The Jackson Laboratory

Body Weight Information for B6N (005304)

JAX® Mice Strain C57BL/6NJ

Stock Number 005304

Groups of 80 females and 80 males were weighed weekly. Mice were fed a diet containing 6% fat (LabDiet® 5K52 formulation). Values represent mean and one standard deviation. Ages are ± 3 days.


Body Weight
(grams; mean ± st. dev.)
Age (weeks) Females Males
3 9.4 ± 1.9 9.9 ± 2.0
4 14.3 ± 1.7 16.8 ± 2.7
5 17.0 ± 1.2 21.1 ± 1.6
6 18.2 ± 1.4 24.0 ± 1.0
7 19.3 ± 1.1 25.2 ± 1.3
8 20.3 ± 1.2 26.2 ± 1.2
9 20.8 ± 1.4 27.4 ± 1.4
10 21.4 ± 1.4 28.0 ± 1.9
11 22.1 ± 1.8 29.4 ± 1.6
12 23.0 ± 1.6 30.2 ± 1.9
13 23.9 ± 2.0 30.9 ± 1.9
14 24.1 ± 2.1 31.6 ± 2.2
15 24.5 ± 2.4 32.3 ± 2.2
16 25.1 ± 2.4 33.3 ± 2.5

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