PAIR FEEDING BETWEEN NORMAL AND EXPERIMENTAL PROGENY FROM MOTHER RATS DURING GESTATION AND LACTATION

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In earlier study from this laboratory, when fed Commercial Laboratory Chow, less feed efficiency in the progeny of underfed mothers during gestation and lactation was reported accompanying with the high nitrogen level in both the urine and the feces. Using the formulated diet with egg albumin, we have undertaken to measure feed efficiency and the pair feeding between normal and restricted progeny. Although we failed to find any significant difference in feed efficiency between the two groups, the pair feeding revealed the retarded growth in restricted progeny during a pair feeding experiment period, suggesting the presence of some abnormality involved in metabolism, particularly protein metabolism, in restricted progeny even when fed diet containing egg albumin.