本试验旨在探讨饲粮中不同水平浒苔对蛋鸡蛋黄品质、抗氧化能力和血清生化指标的影响。试验选取80只330日龄健康商品代海蓝褐壳蛋鸡，随机分成4组，每组5个重复，每重复4只。4个组的饲粮中浒苔添加水平分别为0（对照组）、2.0%（Ⅰ组）、3.0%（Ⅱ组）、4.0%（Ⅲ组），试验期为49 d。结果表明，与对照组相比，Ⅲ组蛋黄色度（P<0.05）、磷脂（P<0.05）、粗蛋白质（P<0.05）、铁（P<0.01）、碘（P<0.01）含量显著提高；血清钾（P<0.01）、总蛋白（P<0.01）、白蛋白（P<0.01）含量显著提高，血清超氧化物歧化酶的活性显著提高（P<0.05）；蛋黄中胆固醇含量显著降低（P<0.01），血清胆固醇（P<0.05）、甘油三酯（P<0.05）含量和谷丙转氨酶的活性（P<0.01）显著降低。因此，浒苔可增强蛋鸡蛋黄品质和抗氧化能力，改善机体的脂质、矿物质代谢和蛋白质的合成。生产中适宜添加量建议为4%。

This experiment was conducted to investigate the effects of Enteromorpha prolifera on yolk quality, antioxidant ability and serum biochemical indices of laying hens. Eighty healthy 330-day-old laying hens were randomly divided into 4 groups, and every group had 5 replicates with 4 layers each. Enteromorpha prolifera levels in the diets of four groups were 0 (control group), 2% (group Ⅰ), 3%(group Ⅱ), 4%(group Ⅲ), respectively. The experiment lasted for 49 days. The results showed as follows: compared with the control group, 4% Enteromorpha prolifera could significantly increase the yolk color (P<0.05), phospholipids (P<0.05), crude protein (P<0.05), ferrum (P<0.01)and iodine (P<0.01) contents in yolk, and the contents of potassium (P<0.01), total protein (P<0.01) and albumin(P<0.01) in serum, enhance the superoxide dismutase activity in serum (P<0.05), decrease the content of cholesterol (P<0.01) in yolk, total cholesterol (P<0.05) and triglycercide (P<0.05) in serum, and the glutamic-pyruvic transaminase activity (P<0.01) in serum. In conclusion, Enteromorpha prolifera can enhance the yolk quality and antioxidant ability, improve the minerals, lipid and protein metabolism of laying hens. It can be appropriate used with a level of 4% in production.［Chinese Journal of Animal Nutrition，2011，23（3）：452-458］