Table 1. Means of Feed Intake (g) in Healthy Wistar Rats during the Experimental Period^a.

	weeks
treat- ment	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
C	177.66	178.14	177.45	169.56	175.60	175.82	169.48	172.77	176.01	172.98	173.95	177.55	172.00	174.74	172.82	175.04	174.04	168.97	171.27	169.34
	a	a	a	a	a	a	ab	ab	a	a	a	a	a	a	a	a	a	a	a	a
I	173.08	176.22	171.6	173.61	172.82	171.83	171.5	169.23	167.88	169.13	170.82	174.43	168.33	175.60	173.70	159.77	167.88	164.87	168.63	163.05
	a	a	a	a	a	a	ab	ab	ab	a	a	a	a	a	a	a	a	a	a	a
ATC	178.16	176.33	173.96	173.18	176.37	173.04	171.16	173.25	164.49	170.05	172.05	171.37	163.73	174.04	169.82	168.15	164.53	169.86	166.93	168.03
	a	a	a	a	a	a	ab	a	ab	a	a	a	a	a	a	a	a	a	a	a
ATE	175.83	176.13	164.77	168.13	174.96	173.87	177.11	172.45	168.56	167.92	171.10	175.74	166.99	167.72	168.20	169.87	164.69	163.84	163.41	162.06
	a	a	a	a	a	a	a	ab	ab	a	a	a	a	a	a	a	a	a	a	a
AS	171.22	172.94	174.77	177.32	175.87	175.89	174.81	176.25	157.53	170.51	165.62	176.19	170.12	174.26	169.39	167.17	165.64	162.82	165.82	169.49
	a	a	a	a	a	a	ab	a	b	a	a	a	a	a	a	a	a	a	a	a
RS	177.52	176.22	175.02	174.51	173.68	168.96	161.69	160.29	167.30	164.23	164.48	172.14	160.91	172.45	163.20	165.32	167.07	158.17	157.83	163.70
	a	a	a	a	a	a	b	b	ab	a	a	a	a	a	a	a	a	a	a	a
SEM	2.91	3.75	4.06	3.97	2.71	3.80	4.61	4.03	4.44	3.79	6.51	3.07	5.61	4.81	4.46	6.71	5.24	6.94	5.01	6.21
p value	0.69	0.96	0.19	0.50	0.98	0.69	0.03	0.02	0.02	0.17	0.31	0.80	0.21	0.69	0.30	0.10	0.44	0.16	0.09	0.50

^aThe designation ab means that different letters between columns are statistically different (p < 0.05).