Breeding of Mice & Rats

Charles River provides a full-service rodent colony management program to deliver animals to you when you need them, in the exact quantities you specify, and with the health status that you require.

Our expert staff will work with you to:

  • Develop and execute mouse or rat breeding plans
  • Troubleshoot issues
  • Deliver cohorts of study animals

In addition to providing breeding services, we can help streamline your technicians' workloads while capturing real-time data electronically on each animal. Our Internet Colony Management (ICM™) system complements our breeding services, comprehensively supporting your colonies.


Service Requirements Deliverables Estimated Timeline

Quarantine Services


  • Rapid: Direct animal and environmental samples tested via Mouse Surveillance Plus PRIA™
  • Standard: Sentinel (immunocompetent and immunodeficient) tested via HM Standard with Helicobacter PCR
  • Rapid: 2 weeks
  • Standard: 12 weeks

Production Breeding & Animal Holding

Hold, breed, age and ship your animals


  • Variable based on client needs
  • Husbandry, mating, weaning and dedicated project manager supported by Client Portfolio Manager


In Vitro Fertilization (IVF) Colony Expansion

Cut time off your breeding timeline

2-3 homo- or heterozygous males between 12 weeks and 6 months old*
* Mice only

VAF/Elite® mice quantity is based on parameters of the project

15 weeks

MAX-BAX® Speed Congenics

Get a backcrossed colony in half the time

2-3 homo- or heterozygous males between 12 weeks and 6 months old

All fully congenic mice produced

15 months

Colony Startup Package

Get an established colony quickly

2-3 homo- or heterozygous males between 12 weeks and 6 months old

  • Background strain characterization
  • of 3 mice
  • Sperm cryopreservation
  • Rederivation
  • 24 heterozygous mouse pairs
  • PCR genotyping


Mouse Rescue Package

Recovery of a mouse line that is no longer producing offspring

  • All animals produced
  • Complete health report
  • VAF/Elite® mice

15 weeks