Figure 1.

Percentages of pups successfully weaned after the addition of fostered pups to existing litters. Percentages of fostered pups weaned as compared with the number of pups fostered and percentages of birth pups weaned as compared with the number of birth pups at time of weaning are depicted. Statistical significance between successful weaning of fostered pups was present between experimental (Exp) group 2 (pups that were younger than 48 h were transferred to a dam with a litter that was 10 to 12 d old) and multiple treatment groups. No statistically significant differences were noted between treatment groups with regard to birth litter. Data are presented in the graph as mean ± SEM. *, P < 0.05.