本试验选择体重60公斤左右、出生日期相近的北京黑猪72头(阉公猪和母猪各半,分为4组)。Ⅰ组和Ⅱ组饲喂蛋白含量14％的饲料:Ⅲ组和Ⅳ组饲喂蛋白含量16％的饲料。Ⅰ组和Ⅲ组每天注射1ml 75mM NaHCO_3为对照组;Ⅱ组和Ⅳ组每天注射基因工程猪生长激崇1ml(含2 mg)。注射28天后采血测定其血浆中HDL,VLDL,游离脂肪酸,葡萄 In this experiment, 72 Beijing black pigs with a body weight of about 60 kilograms and a similar birth date were selected (half boars and sows were divided into 4 groups). The groups I and II were fed a feed with a protein content of 14%: the groups III and IV were fed a feed with a protein content of 16%. Groups I and III received 1 ml of 75 mM NaHCO 3 per day as the control group; Groups II and IV received daily injections of genetically engineered pigs with 1 ml (including 2 mg). After 28 days of injection, blood was collected to determine plasma HDL, VLDL, free fatty acids, and grapes.