铁与维生素A水平对小鼠胚胎存活的影响  

Effects of Iron and Vitamin A Levels on Embryo Survival in Mice

作　　者：刘光芒[1] 吴德[1] 周安国[1] 王之盛[1] 谭现义[1] 

机构地区：[1]四川农业大学动物营养研究所,四川雅安625014

出　　处：《中国畜牧杂志》2007年第13期18-20,共3页Chinese Journal of Animal Science

基　　金：国家自然科学基金(30471257);四川省教委应用基础研究(2004A009)

摘　　要：试验探讨了铁与维生素A水平对小鼠胚胎存活的影响。选取21日龄昆明种小鼠,饲喂商品日粮2周,随后采用试验饲粮饲喂第11周时,进行交配。此后选有阴栓的小鼠随机分为1个对照组和9个处理组(采用2因素3水平完全随试验设计,铁添加水平为3.5、35、175mg/kg,维生素A水平为400、4000、20000IU/kg),每组分3个重复,每个重复6只。结果表明:妊娠3、6、18d,与对照组相比,35mg/kgFe+4000IU/kg维生素A组胚胎存活率分别提高了25.6%(P<0.05)、9.2%(P<0.05)、46.6%(P<0.05)。适量的铁和维生素A水平有利于胚胎的发育,高铁会降低胚胎的存活率。铁与维生素A对胚胎的存活率的影响存在互作效应(P<0.05)。This experiment was conducted to investigate the effects of various iron and vitamin A levels on embryo survival in mice. The Kunming mice, 21 days old, was fed commercial diet in the first 2 weeks and then experimental diet to the 1 lth week. They were mated and the mice with vagina plug were divided into control group and nine treatments, each of which had 3 repeat of 6 mice of per repeat （according to complete random factorial experimental, the nine treatments diets＇iron was accessioned on 3.5, 35, 175 mg/kg, while vitamin A on 400, 4 000, 20 000 IU/kg, respectively）. Results were showed as follows： Compared to control group, the 3, 6, 18 days＇ embryo survival rate of 35 mg/kg Fe＋4 000 IU/kg VA was 25.6%（P 〈 0.05）,9.2% （P 〈 0.05）,46.6% （P 〈0.05）increase, respectively. Our data suggested the optimum iron and vitamin A levels facilitated embryo survival. However, embryo survival was decreased when the mice were given higher iron level. The embryo survival rate was significantly affected by iron and vitamin A interactions（P 〈 0.05）.

关 键 词：铁 维生素A 胚胎存活 小鼠 

分 类 号：S865.130.4[农业科学—野生动物驯养]