Influence of quantitative trait loci on growth traits of chromosome 1 in Sanjabi lambs during the first year of growth

Abstract This study aimed to detect the quantitative trait loci (QTL) which affecting growth traits in some parts of chromosomes 1 Sanjabi lambs. The population consisted six groups fathers had an average 39.17 Initially, were genotyped for eight microsatellite markers on chromosome 1, and offspring heterozygote genotyped. body’s weight at birth, 3, 6, 9, 12 months, corrected fixed effects year sex, birth type. QTL search was performed by interval mapping based a regression model each cM (Centimorgan) chromosomes. In total, one 235 cM identified from beginning associate with weaning weight. sire substitution effect both families 2.14 kg. confidence estimation detected that estimated using Bootstrap method 225–238 cM 1. determined between MCM137 MCM130 distance about 9 cM marker. If this approved next research, it can be used Marker-assisted selection programs. case, more accuracy should achieved evaluation superior animals.