Differences in pup birth weight, pup variability within litters, and dam weight of mice selected for alternative criteria to increase litter size.

Abstract excerpt

Selection for litter size had been practiced for 21 generations and relaxed selection for 13 generations in mice. Three replicates were used with four selection criteria: index of components (ovulation rate and ova success), uterine capacity, litter size, and an unselected control. Especially with selection for litter size and the index relative to the control, number of pups born had increased, and differences...

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