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. 2022 Feb;72(1):14–21. doi: 10.30802/AALAS-CM-21-000063

Table 2.

Number of hypomorphic mice produced and weaned.

Hypomorphic Mice Data N Survival Rate %
Produced 480
Weaned 226 47.1%
Females 118 52.2%
Males 103 45.6%
Sex not recorded 5 2.2%
Weaned/produced N/n
Year 1 (14 mo) 67 of132 50.8%
Year 2 (16 mo) 47 of 93 50.5%
Year 3 (13 mo) 112 of 255 43.9%
Mean survival rate per year 48.4%
Mean (SD) Range
Breeding cages per cycle 8.0 ± 4.4 3-17
Hypomorphs weaned per cycle 6.5 ± 4.5 1-17
Average hypomorphs per breeder 0.9 ± 0.5

Time period 8/2016-2/2020. Duration 42.6 mo (3.6 y). Survival rate is calculated as total number of animals weaned over total animals produced (47.1%) and the mean survival rate per year (48.4%) are comparable to the average survival rate per breeding round (50%- see Figure 1). Cycle refers to breeding round.