English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Two analytical procedures for determining volatile fatty acids in the rumen liquid were compared: capillary isotachophoresis (ITP) and gas chromatography. Acetic acid, propionic acid, butyric and valeric acids were determined. No significant differences (n = 53, P ≥ 0.05) have been identified in the amounts of acetic and propionic acids and the results are highly consistent. For butyric acid, the method of gas chromatography yielded higher results with a constant error of approximately 0.5 mmol/l in the whole range of concentration. In terms of diagnostics, however, this size of error is non-significant. In the case of valeric acid a proportional error was found. Gas chromatography yielded higher values, the difference being greater for the low values while for the higher values the results are almost identical. However, valeric acid is a minor acid and its determination is of secondary significance to rumen fermentation assessment. The gas chromatography method is able to clearly differentiate between n and iso forms in the case of butyric and valeric acids. It can be stated that the two analytical methods yield comparable results and both can be used for the needs of practical diagnostics. 6-aminocaproic acid, FFAP capillary column, acetic acid, butyric acid The analysis of volatile fatty acids (VFA) - acetic, propionic, butyric and valeric acids - in the rumen is of considerable clinical and diagnostic significance. To a large degree, it characterizes the metabolism of saccharides and nitrogen substances in the ruminant forestomach environment. The VFA determination can detect different disorders already at the subclinical stage and in this way enable timely and effective action. This is especially important with regard to large-scale breeding where prevention is much more efficient and economical than subsequent treatment. Numerous production diseases are caused mainly by flaws in dietetics and feeding technology, unbalanced feed rations, organic acid surplus in silage and haylage, and feeding non-wholesome or toxic feeds to animals. It is mostly in such cases that the VFA analysis as an integral part of the metabolic profile of the rumen liquid proves irreplaceable and provides valuable evidence (Dvořák et al. 1997; Jagoš et

Determination of the Volatile Fatty Acid Content in the Rumen Liquid: Comparison of Gas Chromatography and Capillary Isotachophoresis