小鼠天然组分日粮补锌对生长、繁殖及组织锌含量影响的研究

取２０日龄雄性昆明小鼠１５０只，随机分为５组。取性成熟雌雄昆明小鼠１５０对，也随机分为５组。各组分别喂含Ｚｎ５０ｍｇ／ｋｇ的基础日粮和含Ｚｎ６０、７０、８０、９０ｍｇ／ｋｇ的添加Ｚｎ日粮。生长试验３０ｄ，繁殖试验观察２个胎次。结果表明，日粮Ｚｎ水平对实验小鼠体增重、饲料效率、繁殖力（初生窝仔数、初生窝重、离乳窝仔数、离乳窝重）无显著差异（Ｐ＞００５）。血清、肝脏、胰脏、肾脏、胫骨含Ｚｎ量及血清碱性磷酸酶活性各处理间也无显著差异（Ｐ＞００５）。说明以常规组分配合的天然组分日粮含Ｚｎ量不仅能满足实验小鼠生长和繁殖对Ｚｎ的需要，而且组织Ｚｎ也已达到饱和状态，额外补Ｚｎ没有意义

Study on Infuluence of Supplement Zinc in Natural In gredient Diets on Growth, Reproduction and Tissue Zinc in Mice

150 male Kunming mice at age of 20 days were divided into 5 groups and 150 coupl es Kunming mice in sexul maturity were also divided into 5 groups randomly. The mice in different groups were fed control diet and experimental diets contain di fferent Zine level of 60,70,80 and 90 mg/kg respectively. The results showed that the zinc level in diets have no significant infuluence on weight gain, fee d efficiency and reproductive performance of mice in different groups. There wer e also no significant difference in zinc content in serum, liver, pancreas, kidd ey, tibia and serum AKP in different groups. The results demonstrated that the z inc level in natural ingredient diets can not only satisfy the mice requirement for growth and reproduction, but also make tissue zinc to reach saturation. It i s unnecessary to supplement zinc additive to mice diets.