Table 3.

Effect of HE on immune organ index^a.

	Treatment
Items	BD	HE1	HE2	SEM	P -value
Thymus index	0.73	0.89	0.80	0.032	0.054
Spleen Index	0.59	0.66	0.58	0.054	0.822
Bursa of Fabricius index	0.43	0.54	0.56	0.027	0.052

Different lowercase letters with the same column date meant significant difference (P ≤ 0.05).

^aEach value represents the mean of 6 replicate pens.