A. Heterozygote breeding analysis in Lc3 synthase knockout mice* | |||
---|---|---|---|
Outcome of Breeding | Conventional Knockout | Cre-loxP Knockout | |
Number of delivered offspring | 230 | 249 | |
Number of surviving mice (survival rate) | 135 (59%)† | 221 (89%)† | |
Number of breeding pairs | 18 | 5 | |
Breeding time (months) | 6 | 5.8 | |
Number of litters | 42 | 33 | |
Average litter #/breeding pair | 2.3 | 6.6 | |
Average # of pups/litter (av # surviving/litter) | 4.7 (3) | 7.5 (6.7) | |
B. Homozygote breeding analysis of Lc3 synthase knockout mice | |||
Outcome of Breeding | Conventional Knockout | Cre-loxP Knockout | |
Number of offspring | 33 | 21 | |
Number surviving (survival rate) | 3 (9.0%) | 12 (57%) | |
Number of breeding pairs | 6 | 4 | |
Breeding time (months) | 5 | 5 | |
Number pregnant** | 9 | 7 | |
Average # pregnancies/breeding pair | 1.5 | 1.75 | |
Average #pups/pregnancy (av # surviving/pregnancy) | 3.7 (0.3) | 3 (1.7) | |
C. Embryo experiments on Lc3 synthase knockout mice | |||
Group | Number of Breeding Pairs | Number Pregnant | Average Number of Fetuses per Pregnancy †† |
Conventional | 26 | 13 | 6.78 ± 2.42 |
Cre-loxP | 3 | 2 | 7.00 ± 0.00 |