The 8%, 12%, 16%, and 20% of perilla frutescens were added to laying hens diet. The content of polyunsaturated fatty acid (PUFA) and their ratios in eggs yolk were analysed.

• 在蛋鸡日粮中分别加入 8%25 ,12%25 ,16%25 ,2 0%25紫苏 ,研究蛋黄多不饱和脂肪酸 (PUFA)含量及其比例变化 ,分析其脂质代谢。