Table 2.

Performance and carcass characteristics of Ross PM3 male broilers fed with diets differing in CP between 21 and 35 days of age (experiment 1)

	Diets
	CP19%	CP18%	CP17%	CP16%	CP15%	SEM	P-value
Performance 1
BW at day 35 (g)	2460	2470	2466	2451	2461	10.6	0.99
BW gain (g)	1479	1496	1494	1446	1478	12.1	0.72
Feed intake (g)	2430	2477	2472	2459	2528	16.9	0.48
Feed conversion ratio	1.64b	1.65b	1.65b	1.69a	1.71a	0.01	<0.01
Carcass characteristics 2
Breast meat yield (% of BW)	20.1	20.2	20.8	20.5	19.5	0.15	0.08
Abdominal fat (% of BW)	2.16b	2.30ab	2.45a	2.61a	2.51a	0.04	<0.01

¹ n=8/treatment.

² n=32/treatment.

^a,bValues within a row with different superscripts differ significantly at P<0.05.