QTL mapping and milk production traits

MATĚJÍČKOVÁ, J., ŠTÍPKOVÁ, M., SAHANA, G., KOTT, T., KYSELOVÁ, J., KOTTOVÁ, B., ŠEFROVÁ, J., KREJČOVÁ, M. & MELČOVÁ, S. Mapování QTL se vztahem k produkčním parametrům. Náš chov, 2012, roč. 72, č. 12, s. 23-24.{INTLINK}
MATĚJÍČKOVÁ, Jitka, ŠTÍPKOVÁ, Miloslava, SAHANA, G., KOTT, Tomáš, KYSELOVÁ, Jitka, KOTTOVÁ, Blanka, ŠEFROVÁ, Jaroslava, KREJČOVÁ, Michaela and MELČOVÁ, Soňa. QTL mapping and milk production traits. Náš chov, 2012, vol. 72(12), p. 23-24. ISSN 0027-8068.
Year2012
CathegoryPublication in specialized journals
Internal link12184.pdf
Abstract

The objective of this study was to find QTL for milk production traits in Czech Fleckvieh cattle on chromosomes 6, 7, 11, 14 and 23 where QTL were previously identified in other dairy cattle populations. Sixteen grandsire families with totally 352 sires were genotyped for 38 microsatellite markers on the selected chromosomes and their breeding values for milk, protein and fat yields, and protein and fat contents were obtained from central database. A variance component based QTL mapping mo­del was implemented via restricted maximum likelihood (REML) to estimate QTL positions and their effects. A significant QTL affecting fat percentage was found at the beginning of chromosome 14 (0 M), near marker ILSTS039. Suggestive QTL associated with milk production traits appeared on other studied chromosomes (BTA6, BTA7, BTA11, and BTA23).