. 2021 Jan 29;100(4):101033. doi: 10.1016/j.psj.2021.101033

Table 4.

Processing weights and yields of 5 strains of broilers fed control or amino acid–reduced diet (with digestible lysine, TSAA, and threonine being 20% lower than the control diet) on day 56.

Strain	Diet	Day 56 processing weights (g)								Day 56 processing yields (% of BW)
Strain	Diet	BW	Carcass	Fat pad	Breast	Tender	Wing	Drum-stick	Thigh	Carcass	Fat pad	Breast	Tender	Wing	Drum-stick	Thigh
Strain 1		3,845	2,764	68.8^a	768	163^a,b	288^b,c	354^b,c	475^b,c	71.6^a,b	1.82^a,b	19.9^b	4.24^a,b	7.46^a,b	9.16^b	12.27^b,c
Strain 2		3,759	2,723	72.1^a	800	167^a	273^c,d	335^c	457^c	72.4^a	1.93^a	21.2^a	4.45^a	7.28^b	8.89^b	12.15^c
Strain 3		4,146	2,985	71.8^a	800	170^a	311^a	396^a	537^a	72.0^a	1.79^a,b	19.3^b,c	4.12^b,c	7.50^a	9.55^a	12.95^a
Strain 4		3,928	2,785	70.6^a	720	153^b	293^b	380^a,b	502^b	70.7^b	1.83^a	18.3^c	3.89^c	7.47^a,b	9.66^a	12.70^a,b
Strain 5		3,669	2,656	56.1^b	791	154^b	269^d	332^c	441^c	72.3^a	1.52^b	21.2^a	4.18^b	7.42^a,b	9.15^b	12.08^c
SEM		60.8	43.3	2.60	17.1	2.69	4.46	7.09	8.71	0.33	0.076	0.27	0.065	0.052	0.091	0.118
	Control	4,016	2,910	65.0^b	838	172^a	296^a	369^a	493^a	72.5^a	1.65^b	20.8^a	4.31^a	7.39	9.21	12.28^b
	Reduced	3,723	2,655	70.7^a	714	154^b	278^b	350^b	472^b	71.1^b	1.90^a	19.2^b	4.05^b	7.46	9.35	12.58^a
	SEM	38.4	27.4	1.64	10.8	1.70	2.82	4.49	5.51	0.21	0.048	0.17	0.041	0.033	0.058	0.075
Strain 1	Control	3,978^a,b,c	2,858^a,b,c	65.4	824^a,b,c	172	294	359	481	71.9	1.66	20.6	4.31	7.39	9.02	12.11
Strain 1	Reduced	3,712^c,d	2,669^b,c,d	72.1	712^c,d,e	154	282	350	469	71.3	1.97	19.1	4.17	7.53	9.30	12.44
Strain 2	Control	3,800^b,c	2,783^a,b,c	71.0	833^a,b	176	277	336	458	73.3	1.89	21.9	4.66	7.29	8.83	12.02
Strain 2	Reduced	3,717^c,d	2,662^b,c,d	73.1	767^b,c,d	157	269	333	457	71.6	1.97	20.6	4.25	7.26	8.96	12.27
Strain 3	Control	4,201^a	3,053^a	70.2	839^a,b	179	317	399	541	72.7	1.78	20.0	4.28	7.54	9.48	12.88
Strain 3	Reduced	4,090^a,b,c	2,917^a,b	73.4	761^b,c,d,e	161	305	394	533	71.3	1.80	18.6	3.96	7.47	9.62	13.02
Strain 4	Control	4,130^a,b	2,945^a,b	63.1	789^b,c,d	164	304	398	517	71.3	1.56	19.1	3.98	7.38	9.61	12.49
Strain 4	Reduced	3,725^c,d	2,625^c,d	78.0	652^e	141	281	362	487	70.1	2.10	17.5	3.80	7.56	9.70	12.91
Strain 5	Control	3,969^a,b,c	2,912^a,b	55.1	905^a	171	286	354	470	73.3	1.37	22.4	4.31	7.36	9.09	11.91
Strain 5	Reduced	3,369^d	2,400^d	57.1	677^d,e	136	251	309	413	71.2	1.68	20.0	4.05	7.48	9.20	12.25
SEM		86.0	61.2	3.67	24.2	3.81	6.31	10.0	12.3	0.46	0.108	0.38	0.091	0.073	0.129	0.168
P-value	Strain	<0.0001	<0.0001	0.0002	0.007	<0.0001	<0.0001	<0.0001	<0.0001	0.002	0.006	<0.0001	<0.0001	0.027	<0.0001	<0.0001
	Diet	<0.0001	<0.0001	0.016	<0.0001	0.002	<0.0001	0.003	0.007	<0.0001	0.0004	<0.0001	<0.0001	<0.0001	0.074	0.007
	Strain × Diet	0.021	0.011	0.367	0.011	0.122	0.201	0.122	0.170	0.561	0.131	0.596	0.588	0.588	0.948	0.927

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