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The development of sexual behavior in the rat: role of preadult nutrition and environmental conditions.

Artikel i vetenskaplig tidskrift
Författare Stefan Hansen
K Larsson
Sven G. Carlsson
P Sourander
Publicerad i Developmental psychobiology
Volym 11
Nummer/häfte 1
Sidor 51-61
ISSN 0012-1630
Publiceringsår 1978
Publicerad vid Psykologiska institutionen
Sidor 51-61
Språk en
Länkar dx.doi.org/10.1002/dev.420110109
Ämnesord Animals, Animals, Newborn, growth & development, Body Weight, Eating, Environment, Female, Handling (Psychology), Male, Maternal-Fetal Exchange, Pregnancy, Rats, Sexual Behavior, Animal, physiology, Sexual Maturation, Social Isolation
Ämneskategorier Psykologi

Sammanfattning

Rats were subjected to pre- and postnatal undernutrition by restricting the food intake of their mothers (U); another group of rats was normally fed (N). Each nutrition group was divided into 3 subgroups by varying the degree of environmental stimulation: animals in the Max group were stimulated by handling and enriched rearing conditions; the Min group rats were subjected to social isolation; rats in the control condition (C) were raised under ordinary laboratory conditions. The onset of sexual activity was not affected in the U-C male rats, but was delayed in both U-Min and N-Min rats. Although no difference existed in the age of puberty between the N-Max and N-C animals, the U-Max rats displayed an advancement of puberty by 7 days in comparison to the U-C rats. Undernutrition did not affect female sexual maturation; however the Max condition delayed this process in both nutrition groups.

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