Identification of QTL regions and candidate genes for growth and feed efficiency in broilers

Table 4 Estimates of genetic and phenotypic correlations between growth and feed efficiency traits using the relationship matrix that blends genomic and pedigree information

Traits^a	BW28	BW42	ADFI	RFI	RFIa	ADG	FCR	AbF
BW28		0.87 ± 0.03	0.50 ± 0.08	− 0.09 ± 0.10	− 0.02 ± 0.12	0.39 ± 0.10	0.15 ± 0.12	0.23 ± 0.09
BW42	0.77 ± 0.01		0.77 ± 0.04	0.03 ± 0.10	0.09 ± 0.12	0.79 ± 0.04	− 0.08 ± 0.12	0.26 ± 0.08
ADFI	0.41 ± 0.02	0.78 ± 0.01		0.63 ± 0.07	0.57 ± 0.09	0.83 ± 0.04	0.26 ± 0.12	0.45 ± 0.08
RFI	− 0.02 ± 0.02	− 0.01 ± 0.02	0.55 ± 0.01		0.83 ± 0.03	0.17 ± 0.12	0.75 ± 0.06	0.48 ± 0.08
RFIa	− 0.01 ± 0.02	− 0.01 ± 0.02	0.47 ± 0.02	0.92 ± 0.00		0.19 ± 0.14	0.57 ± 0.09	0.05 ± 0.11
ADG	0.17 ± 0.02	0.76 ± 0.01	0.79 ± 0.01	0.00 ± 0.02	0.00 ± 0.02		− 0.33 ± 0.12	0.19 ± 0.10
FCR	0.26 ± 0.02	− 0.19 ± 0.02	0.05 ± 0.02	0.71 ± 0.01	0.61 ± 0.01	− 0.56 ± 0.01		0.37 ± 0.10
AbF	0.29 ± 0.02	0.35 ± 0.02	0.46 ± 0.02	0.32 ± 0.02	− 0.01 ± 0.02	0.26 ± 0.02	0.17 ± 0.02

^aUpper diagonal is genetic correlation, and lower diagonal is phenotypic correlation
BW28, body weight at 28 d of age; BW42, body weight at 42 d of age; ADFI, average daily feed intake; RFI, residual feed intake; RFIa, residual feed intake adjusted for weight of abdominal fat; ADG, average daily gain; FCR, feed conversion ratio; AbF, weight of abdominal fat

ISSN: 1297-9686