Dietary Supplementation with Fermented Radix astragalus-ginkgo Leaves Improves Antioxidant Capacity and Meat Quality in Broilers
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利用黑曲霉发酵生产的黄芪银杏叶（FR）产品，比较非发酵物（NF）和发酵物对肉鸡的抗氧化能力和肉品质的影响。将300日龄商品化Arbor Acres（AA）肉鸡随机分为5个日粮处理，包括5个变异：对照组，饲喂基础日粮；NF组，添加3g/kg的NF产物；FR1、FR2和FR3组，分别添加1 g/kg、3 g/kg和6 g/kg的FR产品。不同处理之间的体重增加、采食量和采食量/增重比没有差异。与对照组相比，FR组的腹部脂肪、肌肉脂肪和乳酸（LD）百分比显著降低。当给鸟类提供FR3饲料时，它们的持水能力（WHC）显著提高。42日龄时，FR组血清谷胱甘肽（GSH）和α-生育酚（α-TOH）含量增加，而血清总胆固醇（TC）、丙二醛（MDA）和肝脏活性氧（ROS）水平显著低于对照组或NF组。此外，FR3组鸟类的血清总超氧化物歧化酶（T-SOD）活性比NF组显著升高（42d）。
This study investigated the impacts of Aspergillus niger-fermented Astragalus and Ginkgo biloba product (FR) and its unfermented counterpart (NF) on the antioxidant capacity and meat quality of broilers. Three hundred one-day-old commercial Arbor Acres (AA) broilers were randomly assigned to 5 dietary treatment groups, including five experimental cohorts: the control group fed a basal diet; the NF group fed a basal diet supplemented with 3 g/kg of NF product; and the FR1, FR2, and FR3 groups fed basal diets supplemented with 1 g/kg, 3 g/kg, and 6 g/kg of FR product, respectively. No significant differences were detected in body weight gain, feed intake, and feed intake-to-weight gain ratio among all treatment groups. Compared with the control group, the FR groups showed significantly lower percentages of abdominal fat, intramuscular fat, and lactic acid (LD). When broilers were fed the FR3-supplemented diet, their water holding capacity (WHC) was significantly enhanced. At 42 days of age, the serum levels of glutathione (GSH) and α-tocopherol (α-TOH) in the FR groups were increased, while the serum concentrations of total cholesterol (TC), malondialdehyde (MDA), and hepatic reactive oxygen species (ROS) were significantly lower than those in the control group or NF group. Furthermore, the serum total superoxide dismutase (T-SOD) activity in the FR3 group was significantly higher than that in the NF group at 42 days of age.
