Table 2.

Effects of curcumin on production performance in laying hens.

Item	Control	100 mg/kg	150 mg/kg	200 mg/kg
Egg production (%)	74.74 ± 0.02A,a	81.22 ± 0.03A,B,b	83.40 ± 0.05B	75.90 ± 0.02A,a
AEV (g)	58.91 ± 2.11	57.49 ± 1.07	55.42 ± 1.04	56.78 ± 1.48
ADFI (g)	106.55 ± 5.89	102.29 ± 1.44	103.98 ± 2.48	102.24 ± 1.25
Feed conversion ratio	2.42 ± 0.07B	2.19 ± 0.08A	2.16 ± 0.09A	2.37 ± 0.03B

Abbreviations: ADFI, average daily feed intake; AEV, average egg weight.

^a,bMeans within a row with different superscripts differ significantly (P < 0.05).

^A,BDifferent capital superscripts within a row indicate a highly significant difference (P < 0.01).

Values are mean ± SE of 15 hens. Data with different superscript letters are significantly different (P < 0.05).