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Pup age and aggressive behavior in lactating rats 56
Giovenardi,M.; Consiglio,A.R.; Barros,H.M.T.; Lucion,A.B..
High levels of aggressive behaviors against intruders in the nest area are displayed by female rats during the first 10 days after delivery, declining thereafter to very low levels, even though lactation continues. Cross-fostering experiments were undertaken to test the hypothesis that pup age may affect aggression in lactating rats. The behavior of females on the 8th day after delivery when raising fostered 8-day-old pups was compared to that of females on the 8th postpartum day raising older pups (18 days old) for the last 5 days, and females on the 18th day after delivery raising fostered 18-day-old pups were compared to females in the same postpartum period nursing younger pups (8 days of age at the time of the maternal aggression test) for 5 days. Pup...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Maternal aggression; Mother-infant interaction; Cross-fostering; Prolactin.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000900015
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