hrp0084p2-390 | Fat | ESPE2015

Programming of Rat Behaviours and the Stress Response by Duration of the Infancy Stage

Crispel Yonatan , Katz Oren , Hochberg Ze'ev

Background: The age at weaning programs life history adaptively. Shorter infancy resulted in longer/thinner animals with a reproductive-strategic shift to earlier physical and sexual development (BMC Med, 2013).Hypotheses: The length of infancy impacts also the stress-response and has behavioural consequences.Method: Sprague-Dawley pups (generation F1), which usually are weaned at age 21 days, were weaned by cross-fostering at age ...