This study was conducted to research the effect of overfeeding on antioxidant capacity of serum, liver, gut, and breast muscle in Gang Goose and Tianfu Meat Goose. Fifty-five Gang Geese and 55 Tianfu Meat Geese were separated respectively into a control group and an overfed group randomly (15 birds in control group, 40 birds in overfed group); all birds were slaughtered after overfeeding for 3 wk. After overfeeding, the concentration of triglyceride, insulin, and glucose increased in serum (P < 0.05), the liver weight and fat content in liver increased, and the moisture content in liver decreased (P < 0.05) in both breeds. The liver weight, ratio of liver to body, and fat content in liver of Tianfu Meat Goose were higher than those of Gang Goose (P < 0.05). Overfeeding had no significant effect on the meat quality of breast muscle (P > 0.05). The activities of total glutathione peroxidase (TGP), superoxide dismutase, and catalase (CAT) in serum of the control group were higher than those in the overfed group (P < 0.05); the activities of total glutathione peroxidase, CAT, and the total antioxidant capacity in liver of the control group were higher than those in the overfed group (P < 0.05); there was no significant difference between the overfed group and the control group in the malonyldialdehyde (MAD) content of liver and serum (P > 0.05). The malonyldialdehyde content of intestine in the overfed group was higher than that in the control group (P < 0.05). In conclusion, the oxidative stress occurred in the serum, liver, and intestine after overfeeding.

本研究旨在研究过量饲喂对鹅鹅和天府肉鹅血清，肝，肠和胸肌抗氧化能力的影响。将55只雁鹅和55只天府肉鹅随机分为对照组和超喂组（对照组15只，超喂组40只）。喂饱3周后将所有家禽宰杀。超喂后， 两个品种的血清中甘油三酸酯，胰岛素和葡萄糖的浓度均升高（P  <0.05），肝脏的肝脏重量和脂肪含量增加，肝脏的水分含量降低（P <0.05）。天府肉鹅的肝脏重量，肝体比和肝脏中的脂肪含量高于刚鹅（P <0.05）。过量喂养对胸肌的肉品质没有显着影响（P  > 0.05）。对照组血清总谷胱甘肽过氧化物酶（TGP），超氧化物歧化酶和过氧化氢酶（CAT）的活性高于过量喂养组（P  <0.05）; 对照组肝脏总谷胱甘肽过氧化物酶，CAT活性和总抗氧化能力均高于过量喂养组（P  <0.05）；过量组与对照组肝脏和血清中丙二醛（MAD）含量差异无统计学意义（P> 0.05 ）。 > 0.05）。过量喂养组的肠中丙二酰二醛含量高于对照组（P  <0.05）。总之，过量喂养后，血清，肝脏和肠道中发生了氧化应激。