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Articles | Volume 69, issue 4
Articles | Volume 69, issue 4
https://doi.org/10.5194/aab-69-541-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/aab-69-541-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 69, issue 4
Original study
 | 
02 Oct 2026
Original study |  | 02 Oct 2026

Genetic and non-genetic factors influencing milk composition and cow metabolism

Jindřich Čítek, Eva Samková, Michaela Brzáková, Oto Hanuš, Libor Večerek, Eva Jozová, Lucie Hasoňová, Eva Baldíková, Sulaiman Mohammed Iliyasu, and Michael Rost

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Short summary
The aim of this study was to evaluate the influence of genetic and non-genetic factors on the composition of milk and cow metabolism. Farms and lactation stage had a strong effect. Polymorphisms of lipogenic genes had a low effect on milk parameters and the fatty acid profile. The association between β-hydroxybutyric acid and the fat-to-protein ratio was significant. The level of β-hydroxybutyric acid in milk may serve as a field predictor of ketosis in animals.
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