The imbalance of fish oil (FO) supply and demand has motivated efforts to identify an alternative for aqua feed. An 8‐week feeding trial was conducted to evaluate the effects of dietary fish oil partial replacement with mixed oil from linseed and lard (1:1) on growth, body composition and immunity when the N3 long‐chain polyunsaturated fatty acid (N3 LC‐PUFAs) requirement is met for Nibea albiflora. Two types of experimental diets were formulated with 100% fish oil (FO) or 69% mixed oil (Mix). The results indicated that the Mix diet significantly improved the specific growth rate (SGR), weight gain (WG), feed efficiency ratio (FER), muscle tissue growth hormone receptor (GHR), insulin‐like growth factor 1 (IGF1) and insulin‐like growth factor 1 receptor (IGF1R) gene expression of the yellow drum (p < .05). No significant difference in the survival rate (SR), feed intake (FI), hepatosomatic index (HSI), viscerosomatic index (VSI), condition factor (CF), N3 PUFA percentage, liver antioxidant enzyme activities or pro‐inflammatory gene expression was observed between the two treatments. Therefore, terrestrial blend lipid from linseed and lard could be used as an alternative for dietary fish oil without compromising growth performance and immunity for the juvenile yellow drum.

中文翻译：

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用陆生脂质混合物部分替代鱼油及其对黄鼓（Nibea albiflora）生长性能、身体成分、免疫参数和生长相关基因的影响

鱼油 (FO) 供需失衡促使人们努力寻找水产饲料的替代品。一项为期 8 周的喂养试验旨在评估当 N3 长链多不饱和脂肪酸 (N3 LC- Nibea albiflora 满足 PUFA) 要求。用 100% 鱼油 (FO) 或 69% 混合油 (Mix) 配制两种类型的实验饮食。结果表明，混合日粮显着提高了比生长率 (SGR)、增重 (WG)、饲料效率比 (FER)、肌肉组织生长激素受体 (GHR)、胰岛素样生长因子 1 (IGF1) 和胰岛素黄鼓的-样生长因子 1 受体 (IGF1R) 基因表达 (p < .05)。存活率（SR）、采食量（FI）、肝体指数（HSI）、内脏指数（VSI）、状况因子（CF）、N3 PUFA百分比、肝脏抗氧化酶活性或促炎基因表达无显着差异。在两次治疗之间观察到。因此，来自亚麻籽和猪油的陆生混合脂质可用作膳食鱼油的替代品，而不会影响幼黄鼓的生长性能和免疫力。