Weizenbaum F, Kenney N J, Adler N T
Physiol Behav. 1979 Nov;23(5):891-6. doi: 10.1016/0031-9384(79)90197-5.
The patterns of food intake, water intake and body weight of the female rat during the estrous cycle and pregnancy were determined. During the 4-day estrous cycle, intake and body weight were reduced on the day of ovulation. In contrast, animals with 5-day estrous cycles reduced intake and body weight for 2 days, the day prior to ovulation as well as on the day of ovulation. Intake of pregnant rats around the time of birth was compared to that of cycling females and similarities were observed. The peripartum pattern of food intake was systematically related to the length of the gestation period. Rats that littered 22 days after mating showed depressed food intake only on the day of birth. Those with 23-day gestation periods decreased food intake both on the day of birth and on the following day. The similarities in the intake patterns during 4- and 5-day estrous cycle to that of the peripartum segment of 22- and 23-day pregnancies suggest that there may be common neuroendocrine factors controlling these behaviors during the two reproductive periods.
测定了雌性大鼠在发情周期和妊娠期的食物摄入量、饮水量及体重模式。在4天的发情周期中，排卵日的摄入量和体重会降低。相比之下，发情周期为5天的动物摄入量和体重会降低2天，即排卵前一天和排卵当天。将分娩前后妊娠大鼠的摄入量与处于发情周期的雌性大鼠的摄入量进行比较，发现了相似之处。围产期食物摄入模式与妊娠期长短存在系统性关联。交配后22天产仔的大鼠仅在出生当天食物摄入量降低。妊娠期为23天的大鼠在出生当天及次日食物摄入量均降低。4天和5天发情周期的摄入模式与22天和23天妊娠期围产期阶段的摄入模式相似，这表明在这两个生殖时期可能存在共同的神经内分泌因素控制这些行为。
