China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (7): 2404-2414.doi: 10.16431/j.cnki.1671-7236.2021.07.015

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effects of Cordyceps Powder Combined with Yeast Selenium on Laying Performance,Egg Quality,Antioxidant and Immune Function in Middle Egg-laying Peak of Laying Hen

GU Dongdi, DENG Zaishuang, REN Man, SUN Yuhao, GU Youfang, JIN Guangming, JIN Erhui   

  1. College of Animal Science, Anhui Science and Technology University, Fengyang 233100, China
  • Received:2021-01-11 Online:2021-07-20 Published:2021-07-15

Abstract: The purpose of this study was to study the effects of Cordyceps powder (Cordyceps sinensis culture powder) combined with yeast selenium on laying performance,egg quality,antioxidant function and immune function of laying hens.A total of 450 24-week-old Hy-Line variety Brown were randomly divided into 5 groups with 6 replicates in each group and 15 hens per repeat.The control group was fed with basic diet,and groups Ⅰ-Ⅳ were fed with basic diet supplemented with 0.1 mg/kg yeast selenium and different doses of Cordyceps powder (0,0.2%,0.3% and 0.4%),respectively.The experimental period was 27 weeks.The laying performance,egg quality,immune function and antioxidant function of laying hens were analyzed in the middle period of laying peak (40th week).The results showed that compared with control group,the laying rate and average egg weight of laying hens in group Ⅲ were significantly higher and the ratio of feed to egg was significantly lower (P<0.05);Haugh unit,eggshell color,eggshell strength,yolk color,yolk crude protein content,yolk crude protein and crude fat content were significantly increased (P<0.05);The levels of essential amino acids Leu,Lys,Met,Trp,Phe,Thr,Val and His and non-essential amino acids Ala,Asp,Glu,Pro and Tyr in egg white were also significantly increased (P<0.05);The eggshell color,eggshell strength,Haugh unit and crude protein content of egg white,essential amino acids Ile,Gly,Arg and non-essential amino acids Cys and Ser in egg white were also significantly increased in group Ⅳ (P<0.05),and the selenium content in yolk and egg white were significantly increased in groups Ⅰ-Ⅳ (P<0.05).At the same time,compared with control group,the serum MDA content was significantly reduced (P<0.05),the number of WBCs,the serum IFN-γ and IL-2 levels,and the T-AOC and T-SOD activities were all significantly increased of the laying hens in middle stage of the egg production peak in group Ⅲ (P<0.05).The results indicated that the combination of yeast selenium and appropriate amount of Cordyceps powder could significantly improve the laying performance and egg quality of laying hens in middle of laying peak,enhance immunity and antioxidant capacity,and the effect of 0.3% Cordyceps powder combined with 0.1 mg/kg yeast selenium was the best.

Key words: Cordyceps powder; yeast selenium; laying performance; egg quality; immune function; antioxidant capacity

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