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Effect of dietary fatty acid composition on the growth of the tiger puffer Takifugu rubripes

机译:日粮脂肪酸组成对虎斑红T生长的影响

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Effects of dietary fatty acid composition on the growth of the tiger puffer Takifugu rubripes were examined. Eight experimental diets were formulated with fish meal and casein as the major ingredients, providing 45.0–48.2% crude protein. Pollack and squid liver oils were used for the control diet while experimental diets contained three levels of EPA-DHA concentrated (C-HUFA) oils, soybean oil, linseed oil, and combinations of them, providing 0.5–5.5% n-3 HUFA and 5.0–11.1% crude lipid. Triplicate groups of fish with a mean body weight of 18.7 g per dietary treatment were fed the diets twice daily to apparent satiation, 6 days per week for 8 weeks. The final body weight and weight gain of the fish fed the soybean oil diet without C-HUFA oils were significantly lower than those fed the control diet. Both parameters were not statistically different among the other dietary groups, although the values obtained for the linseed oil diet without C-HUFA oils were lower. Similar trends were seen for SGR and feed efficiency. However, significantly lower PER values compared to the control were observed for the lower C-HUFA and the vegetable oil without C-HUFA oil groups. These results indicate that tiger puffer can be produced successfully with diets containing more than 1.5% n-3 HUFA.
机译:研究了日粮脂肪酸组成对老虎河豚(Takifugu rubripes)生长的影响。以鱼粉和酪蛋白为主要成分配制了八种实验饮食,提供了45.0–48.2%的粗蛋白。对照饮食中使用了鳕鱼和鱿鱼肝油,而实验饮食中则包含EPA-DHA浓缩(C-HUFA)油,大豆油,亚麻子油及其三种组合的三种含量,提供0.5–5.5%的n-3 HUFA和5.0–11.1%的粗脂质。每天两次给平均体重为18.7 g的三组鱼喂食,每天两次,以明显的饱食感,每周6天,共8周。饲喂不含C-HUFA油的大豆油日粮的最终体重和增重显着低于饲喂对照日粮的鱼。尽管没有C-HUFA油的亚麻籽油饮食获得的值较低,但其他饮食组之间的两个参数在统计学上没有差异。 SGR和饲料效率也有类似趋势。然而,对于较低的C-HUFA和不含C-HUFA油基的植物油,观察到与对照相比,PER值显着较低。这些结果表明,用含有超过1.5%n-3 HUFA的日粮可以成功地生产河豚。

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