?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Induction+of+maternal+behavior+in+rats%3A+Effects+of+pseudopregnancy+termination+and+placenta-smeared+pups&rft.creator=Steuer%2C+M.+A.&rft.creator=Thompson%2C+A.+C.&rft.creator=Doerr%2C+J.+C.&rft.creator=Youakim%2C+M.&rft.creator=Kristal%2C+M.+B.&rft.subject=Behavioral+Neuroscience&rft.subject=Animal+Behavior&rft.subject=Behavioral+Biology&rft.subject=Comparative+Psychology&rft.subject=Neurochemistry&rft.subject=Neuroendocrinology&rft.subject=Physiological+Psychology&rft.subject=Psychobiology&rft.description=The+onset+of+maternal+behavior+in+Long-Evans+rats+was+examined+after+pseudopregnancy+(PsP)+termination%2C+both+with+and+without+exogenous+estrogen+administration%2C+and+in+response+to+either+clean+or+placenta-smeared+stimulus+pups.+Natural+(spontaneous)+PsP+termination+was+as+effective+in+hastening+the+onset+of+maternal+behavior+as+ovariectomy+plus+estrogen+injection.+If+clean+foster+pups+were+presented+as+soon+as+pseudopregnancy+terminated+(first+proestrus+or+cornified+smear)%2C+maternal+behavior+was+exhibited+within+2+days%3B+placenta-smeared+foster+pups+presented+at+the+same+time+elicited+maternal+behavior+within+2+hr.+The+combination+of+initiating+maternal-+behavior+testing+immediately+after+the+natural+termination+of+pseudopregnancy+and+proffering+placenta-smeared+pups+apparently+simulates+the+hormonal+milieu+as+well+as+the+environmental+cues+present+at+parturition%2C+noninvasively%2C+producing+optimal+conditions+for+the+rapid+induction+of+maternal+behavior.&rft.date=1987&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F71%2F1%2Fpsp.htm&rft.identifier=++Steuer%2C+M.+A.+and+Thompson%2C+A.+C.+and+Doerr%2C+J.+C.+and+Youakim%2C+M.+and+Kristal%2C+M.+B.++(1987)+Induction+of+maternal+behavior+in+rats%3A+Effects+of+pseudopregnancy+termination+and+placenta-smeared+pups.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F71%2F