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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Partial replacement of fish meal with Spirulina pacifica in diets for parrot fish (Oplegnathus fasciatus).
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Partial replacement of fish meal with Spirulina pacifica in diets for parrot fish (Oplegnathus fasciatus).

机译：鹦鹉鱼（Oplegnathus fasciatus）日粮中用螺旋藻部分替代鱼粉。

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An 8-week feeding trial was conducted in low temperature season to investigate the effects of fish meal (FM) replacement with spirulina on growth performance, body composition and immune response of parrot fish and dietary antioxidant capacity. Four isonitrogenous (48% crud protein) and isocaloric (17.1 MJ/kg gross energy) diets were formulated to replace FM with 0 (as control), 5, 10 and 15% spirulina (designated as Con, S5, S10 and S15, respectively) and fed to the fish (initial body weight, 57+or-0.1 g) to apparent satiation. At the end of the feeding trial, significantly (P<0.05) higher weight gain, protein efficiency ratio and feed intake and lower feed conversion ratio were observed in fish fed S5 diet compared to those fed the Con and S15 diets. Hematocrit, hemoglobin and respiratory burst activity were also significantly (P<0.05) increased in fish fed S5 diet. Fish fed S15 diet had significantly (P<0.05) higher muscle protein and lower whole-body lipid than those fed the Con diet. Spirulina supplementation in diets increased dietary polyphenols concentration and antioxidant capacity in a dose dependent manner. A second-order polynomial regression analysis shows that the optimum dietary FM protein replacement level by spirulina is approximately 7.3% for the best growth rate. The findings indicate that spirulina can replace up to 15% FM protein (26% dietary inclusion) in the presence of relatively high soybean meal contents in diets for parrot fish.
机译：在低温季节进行了为期8周的喂养试验，以研究用螺旋藻替代鱼粉（FM）对鹦鹉鱼的生长性能，身体成分和免疫反应以及膳食抗氧化能力的影响。配制了四种等氮（48％的粗蛋白质）和等热量（17.1 MJ / kg总能量）的日粮，以0（作为对照），5％，10和15％的螺旋藻（分别称为Con，S5，S10和S15）代替FM。 ）并喂鱼（初始体重57+或-0.1克），使其明显饱食。在饲喂试验结束时，与饲喂Con和S15饲料的鱼相比，饲喂S5饲料的鱼的体重增加，蛋白质效率比和饲料摄入量显着（P <0.05）高，饲料转化率更低。喂食S5饲料的鱼的血细胞比容，血红蛋白和呼吸爆发活性也显着增加（P <0.05）。饲喂S15日粮的鱼类比饲喂Con日粮的鱼类具有显着（P <0.05）的肌肉蛋白含量和更低的全身脂质含量。饮食中螺旋藻的补充以剂量依赖性方式增加了饮食中多酚的浓度和抗氧化能力。二阶多项式回归分析表明，对于最佳生长速度，螺旋藻的最佳膳食FM蛋白替代水平约为7.3％。研究结果表明，在鹦鹉鱼日粮中豆粕含量较高的情况下，螺旋藻最多可以替代15％的FM蛋白（日粮含量为26％）。

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