Effect of CSN2 and CSN3 haplotypes on milk quality and coagulation properties in Czech Fleckvieh cows
2008
Matejicek, A.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Metejickova, J.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Stipkova, M.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Kyselova, J.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Hanus, O.,Vyzkumny Ustav pro Chov Skotu, Rapotin (Czech Republic) | Gencurova, V.,Vyzkumny Ustav pro Chov Skotu, Rapotin (Czech Republic) | Nemcova, E.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Kott, T.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Sifrova, J.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Krejcova, M.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Melcova, S.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Holzelova, I.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Bouska, J.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic)
Three hundred thirteen Czech Fleckvieh cows were investigated for CSN2 (beta-casein) and CSN3 (kappa-casein) genotypes using the PCR-RFLP method in order to evlauate joint effects of CSN2 and CSN3 haplotypes on milk quality traits and coagulation properties. Twenty haplotype combinations were detected. They had a significant effect on milk protein concentration, true protein conc., casein conc., casein number, coagulation time, curd quality and curd firmness. A positive impact of haplotypes A1A1BB, A1A1AB and A1BAA was observed on most of the observed variables. Haplotypes A1A2BB and A1A2AB were connected with good coagulation properties but low milk production. Haplotypes containing the CSN3 allele E (A1A1BE, A1A2AE, A1A1AE and A1BAE) had a negative effect on most of the variables studied.
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