Abstract An 8-week feeding trial was conducted to investigate the impacts of dietary phospholipid (PL) on growth, antioxidant status and lipid metabolism of Eriocheir sinensis juveniles (0.53 ± 0.01 g) fed four diets including high lipid (13%, HL) and low lipid (8%, LL) and each lipid level containing either high PL (5%, HP) or low PL (1%, LP). Final weight, weight gain, specific growth rate and molting frequency in the HL-LL group were lower than those in the HL-HP group. Compared with the HL-LP group, the enzymatic antioxidant activities increased and hepatopancreatic malondialdehyde content decreased in the HL-HP group. In addition, the high dietary PL significantly suppressed the accumulation of lipid in the hepatopancreas and the whole-body induced by high lipid diets. Quantitative real-time PCR showed that the dietary PL reduced excessive lipid deposition in the hepatopancreas through promoting lipid oxidation and exportation as well as inhibiting lipid absorption and synthesis at the transcriptional level. This study indicates that high dietary PL could promote lipid utilization in E. sinensis fed a high-lipid diet by optimizing lipid metabolism to improve growth performance.

中文翻译：

---

膳食磷脂减轻中华绒螯蟹（Eriocheir sinensis）高脂饮食的不良反应

摘要 一项为期 8 周的饲喂试验旨在研究饲粮磷脂 (PL) 对饲喂包括高脂 (13%, HL) 和高脂 (13%, HL) 四种日粮的中华绒螯蟹幼体 (0.53 ± 0.01 g) 生长、抗氧化状态和脂质代谢的影响。低脂质（8%，LL）和每个脂质水平包含高 PL（5%，HP）或低 PL（1%，LP）。HL-LL组的终重、增重、比生长率和蜕皮频率均低于HL-HP组。与HL-LP组相比，HL-HP组酶促抗氧化活性增强，肝胰腺丙二醛含量降低。此外，高膳食PL显着抑制了高脂饮食诱导的肝胰腺和全身脂质的积累。实时定量 PCR 表明，膳食 PL 通过促进脂质氧化和输出以及在转录水平抑制脂质吸收和合成，减少了肝胰腺中过多的脂质沉积。该研究表明，高日粮 PL 可以通过优化脂质代谢来提高生长性能，从而促进高脂日粮饲喂的中华绒螯蟹的脂质利用。