实验选用17日龄 SD 大鼠,随机分为3组,一组自由进食低锌饲料(含锌0.5μg/g),对照一组自由进食含足量锌的饲料(含锌25μg/g),对照二组给予含足量锌的饲料(含锌25μg/g),但严格控制进食量使之与低锌饲料组相同。3组动物在饲养14d 后断头处死,实验结果表明,低锌饲料组大鼠睾丸的谷氨酰胺合成酶活性较 Seventeen-day-old Sprague-Dawley rats were randomly divided into three groups. One group was fed with low zinc diet (containing 0.5μg / g zinc), the other group was fed with zinc diet (zinc 25μg / g) The control two groups were given zinc diet (zinc 25μg / g), but the amount of food strictly controlled was the same as the low zinc diet group. Three groups of animals were sacrificed 14 days after feeding, the experimental results show that the low zinc diet rats testicular glutamine synthetase activity than