Table 5.

The meat quality of 5 strains of broilers fed control or AA-reduced diet on day 42 (pH and lightness) and 56 (pH, lightness, cook loss, and shear force).

Treatment		day 42		day 56
Strain	Diet	pH 24 h	L∗1	pH 24 h	L∗	Cook loss (%)	Shear force (N)
Strain 1		5.94a	64.6	5.82b	63.9	26.8	17.7
Strain 2		5.89a,b	65.3	5.82b	64.4	26.1	16.6
Strain 3		5.83b	65.3	5.80b	64.6	27.5	17.8
Strain 4		5.91a	64.4	5.83a,b	63.7	25.8	16.1
Strain 5		5.92a	64.5	5.91a	63.4	27.6	17.1
SEM		0.019	0.29	0.021	0.43	1.07	0.87
	Control	5.92a	65.1a	5.86a	64.2	25.8b	17.2
	Reduced	5.87b	64.5b	5.81b	63.8	27.7a	16.9
	SEM	0.012	0.185	0.013	0.26	0.68	0.55
Strain 1	Control	5.95	64.6	5.84	63.6	26.2	17.7a,b
Strain 1	Reduced	5.93	64.5	5.79	64.1	27.4	17.6a,b
Strain 2	Control	5.90	65.6	5.83	64.6	24.8	16.0a,b
Strain 2	Reduced	5.87	65.0	5.81	64.3	27.5	17.1a,b
Strain 3	Control	5.85	65.9	5.82	64.5	28.1	15.6a,b
Strain 3	Reduced	5.82	64.8	5.77	64.6	26.9	20.1a
Strain 4	Control	5.95	64.6	5.86	64.0	22.5	18.3a,b
Strain 4	Reduced	5.86	64.1	5.81	63.4	29.1	13.9b
Strain 5	Control	5.95	64.8	5.96	64.1	27.3	18.5a,b
Strain 5	Reduced	5.89	64.3	5.87	62.8	27.9	15.7a,b
SEM		0.026	0.41	0.029	0.60	1.51	1.23
P-value	Strain	0.002	0.054	0.003	0.260	0.675	0.601
	Diet	0.003	0.035	0.007	0.370	0.044	0.642
	Strain × diet	0.787	0.749	0.839	0.612	0.124	0.006

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

¹L∗ = Lightness.