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首页> 外文期刊>Aquaculture Nutrition >Effects of short-chain fructooligosaccharides on growth performance and hepatic intermediary metabolism in turbot (Scophthalmus maximus) reared at winter and summer temperatures
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Effects of short-chain fructooligosaccharides on growth performance and hepatic intermediary metabolism in turbot (Scophthalmus maximus) reared at winter and summer temperatures

机译：短链低聚果糖对冬季和夏季饲养大菱turbo生长性能和肝中间代谢的影响

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摘要

The effect of short-chain fructooligosaccharides (scFOS) incorporation on growth, feed utilization, body composition, plasmatic metabolites and selected liver enzyme activities of turbot juveniles reared at winter (15 degrees C) and summer (20 degrees C) temperatures was studied. Four comparable diets were formulated to contain circa 50:50 fish meal and plant ingredients as protein sources. Experimental diets included increasing levels of scFOS (0, 5, 10 and 20gkg(-1)). Final weight was higher at 20 degrees C, but thermal growth unit, feed efficiency, nitrogen and energy retention were better at 15 degrees C. scFOS supplementation did not affect fish growth performance. Fish reared at 15 degrees C had higher liver glycogen, visceral and hepatosomatic indices. Liver lipids, plasma triglycerides, total lipids, cholesterol HDL and LDL were higher in turbot reared at 20 degrees C. Malic enzyme, fatty acid synthetase, alanine aminotransferase and glutamate dehydrogenase activities were higher in fish reared at 15 degrees C. Malic enzyme was lower in turbot fed with 20gkg(-1) scFOS compared to control diet; however, fatty acid synthetase presented an increasing trend as dietary scFOS increased up to 10gkg(-1). Glutamate dehydrogenase activity was higher in fish fed the control diet. Results seem to indicate no benefits of scFOS incorporation to diets on growth performance of turbot.
机译：研究了短链低聚果糖（scFOS）掺入对冬季（15摄氏度）和夏季（20摄氏度）饲养的大菱turbo幼体生长，饲料利用率，身体成分，血浆代谢产物和所选肝酶活性的影响。配制了四种可比较的日粮，其中包含约50:50的鱼粉和植物成分作为蛋白质来源。实验饮食包括增加的scFOS水平（0、5、10和20gkg（-1））。最终重量在20摄氏度时更高，但在15摄氏度时热生长单位，饲料效率，氮和能量保留更好。scFOS补充剂不会影响鱼的生长性能。在15摄氏度饲养的鱼肝糖原，内脏和肝体指数较高。在20摄氏度饲养的大菱turbo中肝脂质，血浆甘油三酸酯，总脂质，胆固醇HDL和LDL较高。在15摄氏度饲养的鱼中苹果酸，脂肪酸合成酶，丙氨酸氨基转移酶和谷氨酸脱氢酶活性较高。与对照饮食相比，饲喂20gkg（-1）scFOS的大菱t;然而，随着饮食中scFOS的增加，脂肪酸合成酶呈上升趋势，至10gkg（-1）。饲喂对照日粮的鱼的谷氨酸脱氢酶活性较高。结果似乎表明，将scFOS掺入饮食中对菱turbo的生长性能没有好处。

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