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Milk odd- and branched-chain fatty acids in relation to the rumen fermentation pattern.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Vlaeminck, Bruno Fievez, V. Tamminga, Saskia Dewhurst, Richard J. Vuuren, Aj van Brabander, Daniël L. De Demeyer, Daniël |
| Copyright Year | 2006 |
| Abstract | The objectives of this study were 1) to determine whether a relationship exists between molar proportions of volatile fatty acids in the rumen and milk odd-and branched-chain fatty acid concentrations (i.e., iso C13:0, anteiso C13:0, iso C14:0, C15:0, iso C15:0, anteiso C15:0, iso C16:0, C17:0, iso C17:0, anteiso C17:0, and cis-9 C17:1); and 2) to evaluate the accuracy of prediction of the latter equations using an independent data set. For development of the regression equations, individual cow data from 10 feeding experiments with rumen-fistulated dairy cows were used, resulting in a data set of 148 observations. Milk odd- and branched-chain fatty acids were closely related to the molar proportions of acetate (SE = 15.3 mmol/mol), propionate (SE = 14.7 mmol/mol), and butyrate (SE = 9.2 mmol/mol). These regression equations were further validated using data from the literature (n = 14). Evaluation of these prediction equations using the independent data set resulted in a root mean square prediction error of 3.0, 9.0, and 8.9% of the observed mean for acetate, propionate, and butyrate, respectively. In addition, less then 5% of the mean square prediction error was due to line bias. This suggests that the currently developed prediction equations based on milk odd- and branched-chain fatty acids show potential to predict molar proportions of individual volatile fatty acids in the rumen. |
| Starting Page | 391 |
| Ending Page | 406 |
| Page Count | 16 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://biblio.ugent.be/publication/718719/file/758287.pdf |
| PubMed reference number | 16960070v1 |
| Volume Number | 89 |
| Issue Number | 10 |
| Journal | Journal of dairy science |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Acetate Amino Acids, Branched-Chain Butyrates Dairy Dietary Fats Eighty Nine Fatty Acids Fatty Acids, Omega-6 Fatty Acids, Volatile Millimole per Mole Mole, unit of measurement Plant Roots Propionates Status Epilepticus negative regulation of methyl-branched fatty acid biosynthetic process rumen bacterium NK4A555 |
| Content Type | Text |
| Resource Type | Article |
