Table 2. Relative weight of internal organs (g/100 g body weight) of rats.

Data are presented as mean ± SD.

Experimental factors		Stomach	Small intestine	Caecum	Liver	Pancreas	Kidneys	Spleen
CP1 level, %	TA2 level, %
10	0.0	0.41* ± 0.04	2.83* ± 0.54	0.28*a ± 0.04	3.79 ± 0.41	0.34 ± 0.07	0.63* ± 0.03	0.21* ± 0.01
	0.25	0.46* ± 0.04	3.43* ± 0.59	0.34*b ± 0.03	3.96 ± 0.36	0.36 ± 0.06	0.68* ± 0.04	0.19* ± 0.02
	0.5	0.44* ± 0.02	3.14* ± 0.44	0.33*b ± 0.06	4.07 ± 0.40	0.38 ± 0.04	0.65* ± 0.07	0.22* ± 0.04
	1.0	0.45* ± 0.04	3.47* ± 0.52	0.36*b ± 0.03	4.15 ± 0.24	0.42 ± 0.09	0.69* ± 0.05	0.20* ± 0.01
	1.5	0.45* ± 0.05	3.13* ± 0.34	0.34*b ± 0.06	4.16 ± 0.30	0.40 ± 0.12	0.66* ± 0.06	0.19* ± 0.01
	2.0	0.47* ± 0.05	3.42* ± 0.53	0.44*c ± 0.04	3.93 ± 0.25	0.40 ± 0.11	0.67* ± 0.04	0.20* ± 0.03
18	0.0	0.40 ± 0.05	2.77 ± 0.50	0.27a ± 0.02	3.88 ± 0.37	0.38 ± 0.06	0.73 ± 0.05	0.22 ± 0.01
	0.25	0.42 ± 0.03	2.76 ± 0.37	0.30b ± 0.03	4.07 ± 0.37	0.40 ± 0.07	0.70 ± 0.07	0.20 ± 0.04
	0.5	0.42 ± 0.02	3.09 ± 0.49	0.31b ± 0.03	4.00 ± 0.13	0.37 ± 0.05	0.70 ± 0.04	0.22 ± 0.02
	1.0	0.40 ± 0.05	2.84 ± 0.52	0.33b ± 0.04	4.02 ± 0.48	0.37 ± 0.06	0.68 ± 0.03	0.23 ± 0.02
	1.5	0.44 ± 0.04	3.18 ± 0.73	0.36b ± 0.08	4.17 ± 0.46	0.42 ± 0.09	0.70 ± 0.04	0.21 ± 0.05
	2.0	0.43 ± 0.05	2.97 ± 0.62	0.38c ± 0.05	4.24 ± 0.45	0.37 ± 0.06	0.68 ± 0.04	0.22 ± 0.02
SEM		0.005	0.064	0.007	0.042	0.009	0.006	0.003
ANOVA: P values
CP level		< 0.001	0.018	0.027	0.529	0.862	< 0.001	0.037
TA level		0.088	0.465	<0.001	0.365	0.648	0.945	0.205
Interaction		0.720	0.362	0.421	0.732	0.593	0.080	0.790

¹Crude protein.

²Tannic acid.

*Overall mean for rats fed diets with 10% of CP (n = 36) differs significantly from that of rats fed diets with 18% of CP (n = 36).

^a,bLowercase letters refer to the overall means calculated for each level of TA (n = 12), regardless of CP level. Overall means with different letters differ significantly.