Sammanfattning

Compromised eggshell quality causes considerable economic losses for the egg industry. Breeding for improved eggshell quality has been very challenging. Eggshell quality is a trait that would greatly benefit from marker-assisted selection, which would allow the selection of sires for their direct contribution to the trait and would also allow implementation of measurements integrating a number of shell parameters that are difficult to measure. In this study, we selected the most promising autosomal quantitative trait loci (QTL) affecting eggshell quality on chromosomes 2, 3, 6 and 14 from earlier experiments and we extended the F-2 population to include 1599 F-2 females. The study was repeated on two commercial populations: Lohmann Tierzucht Rhode Island Red line (n=692 females) and a Hy-Line White Plymouth Rock line (n=290 progeny tested males). We analyzed the selected autosomal QTL regions on the three populations with SNP markers at 4-13 SNPs/Mb density. QTL for eggshell quality were replicated on all studied regions in the F-2 population. New QTL were detected for eggshell color on chromosomes 3 and 6. Marker associations with eggshell quality traits were validated in the tested commercial lines on chromosomes 2, 3 and 6, thus paving the way for marker-assisted selection for improved eggshell quality.

Nyckelord

association; breaking strength; chicken; selection; SNP marker

Publicerad i

Animal Genetics
2018, Volym: 49, nummer: 4, sidor: 329-333
Utgivare: WILEY

SLU författare

• de Koning, Dirk-Jan

  • Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Husdjursvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1111/age.12671

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/100899