I wish to maintain my breeding colonies.  Should I curtail the number of animals/cages down to the minimum number to maintain each line/strain? 

By virtue of the research curtailment directive, breeding of animals are permitted for experiments are defined as essential and approved through the process being developed, or to maintain a breeding line.  Options to cryopreserve mouse lines are available and the DLAR may be contacted for consultation and assistance. Genotyping services by Transnetyx® will still be available for offspring.