Detection of QTL for traits related to adaptation to sub-optimal climatic conditions in chickens

Table 2 Body weight (g), comb area (cm²), shank length (cm), and immune trait (SRBC) in the F0 L2 and R- lines and their F2 female progeny from hatch to 16 weeks of age

Female	L2		R-		p value	F2
Trait	Mean	SD	Mean	SD		Mean	SD
BW00	25.7	2.5	35.8	1.9	<0.0001	32.4	2.5
BW04	285.1	40.2	220	28.7	0.0014	256.5	48.3
BW08	829.2	86.1	610	96.0	<0.0001	735.2	148.1
BW12	1312.4	126.7	933.1	128.6	<0.0001	1147.1	249.2
BW16	1675.5	143.7	1170.4	195.6	<0.0001	1526.5	309.2
CA16	10.2	5.3	3.0	1.0	0.0022	4.8	2.5
SL08	–	–	–	–	–	6.2	0.7
SRBC00	–	–	–	–	–	0.3	0.8
SRBC07	5.6	1.5	5.4	1.3	0.78	3.1	2.2
SRBC14	5.0	1.4	3.4	1.0	0.01	3.1	1.7

BW00, 04, 08, 12, 16: body weight at hatch, at 4, 8, 12, and 16 weeks of age; CA16: size of comb area at 16 weeks of age; SRBC00, 07, 14: baseline antibody level, antibody level at 7 and 14 days after primary immunization of sheep red blood cell; SD: standard deviation; the p-value corresponds to the significance level of the comparison between L2 and R- lines, for each trait

ISSN: 1297-9686