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Environmental and dam effects on cannibalism in Wistar rat litters Biological Sciences
Tarôco, Graziela; Gaya, Leila de Genova; Resende, Daniela Regina; Santos, Ivan Carlos dos; Madureira, Ana Paula.
The factors related to cannibalistic behavior of dams in a Wistar rat colony are identified and analyzed. The maternal genetic effects were tested as a random effect by the method of generalized linear models. The season at parturition, the dam´s age at parturition and the density of the room at parturition were tested as fixed effects, whereas the litter size at birth was tested as a co-variable. The genetic effect of the dam was significant for the number of cannibalized pups. Although the season at parturition, the dam´s age and room density on the day of parturition were not individually significant (p > 0.05), most of the interactions between the variation sources were significant (p < 0.05). Cannibalism occurred mostly in dams aged over 241...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Laboratory animals; Maternal behavior; Infanticide; Rodents laboratory animals; Maternal behavior; Infanticide; Rodents.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/23015
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