Table 6.

Egger’s linear regression test for publication bias.

Items	Bias	SE a	t-Value	df a	p-Value
Growth performance
Average daily feed intake	4.1020	3.0431	1.35	23	0.1908
Average daily gain	−2.7391	2.2461	−1.22	25	0.2340
Final body weight	3.3762	2.5073	1.35	23	0.1912
Feed conversion ratio	−9.8262	2.9735	−3.30	23	0.0031
Serum antioxidant indices
MDA	−4.3594	1.1747	−3.71	9	0.0048

^a MDA: malondialdehydes; SE: standard error; df: degree of freedom.