PMID: 9526688Apr 4, 1998Paper

A method for regulating the duration of pregnancy and the time of parturition in Sprague-Dawley rats (Charles River CD strain)

Developmental Psychobiology
A D Mayer, J S Rosenblatt

Abstract

A method of shifting the dark phase of the 12/12 hr photoperiod cycle on Day 7 of pregnancy is described for regulating the duration of pregnancy to 22 days and assuring that most parturitions take place between 1100 and 1500 hr. This method, in addition, has the added convenience that matings can occur during normal laboratory hours between 0700 and 1900 hr during the dark phase of the photoperiodic cycle. Litter sizes are normal (mostly 14-16 pups) and postpartum estrus behavior occurs at the normal interval of 4 to 11 1/2 hr after parturition.

References

Apr 29, 1976·Nature·D W Lincoln, D G Porter
Jun 1, 1985·Pharmacology, Biochemistry, and Behavior·A D MayerJ S Rosenblatt
Jun 1, 1974·Journal of Reproduction and Fertility·M DukesP Atkinson
Sep 1, 1970·Endocrinology·J A Mitchell, J M Yochim
Oct 23, 1995·Brain Research·M C Del CerroB R Komisaruk

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Citations

Dec 14, 2002·Pharmacology, Biochemistry, and Behavior·D A LubinJ M Johns
Aug 22, 2001·Progress in Neuro-psychopharmacology & Biological Psychiatry·D A LubinJ M Johns
Jan 20, 2006·Behavioral Neuroscience·Josephine M JohnsCheryl H Walker
Jul 19, 2013·PloS One·Ashley RumpleIpek Oguz
Dec 3, 2014·Neurotoxicology and Teratology·Matthew S McMurrayJosephine M Johns
Aug 19, 2007·Neurotoxicology and Teratology·Josephine M JohnsCheryl H Walker
Feb 9, 2012·Journal of Neuroendocrinology·S K WilliamsJ M Johns
Sep 24, 2004·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·Josephine M JohnsMatthew McMurray
Oct 19, 2010·Hormones and Behavior·Graciela Elena Carrillo-MartínezOscar González-Flores

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