Effect of Haematococcus pluvialis on growth performance, antioxidant capacity and immune responses of Lates calcarifer
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摘要: 雨生红球藻 (Haematococcus pluvialis) 富含天然虾青素等活性物质,为评价其在尖吻鲈 (Lates calcarifer) 饲料中的应用效果,采用雨生红球藻添加量分别为0 (C)、0.2% (H1)、0.4% (H2)、0.6% (H3)、0.8% (H4) 和1.0% (H5) 的6组饲料,投喂尖吻鲈56 d。结果表明,H2、H3、H4和H5组尖吻鲈特定生长率和增重率均显著大于对照组 (P<0.05);其中H3、H4和H5组全鱼粗脂肪含量均显著低于对照组 (P<0.05);H2、H3、H4和H5组总抗氧化能力 (T-AOC) 显著高于对照组 (P<0.05),H2、H3、H4和H5组的过氧化氢酶 (CAT)、超氧化物歧化酶 (SOD) 和谷胱甘肽过氧化物酶 (GSH-Px) 活性显著低于对照组 (P<0.05),处理组的丙二醛 (MDA) 浓度显著低于对照组 (P<0.05);H3、H4和H5组实验鱼红细胞数 (RBC) 和血红蛋白 (Hb) 浓度显著高于对照组 (P<0.05),H2、H3、H4和H5组的总胆固醇 (TCHO) 和甘油三酯 (TG) 浓度显著低于对照组 (P<0.05),H3、H4和H5组的低密度脂蛋白胆固醇 (LDL-C) 浓度显著低于对照组 (P<0.05);H2、H3、H4和H5组的溶菌酶 (LZM) 活性和免疫球蛋白M (IgM) 浓度显著高于对照组 (P<0.05),H3、H4和H5组的补体4 (C4) 浓度显著高于对照组 (P<0.05)。回归分析结果表明,以增重率为目标,尖吻鲈饲料中雨生红球藻的最适添加量为0.66%。Abstract: Haematococcus pluvialis is enriched in astaxanthin. To investigate its effects in the diet of Lates calcarifer, we fed L. calcarifer by six diets containing 0 (C), 0.2% (H1), 0.4% (H2), 0.6% (H3), 0.8% (H4) and 1.0% (H5) H. pluvialis for 56 d. The results show that the specific growth rate (SGR) and weight gain rate (WGR) in H2, H3, H4 and H5 groups were significantly higher than those of the control group (P<0.05). Compared with the control group, the whole-body lipid protein content decreased significantly in the treatment groups (P<0.05). The dietary H. pluvialis improved the total antioxidant capacity (T-AOC) significantly (P<0.05), while the superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) activities and malondialdehyde (MDA) content were significantly lower than those of the control group (P<0.05). Compared with the control group, the concentrations of red blood cell (RBC), hemoglobin (Hb) and complement 4 (C4) increased (P<0.05) in H3, H4 and H5 groups, but the concentration of low-density lipoprotein cholesterol (LDL-C) decreased significantly (P<0.05). Compared with the control group, the concentrations of cholesterol (TCHO) and triglyceride (TG) decreased significantly (P<0.05), but the lysozyme (LYZ) activity and immunoglobulin (IgM) concentration increased significantly (P<0.05). The regression analysis on the WGR indicates that the recommended optimum dietary H. pluvialis level for the growth of L. calcarifer is 0.66%.
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Key words:
- Haematococcus pluvialis /
- Lates calcarifer /
- Growth performance /
- Immune responses
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表 1 实验饲料组成及营养水平 (干物质基础)
Table 1. Composition and nutrient levels of basal diet (Dry mass basis)
% 原料 Ingredient C H1 H2 H3 H4 H5 鱼粉 Fish meal 43.00 43.00 43.00 43.00 43.00 43.00 大豆浓缩蛋白 Soy protein concentrate 20.00 20.00 20.00 20.00 20.00 20.00 面粉 Wheat flour 17.00 16.80 16.60 16.40 16.20 16.00 鱼油 Fish oil 10.00 10.00 10.00 10.00 10.00 10.00 维生素预混料① Mineral premix 1.00 1.00 1.00 1.00 1.00 1.00 矿物质预混料② Mineral premix 1.00 1.00 1.00 1.00 1.00 1.00 豆粕 Soybean meal 3.00 3.00 3.00 3.00 3.00 3.00 大豆卵磷脂 Soy lecithin 1.00 1.00 1.00 1.00 1.00 1.00 甜菜碱 Betaine 0.50 0.50 0.50 0.50 0.50 0.50 啤酒酵母 Brewers yeast 3.00 3.00 3.00 3.00 3.00 3.00 氯化胆碱 Choline chloride 0.50 0.50 0.50 0.50 0.50 0.50 雨生红球藻 Haematococcus pluvialis 0.00 0.20 0.40 0.60 0.80 1.00 营养成分 Proximate composition 水分 Moisture 9.72 9.74 9.69 9.73 9.70 9.75 粗蛋白 Crude protein 47.04 47.08 47.12 47.13 47.18 47.20 粗脂肪 Crude lipid 13.67 13.64 13.58 13.53 13.50 13.46 灰分 Ash 8.32 8.31 8.28 8.26 8.25 8.30 虾青素 Astaxanthin /(mg·kg−1) 1.23 30.35 58.52 91.48 118.53 150.26 注:①. 维生素预混料 (mg·kg−1饲料):维生素B1 25,维生素B2 45,维生素B12 0.1,维生素K3 10,纤维醇 800,烟酸200,叶酸1.2,生物素 32,维生素D3 5,维生素E 120,乙氧喹150,泛酸500,微晶纤维素14.52;②. 矿物质预混料 (mg·kg−1饲料):NaF 4,KI 1.6,CoCl2·6H2O (1%) 100,CuSO4·5H2O 20,FeSO4·H2O 160,ZnSO4·H2O 100,MnSO4·H2O 120,MgSO4·7H2O 2 400,Ca(H2PO4)2·H2O 6 000,NaCl 200。 Note: ①. Vitamin premix (mg·kg−1 diet): VB1 25, VB2 45, VB12 0.1, VK3 10, Inositol 800, Nicotinic acid 200, Folic acid 1.2, Biotin 32, VD3 5, VE 120, Ethoxyquin 150, Pantothenic acid 500, Avicel 14.52; ②. Mineral premix (mg·kg−1 diet): NaF 4, KI 1.6, CoCl2·6H2O (1%) 100, CuSO4·5H2O 20, FeSO4·H2O 160, ZnSO4·H2O 100, MnSO4·H2O 120, MgSO4·7H2O 2 400, Ca(H2PO4)2·H2O 6 000, NaCl 200. 表 2 饲料中添加雨生红球藻对尖吻鲈生长性能的影响
Table 2. Effect of dietary H. pluvialis on growth performance of L. calcarifer
指标 Index 组别 Group C H1 H2 H3 H4 H5 初始均质量 Initial body mass/g 23.18±0.01 23.13±0.03 23.14±0.04 23.18±0.04 23.18±0.08 23.13±0.02 终末均质量 Final body mass/g 113.63±2.97a 118.08±2.52ab 127.43±1.11cd 132.71±2.83d 130.21±3.04cd 124.54±2.17bc 增重率 WGR/% 390.19±12.69a 410.44±11.53ab 450.70±6.01cd 472.51±11.35d 461.63±10.63cd 438.54±9.73bc 特定生长率 SGR/(%·d−1) 2.84±0.05a 2.91±0.04ab 3.05±0.02cd 3.12±0.04d 3.08±0.03cd 3.01±0.03bc 饲料系数 FCR 1.53±0.02 1.51±0.08 1.49±0.04 1.45±0.03 1.48±0.06 1.50±0.01 成活率 Survival rate/% 96.67±3.33 98.89±1.92 100±0.00 100±0.00 100±0.00 100±0.00 肝体比 HSI/% 0.57±0.01 0.55±0.02 0.52±0.03 0.48±0.04 0.50±0.03 0.55±0.02 肥满度 CF/(g·cm−3) 1.73±0.02 1.76±0.01 1.78±0.03 1.85±0.02 1.83±0.06 1.82±0.05 注:表中同一行数据上标字母不同,表示差异显著 (P<0.05),后表同此。 Note: Different superscript letters within the same line indicate significant difference (P<0.05). The same case in the following tables. 表 3 饲料中添加雨生红球藻对尖吻鲈全鱼营养成分的影响
Table 3. Effect of dietary H. pluvialis on whole body proximate composition of L. calcarifer
% 营养成分
Nutritional composition组别 Group C H1 H2 H3 H4 H5 水分 Moisture 71.13±1.12 70.63±0.1.09 70.36±0.73 71.28±1.14 70.74±1.68 70.84±1.47 粗蛋白质 Crude protein 15.21±1.04 15.42±0.48 15.61±0.65 15.70±0.53 15.41±0.92 15.45±0.83 粗脂肪 Crude lipid 2.82±0.22b 2.46±0.14ab 2.25±0.31ab 1.81±0.21a 1.84±0.15a 1.89±0.12a 粗灰分 Ash 4.46±0.13 4.52±0.13 4.48±0.16 4.51±0.21 4.53±0.17 4.49±0.21 表 4 饲料中添加雨生红球藻对尖吻鲈肝脏抗氧化指标的影响
Table 4. Effect of dietary H. pluvialis on hepatic T-AOC, SOD, CAT, GSH-Px activities and MDA contents of L. calcarifer
指标 Index 组别 Group C H1 H2 H3 H4 H5 总抗氧化能力 T-AOC/(U·mg−1) 0.62±0.03a 0.65±0.02a 0.75±0.05b 0.88±0.05c 0.85±0.02c 0.81±0.03bc 超氧化物歧化酶活性 SOD/(U·mg−1) 86.21±2.92c 84.38±1.08c 77.45±1.34b 70.25±1.18a 71.18±1.10a 71.64±2.06a 过氧化氢酶活性 CAT/(U·mg−1) 33.32±1.04c 30.25±1.42bc 27.81±2.13b 25.71±2.52ab 25.82±1.31a 26.18±1.81a 谷胱甘肽过氧化物酶活性 GSH-Px/(U·mg−1) 185.31±2.15d 166.53±4.29c 149.27±5.28b 139.64±5.37a 142.72±5.21ab 145.58±3.17ab 丙二醛质量摩尔浓度 MDA/(nmol·mg −1) 6.92±0.41d 6.32±0.27c 4.78±0.24b 4.03±0.26a 4.32±0.35ab 4.65±0.25b 表 5 饲料中添加雨生红球藻对尖吻鲈血液生理指标的影响
Table 5. Effect of dietary H. pluvialis on blood physiological parameters of L. calcarifer
指标 Index 组别 Group C H1 H2 H3 H4 H5 红细胞数 RBC/109 mL−1 1.85±0.21a 1.87±0.13a 1.98±0.14ab 2.24±0.34b 2.35±0.31b 2.41±0.23b 白细胞数 WBC/106 mL−1 9.21±0.16 9.23±0.23 9.31±0.11 9.38±0.15 9.44±0.13 9.46±0.24 血红蛋白 Hb/(g·100 mL−1) 5.31±0.13a 5.38±0.22a 5.52±0.15ab 5.67±0.14b 5.74±0.23b 5.78±0.16b 红细胞积压 Ht/% 43.35±1.37 43.12±1.48 42.35±1.72 42.27±2.21 42.55±1.45 42.39±2.41 表 6 饲料中添加雨生红球藻对尖吻鲈血清生化指标的影响
Table 6. Effect of dietary H. pluvialis on serum biochemical parameters of L. calcarifer
指标 Index 组别 Group C H1 H2 H3 H4 H5 总胆固醇浓度 TCHO/(mmol·L−1) 4.23±0.05b 3.91±0.12ab 3.71±0.24ab 3.55±0.15a 3.53±0.04a 3.48±0.13a 甘油三酯浓度 TG/(mmol·L−1) 3.62±0.13b 3.45±0.12b 3.21±0.11ab 2.93±0.24a 2.88±0.31a 2.82±0.26a 低密度脂蛋白胆固醇浓度 LDL-C/(mmol·L−1) 0.86±0.03b 0.77±0.04ab 0.64±0.05a 0.61±0.03a 0.57±0.04a 0.56±0.14a 高密度脂蛋白胆固醇浓度 HDL-C/(mmol·L−1) 2.66±0.12 2.63±0.05 2.58±0.05 2.53±0.03 2.51±0.06 2.48±0.02 血糖浓度 GLU/(mmol·L−1) 6.89±1.02 6.62±0.42 6.54±0.17 6.49±0.26 6.53±0.21 6.51±0.18 皮质醇质量浓度 Cortisol/(ng·mL−1) 67.61±1.47 67.13±1.28 66.53±2.35 66.24±1.08 66.11±1.83 66.52±1.58 表 7 饲料中添加雨生红球藻对尖吻鲈血清免疫指标的影响
Table 7. Effect of dietary H. pluvialis on serum immune indexes of L. calcarifer
指标 Index 组别 Group C H1 H2 H3 H4 H5 溶菌酶活性 LZM/(U·mL−1) 83.83±2.52a 85.36±1.64a 89.38±2.01ab 92.75±2.51b 93.16±1.24b 94.34±2.87b 免疫球蛋白M质量浓度 IgM/(mg·mL−1) 11.97±0.35a 12.26±0.23a 14.63±0.44ab 17.61±0.36b 18.41±0.96b 19.11±1.32b 补体4质量浓度 C4/(g·L−1) 0.39±0.03a 0.42±0.05ab 0.52±0.03b 0.56±0.06b 0.58±0.04b 0.61±0.08b -
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