Validation of genomic predictions for body weight in broilers using crossbred information and considering breed-of-origin of alleles

Table 5 Mean regression coefficients of GEBV on validation records for BW7 and BW35

Scenario	Reference	Validation	BW7		BW35
Scenario	Reference	Validation	Mean^a	sd^b	Mean^a	sd^b
PB-A	PB	Offspring averages^c	0.51	0.105	0.73	0.069
CB-A	CB	Offspring averages^c	0.36	0.133	0.64	0.158
CB-A-BOA	CB	Offspring averages^c	0.55	0.171	0.59	0.167
PB-I	PB	Individual records	0.51	0.147	0.77	0.080
CB-I	CB	Individual records	0.55	0.070	0.67	0.073
CB-I-BOA	CB	Individual records	0.67	0.202	0.64	0.169

^aReported values are means of 100 replicates. Mean regression coefficients that are closest to 1 per validation record and per trait are in italics
^bReported values are standard deviations of regression coefficients of 100 replicates
^cReported regression coefficients were multiplied by 2 because offspring averages represent half the breeding value of sires

ISSN: 1297-9686