Abstract: According to the criterions of our country and those concerned references,a new composition of granulated feed for feeding CXA-1 mice was designed and used in our department. The granules of this feed measured 12mm in diameter and contained crude protein, fat, thick fibre. calcium and phosphorus of 20.5%, 9.2%, 5%, 1.35% and 0.8% in their given order. The contents of the other nutrient component in the feed all were within the standard limits. The feeding results for 7 years showed the pregancy rate, breed numbres per litter and survival rate after weaning of the animals fed with the feed exceeded those of the same animals fed with the other composition feed which was used previously in our department. The results suggested that this granulated feed basically satisfy the demand for culture of CXA-1 r-inbred mice and come up the level of full value nutrition.

Key words: CXA-1 strain mice granulated feed breed full value nutirtion

摘要： 根据国家标准和有关文献，作者设计了饲喂CXA－1系小鼠的颗粒饲料（蚌医新配方），颗粒料直径12mm，饲料中粗蛋白质、脂肪、粗纤维、钙、磷含量分别为20.5％、9.2％、5％、1.35％、0.83％。其它营养成份含量均在标准范围内。饲喂结果表明，其受孕率、窝产仔数、离乳存活率等标准超过（蚌医旧配方）。经7年育种饲喂，能满足培育新品系小鼠饲养繁殖的需要，已基本得到全价营养的要求。

关键词: CXA-1系小鼠, 颗粒饲料, 繁育, 全价营养