Table 1.

Description of QTLs subjected to meta and combined QTL analysis. CI – confidence interval of QTL region. LC – line cross model. HS – half –sib model with sire or dam common parent. LPS – natural antibodies against lipopolisaccharide. LTA – natural antibodies against lipoteichoic acid. SAb- KLH primary antibody response towards keyhole lymphet heamocynanin. HiLo – F₂ experimental chicken population selected for primary antibody response towards sheep red blood cells. FP - F₂ experimental chicken population selected for a feather pecking behavioral trait . WLZk F₂ experimental chicken population obtained by crossing White Leghorn and Green legged Partridgelike. In bold, QTLs which were used in meta QTL analysis only

Chromosome	Marker	cM	Marker	cM	CI	Model	Trait	Population
9	ROS0078	0	GTC0016	41	0–41	LC	LPS	HiLo *
9	ROS0078	0	GTC0016	41	0–41	LC	LPS	WLZk *
14	MCW0123	45	MCW0225	77	45–71	HS sire	SAb - KLH	WLZk#
14	MCW0123	45	MCW0225	77	45–77	HS/LC	SAb – KLH	HiLo**
14	MCW0136	20	MCW0123	45	0–45	HS dam	SAb - KLH	WLZk*
14	MCW0296	0	MCW0136	20	0–20	LC	LTA	FP *
14	MCW0296	0	ADL0118	20	0–20	HS sire	LTA	FP *
14	MCW0123	45	MCW0225	77	45–77	LC	LTA	HiLo *
18	MCW0045	0	ROS0022	24	0–24	HS sire	LPS	FP*
18	MCW0045	0	MCW0217	25	0–25	HS sire	LPS	WLZk*

^**-QTL statistically significant at P < 0.01

^*-QTL statistically significant at P < 0.05

^#-QTL non-significant