Effects of Compound Trace Elements on Production Performance,Egg Quality and Serum Indexes of Wenshang Luhua Chickens
Wang Zhengdong
Liu Wei
Han Haixia
Sun Yan
Liu Jie
Lei Qiuxia
Chen Fu
Li Fuwei
Abstract：This experiment was conducted to study the effects of compound trace elements on production performance,egg quality and serum biochemical indexes of Wenshang Luhua chickens.A total of 240 Wens-hang Luhua chickens with similar body weight and laying rate were randomly divided into 4 groups.The control group was fed a basal diet without addition of compound trace elements;groups Ⅰ,Ⅱ and Ⅲ were the experi-mental groups with 150,450 and 750 g/t compound trace elements added into the basal diet,respectively.The pre-test period was 2 weeks with basal diet,and the test period was 8 weeks.The results were as follows.① Adding 150 g/t compound trace elements could significantly increase the laying rate(P＜0.05)and signifi-cantly reduce the unqualified egg rate(P＜0.05).Adding 450 g/t and 750 g/t compound trace elements could significantly increase the average egg weight and egg production rate(P＜0.05),and significantly reduce the unqualified egg rate(P＜0.05).② The addition of compound trace elements significantly increased eggshell strength,eggshell thickness and eggshell ratio(P＜0.05).③ Adding 150 g/t compound trace elements tended to increase serum calcium content(P=0.065),significantly increased serum total antioxidant capacity(T-AOC),glutathione peroxidase(GSH-Px)activity and superoxide dismutase(SOD)activity(P＜0.05),and significantly increased immune globulin IgG and IgM,calcium-binding protein S100 B,parathyroid hormone(PTH),osteocalcin(OC),luteinizing hormone(LH)and calcitonin(CT)concentrations(P＜0.05).Adding 450 g/t compound trace elements could significantly increase serum calcium content,T-AOC,GSH-Px activity,SOD activity,IgA,IgG,IgM,S100 B,PTH,LH,estradiol E2 and CT concentrations(P＜0.05),and significantly reduce serum malondialdehyde content(P＜0.05).Addition 750 g/t compound trace elements significantly increased serum calcium content,T-AOC,GSH-Px activity,SOD activity,IgG,IgM,S100 B,LH,E2 and CT concentrations(P＜0.05),and significantly decreased serum malondialdehyde con-tent(P＜0.05).In summary,dietary supplementation of compound trace elements could significantly improve the laying performance,eggshell quality,antioxidant capacity and immune function of Wenshang Luhua chick-ens,and the appropriate supplemental level was 450 g/t in the test conditions.
Keywords：Wenshang Luhua chickenComplex trace elementsProduction performanceSerum inde-xesEggshell quality
Publication Date：2025-02-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 150-157 )