Värv, Sirje; Belousova, Anastassia; Sild, Erkki; Viinalass, Haldja
December 2009
Veterinarija ir Zootechnika;2009, Vol. 48 Issue 70, p93
Academic Journal
The aim of the study was to determine the main polymorphisms in casein beta (CSN2), casein kappa (CSN3) and lactoglobulin beta (LGB) genes in Estonian dairy cattle and compare these among breeds. The study was based on 7 single nucleotide polymorphisms among 122 individuals from three cattle breeds. Allele and genotype frequencies were calculated, and Hardy-Weinberg equilibrium and genotypic disequilibrium tests were performed. Genotypic differentiation was statistically significant between Estonian Red and Estonian Native cattle and between Estonian Red and Estonian Holstein cattle. Regarding CSN3, Estonian Holstein were characterized by a high genotype AA frequency in comparison with the other common AB genotype and higher A-allele and AB genotype frequency for LGB. The proportion of uncommon CSN3 B-allele (BB and BE genotypes) in the studied breeds was higher in the Estonian Red. For CSN2, the A2 allele occurred more frequently in Holstein and Estonian Native cattle than in Estonian Red. The studied genetic variants of milk proteins influence milk yield, milk composition and may have a range of implications for human health. Utilization of natural genetic resources represented by local breeds is helpful in cattle breeding, and in sustaining the breeds.


Related Articles

  • STUDY OF THE MILK PROTEIN GENETIC CHARACTERIZATION IN LATVIAN DAIRY CATTLE BREEDS POPULATIONS. Smiltiņa, Dace; Bāliņš, Andris; Grīslis, Ziedonis // Animals. Health. Food Hygiene: International Scientific Conferen;2010, p125 

    The aim of this study in Laboratory of Molecular Genetic Research of Faculty of Agriculture in LLU was to perform an initial characterization of milk quality at the protein level of β-casein (CSN2) alleles A1 (CSN2A1) and A2 (CSN2A2) and also at the protein level of κ-casein (CSN3) in two...

  • Heritability and correlations of milk traits in the view of kappa-casein genotypes in Vojvodina Holstein-friesian dairy cattle. Vidović, Vitomir; Nemeš, Žolt; Popović-Vranješ, Anka; Lukač, Dragomir; Cvetanović, David; Štrbac, Ljuba; Stupar, Milanko // Mljekarstvo / Dairy;Apr-Jun2013, Vol. 63 Issue 2, p91 

    In the current study, among 420 Holstein cows, the following ratios of K-casein genotypes were found: 0.25 were AA, 0.52 were AB and 0.23 were BB. Frequencies of alleles A and B were 0.51 and 0.49, respectively. Cows with K-casein AA and AB genotypes produced 322.72 and 464.73 kg more milk per...

  • Forward Modeling of Fluctuating Dietary 13C Signals to Validate 13C Turnover Models of Milk and Milk Components from a Diet-Switch Experiment. Braun, Alexander; Schneider, Stephan; Auerswald, Karl; Bellof, Gerhard; Schnyder, Hans // PLoS ONE;Dec2013, Vol. 8 Issue 12, p1 

    Isotopic variation of food stuffs propagates through trophic systems. But, this variation is dampened in each trophic step, due to buffering effects of metabolic and storage pools. Thus, understanding of isotopic variation in trophic systems requires knowledge of isotopic turnover. In animals,...

  • casein.  // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p379 

    A definition of the term "casein," which refers to the principal protein in milk that forms curds at acid pH, is presented.

  • Caseins, caseinates and hydrolysates. Mann, E.J. // Dairy Industries International;Sep96, Vol. 61 Issue 9, p13 

    Focuses on the growing importance of casein production to the food industry. Superior quality of milk proteins over plant proteins; Improvement in the yield and functional characteristics of meat and poultry products.

  • casein:. Schlegel, Rolf H. J. // Encyclopedic Dictionary of Plant Breeding & Related Subjects;2003, p75 

    A definition of the term "Casein," which refers to a protein precipitated in milk and sometimes used for in vitro techniques, is presented.

  • Mapping and analysis of dairy cattle quantitative trait loci by maximum likelihood methodology... Bovenhuis, H.; Weller, J.I. // Genetics;May94, Vol. 137 Issue 1, p267 

    Examines the quantitative trait loci (QTL) in a segregating population of dairy cattle using maximum likelihood methodology. Use of milk protein genes as genetic markers; Estimation of the frequency of the QTL alleles and the residual standard deviation; Parameters used in the estimation;...

  • Milk Protein Polymorphism Study in Some Romanian Sheep Breeds. Vlaic, Augustin; Balteanu, Valentin A.; Carsai, Teodora C. // Bulletin of the University of Agricultural Sciences & Veterinary;2011, Vol. 68 Issue 1/2, p27 

    In sheep, the polymorphism of major milk proteins is reduced as compared with other ruminant species, like cattle and goats. As in other ruminant species, in sheep these polymorphisms were studied relative to milk quantity, quality and it's manufacturing properties or for authenticity...

  • Effect of αS1-casein Polymorphisms on Milk Composition and Cheesernaking Efficiency in Carpathian Goat Breed. Balteanu, Valentin A. // Bulletin of the University of Agricultural Sciences & Veterinary;2011, Vol. 68 Issue 1/2, p71 

    The goat milk among the four caseins, αs1-casein (αs1-CN) locus is the most polymorphic. Eighteen alleles with four different expression levels have been identified so far in different goat breeds, having a significant influence on milk protein, casein, fat contents, manufacturing...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics