A 56-day fish feeding trial was conducted to investigate the effects of dietary Arthrospira platensis on the growth performance, body chemical composition, serum biochemical parameters and antioxidant capacity in hybrid yellow catfish (Pelteobagrus fulvidraco♀ ×Pelteobagrus vachelli♂). Three experimental feeds were prepared. The protein concentrations of these three experimental diets were similar; one was a commercial diet (CD). The other two diets were with (AP⁺) or without (AP⁻) 1% A. platensis. A total of 270 hybrid yellow catfish were randomly divided into nine cages (three cages per treatment, 30 fish per tank) and fed experimental diets. In order to avoid the influence of different protein sources, the proportion of protein in each feed formulation was kept the same. The results revealed that dietary supplementation of 1% A. platensis significantly increased the food intake and growth performance of hybrid yellow catfish (P < 0.05). The crude lipid whole-body content was significantly decreased (P < 0.05). The activity of trypsin from the intestine of the AP⁺ group was significantly higher than that of AP⁻ (P < 0.05). The albumin (ALB), high density lipoprotein cholesterol (HDL-C), total cholesterol (TCHO), and total protein (TP) from the plasma of AP⁺ were significantly higher than those of AP⁻ (P < 0.05), while the plasma total bile acid (TBA) decreased (P < 0.05). Plasma glutathione peroxidase (GSH-Px), catalase (CAT), superoxide dismutase (SOD) and lysozyme (LZM) of AP⁺ were significantly higher than those of AP⁻ (P < 0.05), while the plasma and hepatic malondialdehyde (MDA) were decreased (P < 0.05). The gene expression levels of akt2, pi3k, ghrelin, and npy of AP⁺ were significantly higher than those of AP⁻ (P < 0.05). The present results indicated that dietary supplementation of 1% A. platensis could promote the growth performance, reduce the fat content, improve the antioxidant capacity, and promote the expression of appetite genes.

进行了为期56天的鱼类饲养试验，以研究日粮节肢动物对杂交黄yellow鱼（Pelteobagrusfulvidraco♀ × Pelteobagrusvachelli♂）的生长性能，身体化学组成，血清生化参数和抗氧化能力的影响。制备了三种实验饲料。这三种实验饮食的蛋白质浓度相似。一种是商业饮食（CD）。其他两个日粮与（AP ⁺）或无（AP ^-）1％A.螺旋藻。总共270只杂交黄yellow鱼被随机分为9个网箱（每个处理3个网箱，每罐30条鱼）并喂食实验饲料。为了避免不同蛋白质来源的影响，每种饲料配方中蛋白质的比例应保持相同。结果表明，饮食中添加1％的白僵菌显着提高了杂交黄cat鱼的摄食量和生长性能（P  <0.05）。粗脂质全身含量显着降低（P  <0.05）。胰蛋白酶的来自AP的肠活性⁺组较AP的显著更高^- （P <0.05）。从AP的血浆白蛋白（ALB），高密度脂蛋白胆固醇（HDL-C），总胆固醇（TCHO），总蛋白（TP）⁺均较AP的显著更高^- （P  <0.05），而血浆总胆汁酸（TBA）降低（P  <0.05）。血浆谷胱甘肽过氧化物酶（谷胱甘肽过氧化物酶），过氧化氢酶（CAT），超氧化物歧化酶（SOD）和AP的溶菌酶（LZM）⁺均较AP的显著更高^- （P  <0.05），而血浆和肝丙二醛（MDA）降低（P  <0.05）。的基因表达水平AKT2，PI3K，生长素释放肽，和NPY AP的⁺均较AP的显著更高^- （P  <0.05）。目前的研究结果表明，日粮中添加1％的拟南芥可以促进其生长性能，降低脂肪含量，提高抗氧化能力，并促进食欲基因的表达。