Table 4. Effect of dietary fennel seed powder supplementation at three levels on carcass traits of broilers.

Parameter1	CN2	LF	MF		HF	P value3
live weight (kg)	2.08 ± 0.12	2.17 ± 0.15	2.18 ± 0.16	2.13 ± 0.15		0.769
CW (kg)	1.94 ± 0.14	2.04 ± 0.16	2.03 ± 0.16	2.01 ± 0.14		0.796
CP (%)	93.27± 2.32	94.07 ± 1.93	93.32 ± 2.32	94.76 ± 0.38		0.980
HEW (kg)	1.80 ± 0.12	1.89 ± 0.05	1.88 ± 0.95	1.85 ± 0.12		0.568
HEP (%)	86.59 ± 2.33	87.68 ± 1.32	86.41 ± 1.48	86.84 ± 1.85		0.899
EW(kg)	1.56 ± 0.10	1.65 ± 0.07	1.64 ± 0.06	1.60 ± 0.08		0.431
EP (%)	75.19 ± 2.37	76.36 ± 1.53	75.62 ± 3.87	75.09 ± 1.36		0.983
AFW (g)	23.05 ± 9.83	17.98 ± 6.43	21.13 ± 7.17	24.76 ± 4.17		0.596
AFP (%)	1.48 ± 0.67	1.09 ± 0.38	1.29 ± 0.45	1.54 ± 0.24		0.518
BMW (kg)	0.54 ± 0.04	0.62 ± 0.07	0.54 ± 0.08	0.52 ± 0.04		0.141
BMP (%)	34.33 ± 1.28ab	37.77 ± 2.23a	32.97 ± 3.85b	32.65 ± 0.99b		0.045
LMW (kg)	0.25 ± 0.03	0.26 ± 0.02	0.22 ± 0.03	0.26 ± 0.04		0.306
LMP (%)	16.24 ± 1.38ab	15.83 ± 0.70ab	13.58 ± 1.20b	16.47 ± 1.66a		0.040
Fat width (mm)	0.72 ± 0.02b	0.93 ± 0.04a	0.71 ± 0.01b	0.74 ± 0.01b		0.022
FWI (mm/kg)	0.35 ± 0.025b	0.43 ± 0.025a	0.33 ± 0.025b	0.35 ± 0.02b		0.011
BMA (cm2)	65.13 ± 1.38a	65.75 ± 3.38a	59.88 ± 4.50ab	56.38 ± 4.99b		0.013
BMAI (cm2/kg)	31.39 ± 1.98ab	30.39 ± 1.56a	27.49 ± 1.82ab	26.35 ± 0.73b		0.002

Notes:

¹CW, carcass weight; CP, carcass percentage; HEW, half-eviscerated weight; HEP, half-eviscerated percentage; EW, eviscerated weight; EP, eviscerated percentage; AFW, abdominal fat weight; AFP, abdominal fat percentage; BMW_, breast muscle weight; BMP_, breast muscle percentage; LMW, leg muscle weight; LMP, leg muscle percentage; FWI, fat width index; BMA, breast muscle area; BMAI, breast muscle area index.

²CN, basal diet without FSP; LF, 0.15% FSP; MF, 0.30% FSP; HF, 0.45% FSP.

³Means within a row lacking a common superscript differ (P < 0.05).