Body Weight Information for C57BL/6J (000664)

JAX® Mice Strain - C57BL/6J

Stock Number 000664

000664

Between 400 and 500 mice were obtained at weaning (birthdate +/- 3 days) from three different barrier levels (standard, high, maximum) from both Bar Harbor and Sacramento facilities and weighed the same day each week until 20 weeks of age. No statistical difference was found between groups when data were analyzed either by facility or by barrier level. Mice were fed a diet containing 6% fat (LabDiet® 5K52/5K67) from weaning until 20 weeks of age.

Age (weeks) 3 4 5 6 7 8 9 10 11
Male Mean 9.7 15.7 19.4 21.1 22.9 24.0 25.0 25.6 26.7
  St Dev 1.9 2.2 1.8 1.5 1.5 1.5 1.6 1.7 1.7
Female Mean 9.3 14.1 16.9 17.5 18.2 18.7 19.3 19.8 20.2
  St Dev 1.7 1.8 1.2 1.0 1.1 1.2 1.2 1.3 1.4
Age (weeks) 12 13 14 15 16 17 18 19 20
Male Mean 27.7 28.4 29.1 29.7 30.1 30.7 31.1 31.4 31.8
  St Dev 1.7 1.9 1.9 2.2 2.1 2.2 2.3 2.4 2.5
Female Mean 20.7 21.7 22.0 22.3 22.6 22.6 23.0 23.5 23.6
  St Dev 1.4 1.5 1.6 1.7 1.8 2.0 2.1 2.3 2.3