Placentophagia in weanling female laboratory rats.
Placentophagia in weanling female laboratory rats.
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DOI：
10.1002/dev.21208
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发表时间：
2014-09
影响因子：
2.2
通讯作者：
Lonstein, Joseph S.
中科院分区：
文献类型：
--
作者：
Harding, Kaitlyn M.;Lonstein, Joseph S.
食胎盘在哺乳期哺乳动物中很常见，并为母亲提供了生理和行为上的优势。在自然环境中，幼崽出生时通常会出现断奶现象，但目前尚不清楚断奶大鼠是噬胎盘还是更喜欢胎盘而不是其他物质。为了检验这一点，在产后发情期间，将初产大鼠留在母鼠窝里，而在母鼠下一次分娩时，将断奶的母鼠留在母鼠窝里。持续观察发现58%的断奶仔猪为噬胎盘动物。为了确定这种食胎盘行为是否发生在母体之外，研究人员将胎盘、肝脏或蛋糕糖霜放在一个新的房间里，供仍生活在其出生巢穴中的断奶雌性食用。它们摄入的胎盘和肝脏比糖霜多。因此，许多断奶的雌性实验室大鼠在其年幼的兄弟姐妹出生时是噬胎盘的，但在其出生巢外进行测试时却不会选择性地选择胎盘。断奶时噬胎盘的后果尚不清楚，但它可能会促进他们的异位育儿或产后育儿。
Placentophagia is common in parturient mammals and offers physiological and behavioral advantages for mothers. In natural environments, weanlings are often present during the birth of younger siblings, but it is unknown if weanling rats are placentophagic or prefer placenta over other substances. To examine this, primiparous rats were remated during the postpartum estrus and weanling females remained in the nest during their mother’s next parturition. Continuous observation revealed that 58% of weanlings were placentophagic. To determine if this placentophagia occurs away from parturient mothers, weanling females still living in their natal nest were offered placenta, liver, or cake frosting in a novel chamber. They ingested more placenta and liver than frosting. Thus, many weanling female laboratory rats are placentophagic during birth of younger siblings but do not selectively prefer placenta when tested outside their natal nest. Consequences of placentophagia by weanlings are unknown, but it may promote their alloparenting or postpartum mothering.
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DOI：
10.1002/tera.1420410403
发表时间：
1990-04-01
期刊：
TERATOLOGY
影响因子：
--
作者：
JOLLIE, WP
通讯作者：
JOLLIE, WP
影响因子：
2.9
作者：
BRIDGES, RS
通讯作者：
BRIDGES, RS
影响因子：
2.9
作者：
GILBERT, AN;BURGOON, DA;ADLER, NT
通讯作者：
ADLER, NT
影响因子：
2.2
作者：
Gregg, Jennifer K.;Wynne-Edwards, Katherine E.
通讯作者：
Wynne-Edwards, Katherine E.
影响因子：
8.2
作者：
Andersen, SL
通讯作者：
Andersen, SL