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Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis

This experiment was conducted to explore rumen carbon dioxide (CO(2)) species equilibrium. Three lactating, fistulated cattle were consecutively exposed to three dietary treatments tailored to produce low rumen pH and increase the risk of subacute ruminal acidosis (SARA) by reducing physically effec...

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Autor principal: Laporte-Uribe, José A
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7200430/
https://www.ncbi.nlm.nih.gov/pubmed/32704872
http://dx.doi.org/10.1093/tas/txz144
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author Laporte-Uribe, José A
author_facet Laporte-Uribe, José A
author_sort Laporte-Uribe, José A
collection PubMed
description This experiment was conducted to explore rumen carbon dioxide (CO(2)) species equilibrium. Three lactating, fistulated cattle were consecutively exposed to three dietary treatments tailored to produce low rumen pH and increase the risk of subacute ruminal acidosis (SARA) by reducing physically effective neutral detergent fiber (Low (pe)NDF), increasing rumen degradable starch (High RDS) or both (Combined). Under these conditions, high and varied rumen concentrations of the CO(2) associated to water or dissolved CO(2) (dCO(2)) were found. The results suggest that the activity of dCO(2) and bicarbonate (HCO(3)(−)) represents an important component of the rumen environment. Rumen CO(2) holdup was associated with high dCO(2) and HCO(3)(−) activity as well as changes in the viscosity and surface tension of the rumen fluid. All dietary treatments produced low rumen pH, <5.5 for >3 h/d, a condition associated with SARA, but clinical SARA was observed only during CO(2) holdup. This pilot study highlights the possible role of CO(2) holdup and rumen CO(2) species in cattle performance and nutritional diseases. In the future, better estimations of CO(2) species might help clarify these findings.
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spelling pubmed-72004302020-07-22 Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis Laporte-Uribe, José A Transl Anim Sci Ruminant Nutrition This experiment was conducted to explore rumen carbon dioxide (CO(2)) species equilibrium. Three lactating, fistulated cattle were consecutively exposed to three dietary treatments tailored to produce low rumen pH and increase the risk of subacute ruminal acidosis (SARA) by reducing physically effective neutral detergent fiber (Low (pe)NDF), increasing rumen degradable starch (High RDS) or both (Combined). Under these conditions, high and varied rumen concentrations of the CO(2) associated to water or dissolved CO(2) (dCO(2)) were found. The results suggest that the activity of dCO(2) and bicarbonate (HCO(3)(−)) represents an important component of the rumen environment. Rumen CO(2) holdup was associated with high dCO(2) and HCO(3)(−) activity as well as changes in the viscosity and surface tension of the rumen fluid. All dietary treatments produced low rumen pH, <5.5 for >3 h/d, a condition associated with SARA, but clinical SARA was observed only during CO(2) holdup. This pilot study highlights the possible role of CO(2) holdup and rumen CO(2) species in cattle performance and nutritional diseases. In the future, better estimations of CO(2) species might help clarify these findings. Oxford University Press 2019-10-14 /pmc/articles/PMC7200430/ /pubmed/32704872 http://dx.doi.org/10.1093/tas/txz144 Text en © The Author(s) 2019. Published by Oxford University Press on behalf of the American Society of Animal Science. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com.
spellingShingle Ruminant Nutrition
Laporte-Uribe, José A
Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis
title Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis
title_full Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis
title_fullStr Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis
title_full_unstemmed Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis
title_short Rumen CO(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis
title_sort rumen co(2) species equilibrium might influence performance and be a factor in the pathogenesis of subacute ruminal acidosis
topic Ruminant Nutrition
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7200430/
https://www.ncbi.nlm.nih.gov/pubmed/32704872
http://dx.doi.org/10.1093/tas/txz144
work_keys_str_mv AT laporteuribejosea rumenco2speciesequilibriummightinfluenceperformanceandbeafactorinthepathogenesisofsubacuteruminalacidosis