Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67(1), 19-24 | DOI: 10.11118/actaun201967010019

Polymorphisms in CSN3, CSN2 and LGB Genes and Their Relation to Milk Production in Dairy Cattle in the Czech Republic

Jindřich Čítek1, Lenka Hanusová2, Lucie Lískovcová2, Eva Samková3, Oto Hanuš4, Lucie Hasoňová3, Zuzana Křížová1, Libor Večerek1
1 Department of Genetics and Plant Production, Faculty of Agriculture, University of South Bohemia, Branišovská 1645/31a, 370 05 České Budějovice, Czech Republic
2 Department of Animal Sciences, Faculty of Agriculture, University of South Bohemia, Branišovská 1645/31a, 370 05 České Budějovice, Czech Republic
3 Department of Food Biotechnologies and Agricultural Products Quality, Faculty of Agriculture, University of South Bohemia, Branišovská 1645/31a, 370 05 České Budějovice, Czech Republic
4 Dairy Research Institute, Ltd., Ke Dvoru 791/12a, 160 00 Prague, Czech Republic

The principal objective of this study was to perform genotyping of the CSN3, CSN2 and LGB genes in selected dairy cattle breeds in the Czech Republic, to determine genotype and allele frequencies and to perform an associative analysis on milk yield in kg, the percentage of fat and protein content, and fat and protein production in kg. The AA was the most frequent genotype for CSN3 with a frequency of 0.474 and the A allele (0.694). The BB genotype (0.814) and the B allele (0.895) predominated in CSN2 gene. Other genotyping was performed for the A1 and A2 alleles, the most frequent were the A2A2 genotype (0.475) and the A2 allele (0.680). The heterozygous AB genotype with a frequency of 0.900 was the most frequent in the LGB gene. A statistically significant higher protein content was found in the AB genotype in comparison to the BB in gene for CSN2. In the remaining cases, the effect of CSN3, CSN2 and LGB polymorphic variations on the milk production indicators was not statistically significant.

Keywords: dairy cow, milk, milk proteins, heritability
Grants and funding:

The study was supported by grant funding from the National Agency for Agricultural Research (NAZV) of the Ministry of Agriculture of the Czech Republic, project no. QJ1510339 and University of South Bohemia, project GAJU002/2016/Z.

Received: January 4, 2018; Accepted: November 21, 2018; Published: February 28, 2019  Show citation

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Čítek, J., Hanusová, L., Lískovcová, L., Samková, E., Hanuš, O., Hasoňová, L., Křížová, Z., & Večerek, L. (2019). Polymorphisms in CSN3, CSN2 and LGB Genes and Their Relation to Milk Production in Dairy Cattle in the Czech Republic. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 67(1), 19-24. doi: 10.11118/actaun201967010019
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