nitric oxide (NO) and arginine (Passi, 2000). Toxicity of NO_ 3 is casued by the reduction to NO_ 2 in the rumen environment. This ion competes with superoxide for hemoglobin (Doyle et al., 1982), producing methemoglobin (MtHb), which does not carry oxygen. The reaction is reversible, but the transient hypoxia can be exacerbated if the amount of ingested nitrates is high, causing fall of blood pressure and increase of heart rate........
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spelling doaj.art-72c0c799a99047d7b871b10d4444cba92022-12-21T20:03:40ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2011-03-0121S16616810.4081/ijas.2003.s1.166Blood indexes of nitrite toxicosis in dairy cowsB. StefanonG. StradaioliS. SgorlonNitrate (NO_ 3) and nitrite (NO_ 2) can be ingested with water and feeds and NO_ 2 can be produced from NO_ 3 by rumen and intestinal microbes. Moreover,NO_ 3 and NO_ 2 are endogenously produced by cells of various tissues from nitric oxide (NO) and arginine (Passi, 2000). Toxicity of NO_ 3 is casued by the reduction to NO_ 2 in the rumen environment. This ion competes with superoxide for hemoglobin (Doyle et al., 1982), producing methemoglobin (MtHb), which does not carry oxygen. The reaction is reversible, but the transient hypoxia can be exacerbated if the amount of ingested nitrates is high, causing fall of blood pressure and increase of heart rate........http://www.aspajournal.it/index.php/ijas/article/view/1987Nitrites, NOx, Methemoglobin, Cows
spellingShingle B. Stefanon
G. Stradaioli
S. Sgorlon
Blood indexes of nitrite toxicosis in dairy cows
Italian Journal of Animal Science
Nitrites, NOx, Methemoglobin, Cows
title Blood indexes of nitrite toxicosis in dairy cows
title_full Blood indexes of nitrite toxicosis in dairy cows
title_fullStr Blood indexes of nitrite toxicosis in dairy cows
title_full_unstemmed Blood indexes of nitrite toxicosis in dairy cows
title_short Blood indexes of nitrite toxicosis in dairy cows
title_sort blood indexes of nitrite toxicosis in dairy cows
topic Nitrites, NOx, Methemoglobin, Cows
url http://www.aspajournal.it/index.php/ijas/article/view/1987
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