吡咯喹啉醌二钠对蛋鸡生产性能和鸡蛋胆固醇含量的影响

Effects of Pyrroloquinoline Quinone Disodium Salt on Performance and Egg Cholesterol Content of Laying Hens

本试验旨在探讨吡咯喹啉醌二钠(PQQ·Na2)对蛋鸡生产性能、鸡蛋胆固醇含量和机体抗氧化能力的影响。选用360只23周龄的京红1号蛋鸡,随机分为5组,即0(对照组)、0.08、0.80、1.60 mg/kg PQQ·Na2组和100 mg/kg维生素E组,每组6个重复,每个重复12只鸡。试验期8周。结果表明:1)与对照组相比,PQQ·Na2能显著提高产蛋率(1.11%)(P<0.05),对料蛋比和蛋黄相对重量没有显著影响(P>0.05),显著增加鸡蛋的蛋白高度(P<0.05)。2)与对照组相比,0.80 mg/kg PQQ·Na2能显著提高肝脏胆固醇含量(P<0.05),显著降低血浆和全蛋胆固醇含量(P<0.05);PQQ·Na2能显著提高血浆高密度脂蛋白胆固醇含量(P<0.05),对血浆低密度脂蛋白胆固醇含量无显著影响(P>0.05)。3)与对照组相比,0.80 mg/kg PQQ·Na2能显著降低血浆丙二醛含量(P<0.05),0.08 mg/kg PQQ·Na2能显著提高肝脏总超氧化物歧化酶活性和总抗氧化能力(P<0.05),对血浆总超氧化物歧化酶活性无显著影响(P>0.05);与其他组相比,1.60 mg/kg PQQ·Na2显著提高了肝脏丙二醛含量(P<0.05)。综上,产蛋鸡饲粮中添加适宜水平(0.80 mg/kg)PQQ·Na2可以提高产蛋率,增强蛋鸡机体抗氧化能力,降低鸡蛋胆固醇含量。

This experiment was conducted to evaluate the effects of dietary pyrroloquinoline quinone disodium salt （ PQQ· Na2 ） on performance, egg cholesterol content and antioxidant capacity of laying hens. Three hun- dred and sixty Jinghong hens aged 23 weeks were randomly divided into 5 groups： basal diets with 0 （control group）, 0.08, 0.80, 1.60 mg/kg PQQ· Na2 and 100 mg/kg vitamin E, respectivly. Each group contained 6 replicates with 12 hens per replicate. The experiment lasted for 8 weeks. The results showed as follows： 1 ） compared with control group, PQQ ·Na2 significantly increased laying rate （1.11% ） （P〈0.05）, had no sig- nificant effects on egg to feed ratio and egg relative weight （ P 〉 0.05 ）, but significantly increased albumen height（P〈0.05）. 2） Compared with control group, 0.80 mg/kg PQQ · Na2 significantly increased liver cho- lesterol content （ P〈0.05）, and significantly decreased cholesterol content in plasma and egg （ 11.27 % ） （ P〈 0.05）. PQQ· Na2 significantly increased plasma high density lipoprotein cholesterol content （P〈0.05）, but had no significant effect on plasma low density lipoprotein cholesterol content （P〉0.05）. 3 ） Compared with control group, 0.80 mg/kg PQQ ~ Na2 decreased plasma methane dicarboxylic aldehyde （MDA） content （P〈 0,05） and 0.08 mg/kg PQQ ~ Na2 significantly increased liver total superoxide dismutase （T-SOD） activity and total antioxidant capacity（ P〈0.05）, but had no significant effect on plasma T-SOD activity （P〉0.05）. Compared with the other groups, l. 60 mg/kg PQQ · Na2 significantly increased MDA content in liver （P〈 0.05 ）. In conclusion, this study indicates that the appropriate level of dietary PQQ · Na2（ 0.80 mg/kg） increa- ses laying rate, enhances antioxidant capacity of laying hens and decreases egg cholesterol content.