Abstract The objective of this study was to evaluate the immune response of Macrobrachium rosenbergii to acute stress, including the pathogen challenge, acute H2O2 and pH stress, to explore the application of biofloc systems in prawn farming. All 780 prawns (0.19 ± 0.01 g) were randomly distributed into one control group with 1/3 water changed daily (no carbon source addition) and three biofloc groups with glucose, sucrose and molasses addition (limited-exchanged water), respectively. The biofloc volume dynamics in the water showed that carbon addition significantly promoted the biofloc formation in all biofloc groups (P .05). Furthermore, the relative gene expression levels of prophenoloxidase (ProPO), catalase (CAT) and superoxide dismutase (SOD) of prawns in the biofloc groups were significantly higher than that in the control group during the acute H2O2 and pH stress (P

中文翻译：

---

添加不同碳源的生物絮团技术改变了罗氏沼虾对急性应激的抗菌和抗氧化反应

摘要 本研究的目的是评估罗氏沼虾对急性应激的免疫反应，包括病原体攻击、急性 H2O2 和 pH 应激，以探索生物絮团系统在对虾养殖中的应用。将所有 780 只虾 (0.19 ± 0.01 g) 随机分配到一个每天更换 1/3 水的对照组（不添加碳源）和三个分别添加葡萄糖、蔗糖和糖蜜（有限交换水）的生物絮团组。水中的生物絮团体积动力学表明，添加碳显着促进了所有生物絮团组中生物絮团的形成（P<0.05）。此外，酚氧化酶原 (ProPO) 的相对基因表达水平，