Whether rats were fed ad lib or not, groups A and C showed a lower FER than group B. In group A, low lipid and low protein diet produced a significant reduction in the hemoglobin level regardless of male and female rats.

• 不同营养素配比的饲料无论足量或限量喂养 ,A、C组的FER均低于B组。 雌、雄大鼠A组的血红蛋白值始终低于B、C组 ,差异有显著意义。