Vol. 8 No. (1): 151 - 159 (2017): ANALYZING QUANTITATIVE TRAIT LOCI AFFECTING EGG QUALITY TRAITS ON CHROMOSOME 1-5 OF SHIKABROWN (Gallus gallus domesticus, Linnaeus 1758) F2 CROSS

This study looked for genes affecting some egg quality traits on chromosome 1-5 and
microsatellite markers attached to them to formed what is called quantitative trait loci,
which can be use in marker assisted selection. Chromosome 1-5 of a population of 205
Shikabrown intercrossed (F2) were scanned for Quantitative trait loci (QTLs) affecting egg
quality traits, using 25 microsatellite markers. QTLs affecting shell thickness, yolk length,
egg weight, yolk weight, albumen weight, shell weight, and albumen length were identified
on these chromosomes. The effects of genotype on these traits were additive, while others
were dominant. Two QTLs located on chromosome 2 (shell thickness and shell weight),
and three QTLs located on chromosome 3 (albumen weight, yolk weight and egg weight)
showed pleiotropic effect. Correlation between these QTLs were positive and significant. It
was concluded that chromosome 1 to 5 of Shikabrown contain QTLs affecting egg quality
traits.

Published: 2024-10-30

ANALYZING QUANTITATIVE TRAIT LOCI AFFECTING EGG QUALITY TRAITS ON CHROMOSOME 1-5 OF SHIKABROWN (Gallus gallus domesticus, Linnaeus 1758) F2 CROSS 1Galadima, M. A., 2Akpa, G. N., 3Adeyinka, A. I., 3Nwagu, B. I., 2Kabir. M. and 1Shehu, D. M.