کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5539388 | 1552814 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Combined replacement of fishmeal and fish oil in European sea bass (Dicentrarchus labrax): Production performance, tissue composition and liver morphology
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کلمات کلیدی
Viscerosomatic indexEPADGIPFIHSIVSILC-PUFAArachidonic acid - اسید آراشیدونیکEicosapentaenoic acid - اسید ایکوزاپنتانوئیکdocosahexaenoic acid - اسید داکوزاگزوائونیکFatty acid - اسید چربlong-chain polyunsaturated fatty acid - اسید چرب اشباع نشده چای زنجیره ای طولانیLong chain polyunsaturated fatty acid - اسید چرب چرب اشباع نشدهARA - در حال حاضرDHA - دوکوساهگزائنوئیک اسیدFeed efficiency - راندمان خوراکVegetable oil - روغن سبزیجاتFish oil - روغن ماهیEuropean sea bass - ساحل دریای اروپاHepatosomatic index - شاخص HepatosomaticGrowth performance - عملکرد رشدCondition factor - فاکتور وضعیتLiver morphology - مورفولوژی کبدFish meal - وعده ماهیFatty acid profiles - پروفیل اسید چرب
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The aim of this study was to evaluate the combination of maximum replacement of fishmeal (FM) and fish oil (FO) by alternative meals (AM) and oils (AO) to develop nutritious, but more eco-friendly diets for European sea bass (Dicentrarchus labrax) juveniles. European sea bass of 9.8 ± 1.5 g and 9.1 ± 0.5 cm were fed nine isonitrogenous (45% crude protein) and isolipidic (21%) diets containing gradually reduced levels of FM and FO as follows (%FM/%FO): 58/15, 20/6, 20/3, 10/6, 10/3, 5/6, 5/3 and 0/0. Another diet, 0/0+, was similar to the 0/0 but supplemented with LC-PUFA from microbial and marine sources. After 90 days of feeding, European sea bass fed the 0/0 diet showed reduced (P < 0.05) final weight, final length, condition factor, perivisceral fat index and viscero-somatic index as well as feed efficiency, whereas addition of LC-PUFA significantly improved daily growth index (DGI) (0/0+ diet). Reduction of FM/FO down to 5/3 did not significantly affect fish survival or condition factor, whereas reduction to 5/6 did neither affect sea bass length or feed conversion and reduction down to 10/3 did not affected body weight, DGI and perivisceral fat or visceral weight. FM reductions down to 5% significantly reduced growth rate. FO substitution by vegetable oils (VO) led to reduced growth and increased liver to body weight ratios, liver lipid deposition and hepatocellular size. In liver and muscle, FO substitution increased n-6 fatty acids (FA) and n-6/n-3 ratio and reduced saturated FA and n-3 LC-PUFA, whereas monounsaturated FA were not increased in proportion to dietary contents. Moreover, FO reduction increased the products from Î6 desaturase and elongases, Elovl6 and Elovl5. In conclusion, the results of this study show that it is possible to reduce dietary FM and FO levels down to 10% and 3% in mostly plant-based diets without affecting growth performance of European sea bass juveniles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquaculture - Volume 474, 1 May 2017, Pages 101-112
Journal: Aquaculture - Volume 474, 1 May 2017, Pages 101-112
نویسندگان
S. Torrecillas, L. Robaina, M.J. Caballero, D. Montero, G. Calandra, D. Mompel, V. Karalazos, S. Kaushik, M.S. Izquierdo,