复合抗氧化剂对蛋鸡抗氧化、生产性能和鸡蛋抗氧化力的影响

本文旨在研究复合抗氧化剂对蛋鸡生产性能、蛋品质和蛋黄抗氧化力的影响。实验统用39周龄海蓝灰蛋鸡共计180羽,将蛋鸡随机进行分组,共分4组,设3个重复,每个重复15羽。对照组饲喂基础日粮,试验组(1、2、3组)分别在基础日粮基础上添加5.0、7.5及10.0g/kg的复合抗氧化剂。试验周期为63d,预试期7d,正试期56d。结果表明,与对照组相比,添加7.5和10.0g/kg复合抗氧化剂产蛋率提高7.29%,哈氏单位、蛋壳厚度显著提高(P0.05)。添加5.0~10.0g/kg复合抗氧化剂对采食量和蛋重产蛋率、料蛋比、蛋黄颜色、蛋形指数无显著的影响(P0.05);添加复合抗氧化剂的试验组均能显著提高血清的超氧化物歧化酶、谷胱甘肽过氧化物酶和总抗氧化能力的活性(P0.05),降低了血清丙二醛(MDA)含量(P0.01);试验28d起,添加复合抗氧化剂极显著提高蛋黄T-AOC、降低MDA含量(P0.01);添加10.0g/kg复合抗氧化剂蛋黄T-AOC提高了137%~168%,MDA下降99.27%~166.97%。由此可知,复合抗氧化剂能够提高蛋鸡的抗氧化能力、产蛋率和哈氏单位,添加10.0g/kg复合抗氧化剂可显著提高鸡蛋的抗氧化力。

Impact of Multiple Antioxidants on Antioxidant Capacity and Production Performance of Laying Hens

This research is aimed to study the impact of multiple antioxidants on the production performance of laying hens,egg quality and the antioxidant capacity of yolk.The 180 sea-blue-gray-hens aged 39 weeks were randomly divided into four groups,and each group had three replicates for 15 hens.The hens of test-group 1 (T1),test-group 2 (T2)and test-group 3 (T3)were fed with basal diet added 5.0,7.5 and 10.0 g/kg composite antioxidants respectively,and the control-group was fed with basal diet only.The whole experiment lasted for 63 days including 7-days-pre-trial-stage and 56-days-test-stage.The results showed that:compared with the control group,the egg production rate of T1 and T3 were increasing 7.29%,Haugh units,eggshell thickness were significantly different (P<0.05).The impacts of feed intake,egg production,feed-egg-ratio,yolk-color and shape-index had no significant impact.It can significantly increase serum SOD,GSH-Px and T-AOC activity (P<0.05),and decrease the serum MDA content with adding multiple antioxidants (P<0.01).After 28-day-test,the multiple antioxidants significantly increase the Yolk T-AOC and reduce the MDA content (P<0.01).T3 showed that it rise the Yolk T-AOC by 137%-168%,and reduce the MDA content by 99.27%-166.97%.Studies have shown:Multiple antioxidants can improve the antioxidant capacity of hens,egg production and Haugh units.