Relative reticulo-rumen pH indicators for subacute ruminal acidosis detection in dairy cows

Subacute ruminal acidosis (SARA) is usually characterized by abnormal and intermittent drops in rumen pH. Nevertheless, high individual animal variability in rumen pH and the difference in measurement methods for pH data acquisition decrease the sensitivity and accuracy of pH indicators for detectin...

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Bibliographic Details
Published in:Animal (Cambridge, England) England), 2018-03, Vol.12 (3), p.481-490
Main Authors: Villot, C., Meunier, B., Bodin, J., Martin, C., Silberberg, M.
Format: Article
Language:English
Subjects:
Acetic acid
Acidosis
Animal lactation
Animals
Cattle
Dairy cattle
dairy cow
Data acquisition
Data processing
Diet
Drift
Dry matter
Experiments
Feeds
Indicators
Kinetics
Life Sciences
Lipopolysaccharides
Mathematical analysis
Measurement methods
Measurement techniques
Milk
Noise
Normalizing
Nutrient deficiency
Nutrition
pH effects
Propionic acid
relative pH indicators
Research Article
reticulo-rumen pH sensor
Rumen
Sensors
Signal processing
Standard deviation
Starch
subacute ruminal acidosis (SARA)
Variability
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Summary:Subacute ruminal acidosis (SARA) is usually characterized by abnormal and intermittent drops in rumen pH. Nevertheless, high individual animal variability in rumen pH and the difference in measurement methods for pH data acquisition decrease the sensitivity and accuracy of pH indicators for detecting SARA in ruminants. The aim of this study was to refine rumen pH indicators in long-term SARA based on individual dairy cow reticulo-rumen pH kinetics. Animal performances and rumen parameters were studied weekly in order to validate SARA syndrome and rumen pH was continuously measured using reticulo-rumen sensors. In total, 11 primiparous dairy cows were consecutively fed two different diets for 12 successive weeks: a control diet as low-starch diet (LSD; 13% starch for 4 weeks in period 1), an acidotic diet as high-starch diet (HSD; 32% starch for 4 weeks in period 2), and again the LSD diet (3 weeks in period 3). There was a 1-week dietary transition between LSD and HSD. Commonly used absolute SARA pH indicators such as daily average, area under the curve (AUC) and time spent below pH
ISSN:1751-7311
1751-732X
DOI:10.1017/S1751731117001677