Effects of micro and macroalgal diet supplementations on growth and immunity of greenlip abalone, Haliotis laevigata
Effects of micro and macroalgal diet supplementations on growth and immunity of greenlip abalone, Haliotis laevigata
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DOI：
10.1016/j.aquaculture.2011.08.009
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发表时间：
2011-10-19
期刊：
影响因子：
4.5
通讯作者：
Benkendorff, Kirsten
中科院分区：
文献类型：
--
作者：
Dang, Vinh T.;Li, Yan;Benkendorff, Kirsten
有机体。本研究以商品配方颗粒为对照，研究了大型藻类石笋和丝状螺旋藻、蓝藻极大节旋藻和微藻杜氏盐藻对皱纹盘鲍生长和免疫的影响。在12周内，扇贝或丝状鲍鱼的生长率最低，这表明单一大型藻类饲料中缺乏鲍鱼生长所需的营养物质。颗粒饲料中添加10%的极大黄曲霉和盐藻，鲍壳长度和体重分别增加13.3%和30.7%，体重增加19.9%和33.4%。补加藻类对血淋巴免疫功能的影响主要表现在血细胞总数(THC)的下降以及对超氧阴离子和抗鳗弧菌活性的某些饲料特异性影响。不同饲料对鲍鱼血淋巴的吞噬功能、酚氧化酶活性和抗病毒活性无明显影响。推测鲍鱼血淋巴中的体液抗菌因子是先天生物合成的，而不是饲料衍生的化合物。然而，与鲍鱼颗粒(47.42%)或添加极大白头翁(46.3%)或桑拿(46%)相比，摄食生菜和丝状鲍鱼的消化脂提取物具有较强的抗HSV-1活性，同时具有较强的抗病毒活性。这表明，鲍鱼也可能通过藻类衍生的生物活性化合物对口腔病原体产生一定的保护作用。这些结果表明，在鲍鱼养殖中添加食用菌和盐藻可以优化鲍鱼的生长速度，而生菜和丝状菌可以作为鲍鱼养殖的有益补充剂，特别是在疱疹病毒感染的高危地区。(C)2011爱思唯尔B.V.保留所有权利。
organisms. This study examines the effect of macroalgae Ulva lactuca and Spyridia filamentosa, cyanobacteria Arthrospira maxima, and microalgae Dunaliella salina on the growth and immunity of Haliotis laevigata, in comparison to a commercially formulated pellet. Over 12 weeks, U. Iactuca or S. filamentosa produced the lowest growth rate, indicating lack of nutrients for abalone growth in a single macroalgae diet. Pellets supplemented with 10% A. maxima or D. salina resulted in increased abalone shell length (13.3 and 30.7%, respectively) and body weight (19.9 and 33.4%) over the pellet control diet. The impact of algal supplementation on hemolymph immunity was mainly represented by a drop in total hemocyte counts (THC) and some diet specific effects on superoxide anion and antibacterial activity against Vibrio anguillarum. No effect of diet was observed on phagocytosis, phenoloxidase, or antiviral activity against herpes simplex virus type 1. It is conceived that the humoral antimicrobial factors in abalone hemolymph are innately biosynthesized rather than dietary derived compounds. Nevertheless, concomitant with strong antiviral activity against HSV-1 in a lipophilic extract of U. lactuca and S. filamentosa, higher antiviral activity was detected in the digestive lipid extract of abalone fed U. lactuca (64.2% at 650 mu g ml(-1)) or S. filamentosa (69.51%) compared to abalone fed pellets (47.42%) or pellets supplemented with A. maxima (46.3%) or D. sauna (46%). This suggests that abalone may also derive some protection against oral pathogens by algal derived bioactive compounds. These results indicate that abalone growth rate could be optimized by A. maxima and D. salina supplementations, whereas U. lactuca and S. filamentosa could be useful supplements for abalone aquaculture, especially in areas with high risk of herpesvirus infection. (C) 2011 Elsevier B.V. All rights reserved.