摘要
选用540只27周龄海兰褐蛋鸡,随机分为4个处理,每个处理5个重复,每个重复27只鸡。采用单因素完全随机分组设计,对照组饲喂基础日粮,试验组饲喂在基础日粮中分别添加100、200、300mg/kg黄芪多糖的日粮,试验期为70d,探讨日粮中添加不同水平的黄芪多糖对蛋鸡机体抗氧化能力和鸡蛋品质的影响。结果显示:黄芪多糖能不同程度地提高(P<0.05)血清和蛋黄SOD、血清GSH-Px和T-AOC活性,显著降低(P<0.05)血清和蛋黄MDA含量、蛋黄胆固醇质量浓度。随着受试时间的延长,各组内血清SOD活性显著升高(P<0.05),血清MDA含量和T-AOC活性显著降低(P<0.05);对照组的蛋黄MDA含量显著升高(P<0.05),而血清GSH-Px活性显著降低(P<0.05)。结果表明,黄芪多糖能改善蛋鸡机体及其产品抗氧化能力,对蛋黄胆固醇质量浓度有降低作用。
The experment was conducted to study the effects of different levels of astragalus polysaccharides APS on antioxidant status and egg quality of laying hens. Five hundred and forty 27-week-old Hy-Line Brown hens were randomly divided into 4 treatments with 5 replicates,and each replicate contained 27 hens. Dietary treatments included a control group fed the based diet without APS and three other groups fed with 100,200 and 300 mg/kg APS in diets, respectively. The experiment lasted for 70 days. The results showed that supplementation of APS significantly increased （P〈0. 05） the activities of serum SOD,GSH-Px and T-AOC but reduced （P〈0. 05） the concentrations of serum and eggyolk MDA,and eggyolk cholesterol. Compared with the 35th day, serum SOD activities significantly increased （P〈0.05）, but serum T-AOC activities and MDA concentrations significantly reduced in all groups at the 70th day. Compared with the 35th day, eggyolk MDA concentration of control group was significantly increased （P〈0.05） whereas serum GSH-Px was significantly decreased （P〈0.05） at the 70th day. These results indicated that the supplementation of APS could increase the antioxidant ability and decrease eggyolk cholesterol of laying hens.
出处
《中国兽医学报》
CAS
CSCD
北大核心
2012年第1期130-134,共5页
Chinese Journal of Veterinary Science
关键词
黄芪多糖
蛋鸡
抗氧化能力
鸡蛋品质
astragalus polysaecharides
laying hens
antioxidant status
egg quality
