Figure 1

QTL profiles from the one-dimensional scan of the indigenous × commercial broiler F ₂ intercross. a) Genome-wide QTL profile for body weight at 10 weeks of age trait (BW10), b) and c) Chromosome scans for the six groups of phenotypes for GGA1 and GGA27, respectively. In a), the dashed black and grey horizontal lines denote the 1% and 5% genome-wide significance thresholds, respectively, while dashed vertical lines separate the chromosomes. Curves are dashed and grey in non-QTL regions and coloured in red for inferred QTL regions. b) and c) show the two major QTL on GGA1 and GGA27 detected in our study to illustrate the consistent peaks among different traits. For those traits with coherent records throughout the whole growth period, only the ones representing different growth stages are included.