The effects of vaccarin on the production performance,egg quality and serum antioxidant indicators of laying ducks
In order to investigate the effects of flavonoid glycosides from Atractylodes macrocephala on the production performance,egg quality,and serum antioxidant indicators of laying ducks,800 healthy Shaoxing laying ducks aged 150 days were randomly divided into 4 groups,with 10 replicates in each group,with 20 ducks in each replicate.The experiment lasted for 90 days,and 0,3,6,and 12 mg/kg of flavonoid glycosides from Atractylodes macrocephala were added to the basic diet as the experimental diet.The experimental results showed that compared with the control group,the egg laying rate of ducks in the groups treated with 3,6,and 12 mg/kg Wangbuliuxing flavonoid glycosides increased by 0.21% (P＞0.05),4.70% (P＜0.05),and 3.36% (P＜0.05),respectively;The feed to egg ratio increased by 0.75% (P＞0.05),5.09% (P＜0.05),and 5.99% (P＜0.05),respectively;The daily egg weight increased by 0.65% (P＞0.05),5.05% (P＜0.05),and 6.56% (P＜0.05),respectively;In addition,Wang Buliuxing flavonoid glycosides had no significant effect on the average egg weight and feed intake of ducks(P＞0.05).Compared with the control group,the addition of 6 and 12 mg/kg of Wangbuliuxing flavonoid glycosides significantly increased the yolk color and Ha units of duck eggs(P＜0.05),as well as the content of methionine and threonine in duck eggs(P＜0.05);When adding 3 mg/kg of Wangbuliuxing flavonoid glycoside,the above indicators did not show significant improvement(P＞0.05);In addition,Wang Buliuxing flavonoid glycosides had no significant effect on the thickness,strength,egg shape index,as well as the content of lysine,phenylalanine,isoleucine,leucine,and valine in duck eggs(P＞0.05).Compared with the control group,supplementing with 6 and 12 mg/kg of Wangbuliuxing flavonoids significantly increased the activities of SOD and CAT in duck serum(P＜0.05)and significantly reduced the content of H2O2 in duck serum(P＜0.05),while the 3 mg/kg addition group had no significant effect on the above indicators(P＞0.05);All three addition groups were able to significantly reduce the serum MDA content in ducks(P＜0.05);In addition,Wang Buliuxing flavonoid glycosides had no significant effect on the activities of GSH Px and T-AOC in the serum of ducks(P＞0.05).(Conclusion)Wangbuliuxing flavonoid glycosides can significantly improve the antioxidant capacity,improve egg quality,and enhance production performance of ducks.Under the conditions of this experiment,the optimal addition amount is 6 mg/kg.
egg duckvaccarinegg production performanceantioxidant
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