Cyclic fluctuations in acetone concentrations in the blood and milk of clinically healthy dairy cows
| dc.contributor.author | Apps, P.J. | |
| dc.contributor.author | Giesecke, W.H. | |
| dc.contributor.editor | Verwoerd, Daniel Wynand | |
| dc.contributor.upauthor | Winterbach, Hanlie Evelyn Kathleen | |
| dc.contributor.upauthor | Petzer, Inge-Marie | |
| dc.date.accessioned | 2014-01-28T07:01:52Z | |
| dc.date.available | 2014-01-28T07:01:52Z | |
| dc.date.created | 2013 | |
| dc.date.issued | 1993 | |
| dc.description | The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format. | en |
| dc.description.abstract | Milk samples were taken daily or twice weekly, and blood samples twice weekly, from six clinically healthy dairy cows. Acetone concentration was determined by a new headspace gas-chromatographic method that proved to be suitable in terms of practicality, sensitivity and precision. The concentration of acetone in milk was closely correlated with that in blood (r² = 0,967). There was no relationship between lacteal acetone concentration and either somatic cell count or bacterial infection. In both blood and milk there were fluctuations in acetone concentration that were synchronous between the six cows. The fluctuations were apparently cyclic, with a period of approximately 10 d. Such fluctuations have not previously been reported. | en |
| dc.description.librarian | mn2014 | |
| dc.identifier.citation | Winterbach, HEK, Apps, PJ, Giesecke, W & Petzer, IM 1993, 'Cyclic fluctuations in acetone concentrations in the blood and milk of clinically healthy dairy cows’, Onderstepoort Journal of Veterinary Research, vol. 60, no. 3, pp. 247-255. | en |
| dc.identifier.issn | 0330-2465 | |
| dc.identifier.uri | http://hdl.handle.net/2263/33121 | |
| dc.language.iso | en | en |
| dc.publisher | Published by the Agricultural Research Council, Onderstepoort Veterinary Institute | en |
| dc.rights | © ARC-Onderstepoort (original). © University of Pretoria. Dept of Library Services (digital). | en |
| dc.subject | Veterinary medicine | en |
| dc.subject.lcsh | Veterinary medicine -- South Africa | |
| dc.title | Cyclic fluctuations in acetone concentrations in the blood and milk of clinically healthy dairy cows | en |
| dc.type | Article | en |