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

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

doi:10.5194/aab-69-541-2026

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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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.

The aim of this study was to evaluate the influence of genetic and non-genetic factors on the...

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