刚出生的雄性大鼠,随机分为4组,每组14只。用灌胃法分别按每克体重给醋酸铅O、45、90和180mg观察其在生长发育过程中不同阶段的行为功能改变以及与脑铅、血铅的关系。结果发现:1.反射发育:高剂量组新生大鼠翻正反射形成显著延缓;惊吓反应未受影响。2.自然活动:给铅组探索活动早期明显增加,提示铅可改变动物 Newborn male rats were randomly divided into 4 groups of 14. The gavage was given per gram of body weight of lead acetate O, 45,90 and 180mg observed during the growth and development of different stages of behavioral changes and brain lead, blood lead. The results showed that: 1. Reflex development: high-dose group of neonatal normal reflex formation of a significant delay; shock reaction was not affected. 2. Natural Activities: Exploring the lead group significantly increased early activity, suggesting that lead can change animals