Table 2

Quantitative trait loci for growth rate at different ages
Chromosome Position (cM) F ratio1 CI2 Flanking markers Additive effect ± SE Dominance effect ± SE VP (%)3
Growth rate at 3–6 weeks of age, (g/d)
1 130 14.1** 95 – 237 LEI0068-LEI0146 1.48 ± 0.28 -0.06 ± 0.40 4.7
2 282 10.2** 15 – 382 ROS0074-ADL0114 1.34 ± 0.30 0.59 ± 0.49 3.3
3 49 17.2** 23 – 128 MCW0083-HUJ0006 2.11 ± 0.36 0.52 ± 0.66 5.9
3 237 7.1 13 – 266 MCW0040-LEI0166 0.61 ± 0.30 1.51 ± 0.46 2.2
4 0 11.2** 0 - 37 ADL0317-MCW0295 1.29 ± 0.27 -0.27 ± 0.40 3.7
4 163 21.0** 140 - 183 ADL0241-MCW0180 3.33 ± 0.51 0.83 ± 1.38 7.2
6 11 7.5 0 – 45 ROS0062-ROS0003 0.54 ± 0.33) -1.82 ± 0.54 2.4
11 0 7.1 0 – 67 LEI0110-MCW0097 1.02 ± 0.27 0.37 ± 0.39 2.2
13 57 4.5 19 – 71 MCW0340-ADL0225 1.31 ± 0.42 -0.57 ± 0.88 1.4
Growth rate at 6–12 weeks of age, (g/d)
1 578 7.5* 65 - 601 ADL0183-MCW0107 1.63 ± 0.51 2.96 ± 1.44 2.6
3 13 9.8* 0 – 158 MCW0169-MCW0083 1.48 ± 0.36 -1.16 ± 0.65 3.9
4 168 27.0** 146 – 183 ADL0241-MCW0180 3.49 ± 0.48 0.01 ± 1.16 2.6
9 97 5.6 0 – 121 MCW0135-ROS0030 0.38 ± 0.37 -2.24 ± 0.72 1.9
27 0 10.7** - ROS0071 1.18 ± 0.28 0.62 ± 0.39 3.9
Growth rate at 12–24 weeks of age, (g/d)
8 15 9.7** 7- 87 ROS0026-MCW0305 0.98 ± 0.26 0.93 ± 0.38 4.6
Growth rate at 24–48 weeks of age, (g/d)
3 2 8.8* 1 – 266 MCW0169-MCW0083 0.70 ± 0.18 -0.45 ± 0.26 4.0
3 221 8.7* 3 – 236 ADL0237-MCW0040 0.35 ± 0.16 -0.91 ± 0.24 4.0
4 183 6.6 29 – 183 ADL0241-MCW0180 0.63 ± 0.19 0.46 ± 0.36 2.9
28 42 6.1 0 - 42 ROS0085-ADL0299 0.48 ± 0.16 -0.40 ± 0.24 2.7
Growth rate at 48–72 weeks of age, (g/d)
2 365 7.8 138 – 383 MCW0056-MCW0157 -2.74 ± 13.35 8.06 ± 4.33 3.7
4 12 6.0 0 – 183 ADL0317-MCW0295 -0.04 ± 22.41 7.45 ± 11.85 2.7
7 92 7.6 0 – 93 LEI0064-ROS0019 -7.75 ± 26.28 3.21 ± 18.35 3.6

1 Significant at 0.05 (*) and 0.01 (* *) levels experiment-wide, and () suggestive.

2 CI = 95% confidence interval.

The position on the chromosome with supporting F-values, additive and dominance effects and the proportion of phenotypic variance (VP) explained by QTL at successive intervals from 3 to 72 weeks of age for an F2 broiler-layer cross. Dominance effects in bold are >2 SE (P < 0.05).

Podisi et al.

Podisi et al. BMC Genetics 2013 14:22   doi:10.1186/1471-2156-14-22

Open Data