Influence of temperature and humidity on rumen pH and fatty acids in dairy cows

The aim of this study was to investigate the variations of rumen pH and fatty acids (acetic acid, propionic acid, iso-butyric acid, n-butyric acid, iso-valerianic acid, n-valerianic, caproic acid and total fatty acids) in 245 early lactating dairy cows under different temperature and humidity condit...

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Bibliographic Details
Published in:Journal of environmental biology 2012-11, Vol.33 (6), p.1093-1096
Main Authors: Gianesella, M, Piccione, G, Cannizzo, C, Casella, S, Morgante, M
Format: Article
Language:English
Subjects:
Acetic acid
Analysis of Variance
Animals
Cattle
Dairy cattle
Dairying
Environmental conditions
Environmental effects
Environmental science
Fatty acids
Fatty Acids - analysis
Humidity
Hydrogen-Ion Concentration
Ruminantia
Temperature
Variance analysis
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Summary:The aim of this study was to investigate the variations of rumen pH and fatty acids (acetic acid, propionic acid, iso-butyric acid, n-butyric acid, iso-valerianic acid, n-valerianic, caproic acid and total fatty acids) in 245 early lactating dairy cows under different temperature and humidity conditions. The animals were divided into six groups and rumen fluid was collected by rumenocentesis on 22 dairy cows in April (Group A), 33 in May (Group B), 43 in June (Group C), 48 in July (Group D), 36 in September (Group E) and 60 in October (Group F). One-way analysis of variance (ANOVA), followed by the Bonferroni's test, showed a significant effect of environmental variations on all studied parameters (P < 0.0001). Changes in studied parameters can be explained in relation to the microbial population and shift in the optima for rumen conditions associated with variations of environmental conditions. We can affirm that the microbial assemblages that underlie energy and protein supply to wild ruminant are evident especially in relation to temperature and humidity conditions.
ISSN:0254-8704
2394-0379