泌乳による着床遅延が乳飲みマウスの生時体重および成長に及ぼす影響について

概要

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This experiment were designed to determine if the greater birth weight and growth could be obtained by the delayed implantation in the suckling mice. Mice used were ICR mature virgin females at 6 weeks old. They were maintained on our laboratory, fed and water ad libitum, and kept in an environment maintained at 20±1℃ with 12 hr. of artificial light daily. Mouse mated at the post-partum estrus, each of them nursing 6 young, were allocated to two groups, 20 days p. c. (Group III) and 8 days p.c. (Group IV) in the term of the suckling period. The lengths of gestation in delayed implantation groups were longer than that in normal groups. The birth weights were 1. 83 and 1. 56g in delayed mice and normal mice, and the weaning weight were 13.6 and 10. 4g in delayed mice and normal mice. These results showed the birth weight and the growth in delayed implantation groups were greater than those in normal implantation groups.
信州大学農学部の論文
1983-07-25