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Significance of interstrain differences of fertility (litter size and number of litters per breeding pair)
| No. of litters per breeding pair | ||||||
| DBA/2J | C57BL/6J | D2-CF/3 | B6-CF/3 | CF/1 | CF/3 | |
| DBA/2J | ns | ns | ns | *** | *** | |
| C57BL/6J | ns | ns | ** | *** | *** | |
| D2-CF/3 | ns | ** | ns | *** | *** | |
| B6-CF/3 | ns | ns | ns | ns | * | |
| CF/1 | ns | *** | * | ns | ns | |
| CF/3 | * | ns | *** | ns | ** | |
| Litter size | ||||||
*, P < 0.05; **, P < 0.01; ***, P < 0.001; ns, not significant
