在大鼠发育过程中，饲养于大窝中的影响的变异性。

Variability of the effects of rearing in a large litter on the development of the rat.

作者信息

Galler J R, Turkewitz G

出版信息

Dev Psychobiol. 1975 Jul;8(4):325-31. doi: 10.1002/dev.420080406.

DOI:10.1002/dev.420080406

Abstract

The variability in the effects of rearing rats in large litters was examined. Subjects reared in litters of 16 were stunted and delayed in the appearance of eye-opening and fur-eruption as compared with pups reared in litters of 8. However, the effects of the large-litter treatment were not uniform; pups in this group exhibited markedly higher variability with regard to all measures than did pups from small litters. In fact, some pups from the large litters were heavier and some exhibited developmental landmarks earlier than did most pups reared in small litters.

摘要

研究了在大窝中饲养大鼠所产生影响的变异性。与在8只幼崽的窝中饲养的幼崽相比，在16只幼崽的窝中饲养的实验对象发育迟缓，睁眼和长毛出现的时间延迟。然而，大窝饲养处理的影响并不一致；与小窝中的幼崽相比，该组幼崽在所有测量指标上表现出明显更高的变异性。事实上，一些来自大窝的幼崽比大多数在小窝中饲养的幼崽更重，并且一些发育里程碑出现得更早。