Table 3 Average genomic inbreeding coefficient (FROH) for different length categories of ROH across five chicken populations
Chicken population
Length category (Mb)LayersBroilersWild birds
WL (n= 25)BL (n= 25)BRA (n= 20)BRB (n= 20)RJF (n= 25)
FROH(0.3-1)0.2280.1130.0680.0820.026
FROH(1-2)0.1530.1130.0440.0540.031
FROH(2-4)0.0750.1190.0480.0510.039
FROH(4-8)0.0090.0750.0220.0220.034
FROH(8-10)0.0000.0090.0030.0020.007
FROH(10-16)0.0000.0080.0030.0000.007
FROH(>16)0.0000.0010.0000.0000.001
Total FROH(≥0.3)0.460.440.190.210.14
SD0.020.040.050.020.10
  • FROH ≥0.3Mb = overall genomic inbreeding (average of individuals) at ROH threshold of 0.3 Mb, SD = standard deviation of the total FROH calculated based upon individual FROH, which has been shown in File S1.