年平均胎仔数无显著差异。
There was no significant difference in mean litter size of years.
研究大鼠的生殖能力和早期的胚胎发育以及大鼠和兔子的胚胎-胎仔发育。
Fertility and early embryonic development have been investigated in rats and embryo-fetal development has been investigated in rats and rabbits.
目的制作兔胎仔腹裂模型，探讨肠管病理损害机制和有关胎仔实验外科的技术。
Objective the model of gastroschisis was developed in fetal rabbits, to explore the mechanism of histopathological changes of the bowel and experimental technique of fetal surgery.
在电厂下风侧居民区内收集大气悬浮微粒，经二氯甲烷提取，浓缩制成受试物，给孕鼠腹腔注射不同剂量，观察对小鼠胚胎及胎仔发育的影响。
Fallout particulates from ambient air were collected in an leeward residential area of a power plant. Then, were extracted with dichloromethane, concentrated and redisolved in olive oil.
一胎多仔的动物一次生的后代。
猫有时一胎产四、五只幼仔。
哺乳期的日粮组成及妊娠期的饲喂水平对下一胎产活仔、死胎数均没有影响。
The number of live born and stillborn piglets was not affected by feed composition during lactation or by feeding level during gestation.
哺乳期的日粮组成及妊娠期的饲喂水平对下一胎产活仔、死胎数均没有影响。
The number of live born and stillborn piglets was not affected by feed composition during lactation or by feeding level during gestation.
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