Table 5.

The carcass and internal organ weights (g) of 5 strains of broilers fed a control or AA-reduced diet on day 40.

Strain	Diet	Carcass1	Proventriculus	Gizzard	Heart	Liver	Pancreas	Bursa	Spleen
Strain1		2,120	8.02	37.14a	11.54a,b,c	45.26a,b	4.54	3.09b	2.33
Strain2		2,032	7.42	33.58a,b	11.21b,c	42.60b	4.32	2.99b	2.03
Strain3		2,260	8.27	35.11a	13.05a	48.81a	4.69	3.94a	2.05
Strain4		2,138	8.19	34.51a	12.32a,b	46.68a,b	4.67	3.73a,b	1.96
Strain5		1,967	6.84	29.95b	10.63c	42.49b	4.24	3.60a,b	2.09
SEM2		43.8	0.293	1.014	0.418	1.410	0.179	0.210	0.147
	Control	2,176	7.78	35.98a	11.84	45.14	4.68a	3.60	2.13
	Reduced	2,031	7.71	32.14b	11.66	45.19	4.30b	3.34	2.05
	SEM	27.7	0.185	0.641	0.264	0.892	0.113	0.133	0.093
Strain 1	Control	2,128a,b	8.69a	39.19	11.32	45.06	4.70	3.42	2.48
Strain 1	Reduced	2,113a,b	7.34a,b	35.09	11.76	45.47	4.38	2.76	2.18
Strain 2	Control	2,124a,b	7.51a,b	36.52	11.98	43.67	4.57	2.89	1.80
Strain 2	Reduced	1,940a,b	7.33a,b	30.65	10.43	41.53	4.06	3.10	2.27
Strain 3	Control	2,278a	8.13a,b	35.34	12.84	49.82	4.85	4.04	2.07
Strain 3	Reduced	2,242a	8.41a,b	34.88	13.27	47.80	4.54	3.84	2.03
Strain 4	Control	2,173a,b	7.58a,b	35.52	11.94	43.71	4.60	3.91	2.12
Strain 4	Reduced	2,104a,b	8.80a	33.50	12.70	49.66	4.75	3.54	1.80
Strain 5	Control	2,179a,b	6.99a,b	33.32	11.13	43.46	4.70	3.75	2.20
Strain 5	Reduced	1,755c	6.68b	26.58	10.13	41.52	3.78	3.45	1.99
SEM		61.9	0.414	1.434	0.591	1.994	0.253	0.298	0.208
P-value	Strain	0.0002	0.003	0.0002	0.0001	0.011	0.262	0.011	0.477
	Diet	0.0004	0.792	<0.0001	0.627	0.967	0.021	0.171	0.551
	Strain × Diet	0.010	0.036	0.268	0.168	0.145	0.305	0.705	0.318

^a–cMeans in a column not sharing a common superscript were different (P < 0.05).

¹Carcass weight = chicken BW without the proventriculus, gizzard, heart, liver, pancreas, bursa of Fabricius, spleen, or intestine.

²SEM = standard error of mean; n = 16, 40, and 8 for treatments of strain, diet, and interaction of strain and diet, respectively.