Schreiber R A, Ferrett L K, Holbert D
Lab Anim Sci. 1975 Oct;25(5):602-8.
Data on the reproductive behavior of DBA/2J Ten mice, collected from October 1970 through March 1973 and utilizing a 2-female, 1-male breeding system, with the mice remaining together throughout their reproductive life indicates: a) Litter size tends to increase through the fourth litter, the first litter being much smaller than successive litters; b) Survival rates of litters with 2--4 pups increase with successive deliveries; c) Survival rates of litters with 5--9 pups are approximately the same regardless of parity; d) There is a circannual rhythm in the number of pups available for weaning da 21, which is attributable to changes in postnatal viability. Data collected using a breeding pen system, with isolation of females pre- and post-delivery (March 1973 to March 1974) indicates: a) There is a reduction in live litter sizes in later litters with this system; b) There is a large reduction in the proportion of pups surviving to weaning with this system when compared with the other breeding system.
1970年10月至1973年3月收集的关于DBA/2J品系小鼠繁殖行为的数据，采用2雌1雄的繁殖系统，小鼠在整个繁殖期都生活在一起，结果表明：a) 产仔数在第四窝之前趋于增加，第一窝比后续几窝小得多；b) 2 - 4只幼崽的窝仔存活率随连续分娩次数增加；c) 5 - 9只幼崽的窝仔存活率无论胎次如何大致相同；d) 可在21日龄断奶的幼崽数量存在年度节律，这归因于出生后存活率的变化。1973年3月至1974年3月采用繁殖笼系统收集的数据，该系统在分娩前后将雌性隔离，结果表明：a) 使用该系统后期产仔的活产仔数减少；b) 与另一种繁殖系统相比，使用该系统幼崽存活至断奶的比例大幅降低。
