Table 5.

Mean and standard deviation of breeding values of various traits predicted from the two methods for birds with low or high SRBC.

Model	Group 1	Ab-AIV 2	SRBC	Ab-NDV	H/L	IgG	SII	TII	TW	SW
BLUP	SRBCeff	9.240 ± 1.964	9.567 ± 0.504	5.500 ± 1.303	0.446 ± 0.358	651.166 ± 330.626	0.140 ± 0.036	0.438 ± 0.152	6.541 ± 2.554	2.054 ± 0.585
GBLUP	SRBCeff	9.346 ± 1.788	9.300 ± 0.651	5.500 ± 1.251	0.442 ± 0.358	545.036 ± 252.567	0.141 ± 0.029	0.450 ± 0.163	6.794 ± 0.714	2.103 ± 0.517
	p-value 3	0.841	0.081	1.000	0.968	0.191	0.898	0.780	0.714	0.734
BLUP	SRBCineff	9.708 ± 1.301	5.533 ± 0.860	5.818 ± 1.468	0.611 ± 0.352	558.716 ± 296.872	0.151 ± 0.049	0.440 ± 0.117	6.757 ± 2.012	2.297 ± 0.793
GBLUP	SRBCineff	9.870 ± 1.180	5.933 ± 1.048	5.789 ± 1.548	0.512 ± 0.240	591.997 ± 282.724	0.146 ± 0.047	0.466 ± 0.141	7.078 ± 2.287	2.201 ± 0.780
	p-value	0.659	0.112	0.952	0.208	0.693	0.678	0.440	0.573	0.639

¹ SRBCeff, the top 30 chickens with efficient values and high anti-SRBC antibody titer; SRBCineff, the bottom 30 chickens with inefficient values and low anti-SRBC antibody titer; ² Ab-AIV, antibody response to avian influenza virus; SRBC, sheep red blood cell antibody titer; Ab-NDV, antibody response to Newcastle disease virus; H/L, the ratio of heterophils to lymphocytes; IgG, immunoglobulin G (ng/ml); SII (%), spleen immune index; TII (%), thymus immune index; TW (g), thymus weight at 100 d; SW (g), spleen weight at 100 d; ³ Student’s t-test.