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MARKER-ASSISTED SELECTION OF DAIRY COWS FOR Β-CASEIN GENE A2 VARIANT

Authors     Sebastiani C, Arcangeli C, Torricelli M, Ciullo M, D’Avino N, Cinti G, Fisichella S, Biagetti M

Abstract    Many studies highlighted potential associations of β-casein A1 with specific human diseases and a minor digestibility of milk, due to the bioactive peptide β-casomorphin 7 (BCM-7) release during digestion. Conversely, the ancestral β-casein A2 variant seems to be a favorable trait because it is not associated with BMC-7 release. The aim of this work was to evaluate frequencies of β-casein variants in offspring of previously genotyped cows inseminated with A2 homozygous semen. The frequency of the A2/A2 animals has almost doubled from 37 to 69%. These are encouraging results with the perspective of reaching the goal of producing A2 milk.

Publish Date  2022

Volume   34 (2)

ISSN   1120-1770

DOI   doi.org/10.15586/ijfs.v34i2.2178

URL  https://www.itjfs.com/index.php/ijfs/article/view/2178

Journal    Italian Journal of Food Science

Pages   9-15

PMID  no