Rats in the high-energy diet group were fed with high-energy food (00 g of food containing g of egg,0 g of sugar,0 g of高能量饮食组:高能量饲料膳食(每00g基础饲料中加入鸡蛋g,食糖0g,猪油0g,浓鱼肝油0滴)。