Effect of plant oils and organic acids on rumen fermentation in vitro
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
12058397
DOI
10.1007/bf02817677
Knihovny.cz E-resources
- MeSH
- Rumen metabolism microbiology MeSH
- Fermentation MeSH
- Hydrogen-Ion Concentration MeSH
- Animal Feed MeSH
- Aspartic Acid pharmacology MeSH
- Plant Oils pharmacology MeSH
- Sheep MeSH
- In Vitro Techniques MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Aspartic Acid MeSH
- Plant Oils MeSH
We determined the effect of plant oils (rapeseed, sunflower, linseed) and organic acids (aspartic and malic) on the fermentation of diet consisting of hay, barley and sugar beet molasses. Rumen fluid was collected from two sheep (Slovak Merino) fed with the same diet twice daily. Mixed rumen microorganisms were incubated in fermentation fluid, which contained rumen fluid and Mc Dougall's buffer. All supplemented diets significantly increased pH, molar proportion of propionate, and numerically decreased methane production. Lactate production was also decreased significantly (except with malate). Incorporation of plant oils into aspartate- and malate-treated incubations negated the decrease of butyrate, lactate and the increase of pH and ammonia with malate treatment, as well as in vitro dry matter digestibility and pH with aspartate treatment. The effect of combined additives on methane production and molar proportion of propionate was lower compared with additives supplemented separately. Combination of additives had no additive effect on rumen fermentation. All additives decreased total protozoan counts in rumen fluid.
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