<i>CSN1S1</i> and <i>LALBA</i> Polymorphisms and Other Factors Influencing Yield, Composition, Somatic Cell Score, and Technological Properties of Cow’s Milk
Jindřich Čítek,
Eva Samková,
Michaela Brzáková,
Oto Hanuš,
Libor Večerek,
Irena Hoštičková,
Eva Jozová,
Lucie Hasoňová,
Karolína Hálová
Affiliations
Jindřich Čítek
Department of Genetics and Agricultural Biotechnology, Faculty of Agriculture, University of SouthBohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic
Eva Samková
Department of Food Biotechnologies and Agricultural Products Quality, Faculty of Agriculture, University of South Bohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic
Michaela Brzáková
Institute of Animal Science, Přátelství 815, 104 00 Praha-Uhříněves, Czech Republic
Oto Hanuš
Dairy Research Institute, s.r.o., Ke Dvoru 12a, 160 00 Prague 6, Czech Republic
Libor Večerek
Department of Genetics and Agricultural Biotechnology, Faculty of Agriculture, University of SouthBohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic
Irena Hoštičková
Department of Genetics and Agricultural Biotechnology, Faculty of Agriculture, University of SouthBohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic
Eva Jozová
Department of Genetics and Agricultural Biotechnology, Faculty of Agriculture, University of SouthBohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic
Lucie Hasoňová
Department of Food Biotechnologies and Agricultural Products Quality, Faculty of Agriculture, University of South Bohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic
Karolína Hálová
Department of Food Biotechnologies and Agricultural Products Quality, Faculty of Agriculture, University of South Bohemia in České Budějovice, Studentská 1668, 370 05 České Budějovice, Czech Republic
We evaluated the influence of CSN1S1 and LALBA polymorphisms on cow’s milk yield and quality. The analysis was done on Czech Simmental and Holstein cows. Non-genetic factors were included as well. CSN1S1 did not influence the milk performance in the first lactation. In the second lactation, cows with the BB genotype had significantly higher milk, protein, and fat yields than BC. The differences between LALBA genotypes were non-significant in the first lactation, while in the second lactation, the fat percentage was significantly higher in BB than in AB. The farm significantly influenced milk, protein, and fat yields in both the first and second lactations and fat percentage in the first lactation. The effect of CSN1S1 and LALBA genotypes on the milk technological quality was non-significant. Breed did not influence any of the evaluated technological traits and SCS. The ethanol test was not influenced by farm, season, lactation phase, protein percentage, breed, or non-fat solids percentage. Farm, season, and protein percentage significantly influenced milk fermentation ability, renneting, and SCS. The lactose content is a good indicator of udder health.