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

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 o...

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Veröffentlicht in:	Developmental psychobiology 1998-03, Vol.32 (2), p.131-136
Hauptverfasser:	Mayer, Anne D., Rosenblatt, Jay S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Circadian Rhythm - physiology Estrus - physiology Female Labor, Obstetric - physiology laboratory rat litter size Male Maternal Behavior - physiology parturition Photoperiod photoperiod shift postpartum estrus Pregnancy Pregnancy, Animal - physiology Psychophysiology Rats Rats, Sprague-Dawley Time Factors
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