Table 1.

Breeding results from 9 different types of mating.

Mating (F × M)	n	Litter size at
		Birth	Weaning
+/+ × +/+	7	6.9 ± 0.6	6.6 ± 0.7
+/+ ×  +/−	7	7.1 ± 0.6	6.7 ± 0.5
+/+ × −/−	6	6.2 ± 1.1	5.7 ± 0.8
+/− × +/+	3	6.0 ± 1.5	5.7 ± 1.5
+/− × +/−	7	7.7 ± 0.3	7.4 ± 0.2
+/− × −/−	6	6.5 ± 0.8	6.3 ± 0.9
−/− × +/+	3	7.3 ± 1.5	7.3 ± 1.5
−/− × +/−	6	6.0 ± 0.9	5.7 ± 1.0
−/− × −/−	8	7.4 ± 0.8	7.0 ± 0.8