Table 1.

Part 1—number of mice in each age group, body weights, food intakes, and water intakes

Condition and age (weeks)		Group size		Body weight (g)		Food intake (kcal/d)		Water intake (ml/day)
		B6	129	C57BL/6J	129X1/SvJ	C57BL/6J	129X1/SvJ	C57BL/6J	129X1/SvJ
Males fed Teklad 8604
	4	16	16	13.3 ± 0.3a	10.9 ± 0.5a	11.0 ± 0.2a	12.1 ± 0.2a	6.0 ± 0.2d	5.1 ± 0.2a
	6	16	16	21.3 ± 0.4b	21.1 ± 0.4b	11.3 ± 0.3a,b	11.9 ± 0.2a	5.3 ± 0.1a–d	5.2 ± 0.1a
	9	16	16	24.9 ± 0.2c	23.8 ± 0.8b,c	11.8 ± 0.3a–c	12.1 ± 0.3a	5.2 ± 0.2a–d	4.3 ± 0.2a
	12	16	16	27.7 ± 0.4c	26.8 ± 0.7c,d	11.9 ± 0.2a–c	12.9 ± 0.3a,b	4.6 ± 0.2a–c	4.8 ± 0.2a
	15	16	16	28.0 ± 0.5c,d	27.2 ± 0.4c,d	11.7 ± 0.3a–c	12.4 ± 0.2a	4.7 ± 0.1a–c	4.4 ± 0.1a
	20	16	15	30.6 ± 0.7c,d	28.4 ± 0.8d,e	11.4 ± 0.2a	12.1 ± 0.3a	4.6 ± 0.2a–c	4.4 ± 0.3a
	25	16	16	30.7 ± 1.0d	28.2 ± 0.5d,e	11.5 ± 0.3a,b	12.3 ± 0.3a	4.4 ± 0.2a,b	4.4 ± 0.2a
	30	16	16	32.2 ± 0.4d	30.9 ± 0.7e,f	11.0 ± 0.4a	12.1 ± 0.3a	5.7 ± 0.2c,d	4.7 ± 0.4a
	40	16	15	37.4 ± 0.7e	32.4 ± 1.0f,*	12.9 ± 0.3c	12.8 ± 0.3a,b	4.7 ± 0.2a–c	4.0 ± 0.3a
	50	16	16	36.2 ± 0.9e	33.9 ± 0.8f	12.9 ± 0.3b,c	13.9 ± 0.4b	4.7 ± 0.2a–c	3.9 ± 0.2a
Females fed Teklad 8604
	4	16	16	11.5 ± 0.2a	10.0 ± 0.4a	9.8 ± 0.2a	10.4 ± 0.3a	5.2 ± 0.1a	4.5 ± 0.2a
	12	16	16	21.8 ± 0.2b,†	21.4 ± 0.5b,†	11.8 ± 0.3b	10.8 ± 0.3a,b	5.3 ± 0.3a	4.6 ± 0.3a
	25	16	16	24.7 ± 0.3c,†	21.6 ± 0.3b,†	10.9 ± 0.4a,b	9.8 ± 0.3a,b	6.2 ± 0.3a,*,**	3.7 ± 0.2a
	50	16	16	26.4 ± 0.5d,†	24.1 ± 0.5c,†	11.7 ± 0.4b	11.5 ± 0.4b	5.9 ± 0.3a,*,**	4.4 ± 0.3a
Males fed AIN-93G
	4	16	15	13.8 ± 0.4a	10.1 ± 0.5a,*	11.2 ± 0.1a	11.9 ± 0.2a	3.9 ± 0.1a	3.2 ± 0.2a,*,**
	12	16	14	27.4 ± 0.4b	28.7 ± 0.5b	16.0 ± 0.4c	15.7 ± 0.2a	3.4 ± 0.3a	3.2 ± 0.3a,†
	25	16	14	38.0 ± 0.7c,†	33.3 ± 1.5b,c,*,**	13.2 ± 0.3b	11.9 ± 0.4a	4.0 ± 0.3a	4.2 ± 0.7a
	50	16	14	46.5 ± 0.7d,†	35.7 ± 1.2a,*	13.6 ± 0.4b	11.9 ± 0.4a	3.9 ± 0.3a	3.7 ± 0.6a

Letter superscripts show homogenous groups of mice according to strain and dependent variable. For each of the 3 sections of each column, groups with the same letter do not differ significantly from each other, according to post hoc Tukey's tests (P < 0.01).

^*P < 0.01, comparison between strains at the same age;

^†P < 0.01, comparison with males fed Teklad 8604 chow of the same strain and age.