This study was conducted to investigate the effect of dietary supplementation with pyrroloquinoline quinone (PQQ) in the form of PQQ disodium (PQQ▪Na₂) on the growth performance, carcass traits, meat quality and antioxidative ability of broilers. A total of 720 one-d-old Arbor Acres male broilers were randomly allocated to 1 of 6 treatments with 8 replicates of 15 birds per replicate in a completely randomized design. Birds were fed a PQQ▪Na₂-unsupplemented corn-soybean meal basal diet (control) or the basal diet supplemented with 0.1, 0.2, 0.3, 0.4 or 0.5 mg PQQ▪Na₂ kg⁻¹ for 42 d. Compared with the control chicks, the chicks fed the diets supplemented with PQQ▪Na₂ had lower (P<0.05) feed:gain (F/G) during the grower phase and drip losses of breast muscles on day 42. As supplemental PQQ▪Na₂ level increased, plasma total antioxidant capacity (T-AOC) on d 42, liver T-AOC on d 21 and heart T-AOC on d 21 and 42 increased linearly (P<0.05), but malondialdehyde concentrations in plasma, liver and heart on d 21 or 42 decreased linearly (P<0.001) or quadratically (P<0.005). The results from the present study indicate that dietary supplemental PQQ▪Na₂ can improve antioxidant ability and meat quality of broilers, and in general, it is implied that the optimal supplemental PQQ▪Na₂ level is 0.1 mg kg⁻¹ of diet for broilers from 1 to 42 d of age.

这项研究旨在探讨膳食补充吡咯喹啉醌（PQQ）的PQQ二钠形式的效果（PQQ▪Na ₂的生长性能，胴体性状，肉品质和肉鸡的抗氧化能力）。总共720只一岁大的Arbor Acres雄性肉鸡被随机分配到6种处理方法中的1种，以完全随机设计将8个重复的实验重复，每重复15个鸡。给鸟类喂食PQQ■Na _2-不补充玉米-大豆粉基础饮食（对照）或补充0.1、0.2、0.3、0.4或0.5 mg PQQ•Na ₂ kg ^-1的基础饮食42 d。与对照雏鸡相比，饲喂添加了PQQ■Na _2的雏鸡的雏鸡（P<0.05）饲料：生长阶段的增重（F / G）和第42天胸肌的滴水损失。随着补充PQQ■Na ₂水平的增加，第42天，肝脏T-血浆总抗氧化能力（T-AOC）第21天的心脏AOC和第21天和42天的心脏T-AOC线性增加（P <0.05），但第21天或第42天血浆，肝脏和心脏的丙二醛浓度线性下降（P <0.001）或二次下降（P <0.005） 。本研究的结果表明，膳食补充PQQ■Na ₂可以提高肉鸡的抗氧化能力和肉质，通常暗示最佳补充PQQ■Na ₂含量为0.1 mg kg ^-1 1至42日龄的肉鸡日粮。