Journals / Turkish Journal of Fisheries and Aquatic Sciences / 2015 / Cilt: 15 - Sayı: 1

Balık Yağına İkame Eden İki Farklı Bitkisel Yağ Sınıfının Juvenil Avrupa Deniz Levreğinde (Dicentrarchus Labrax) Besinsel Sindirime Etkileri

Effects of Fish Oil Substitution with Two Different Vegetable Oil Classes on Fatty Acid Digestibility in Juvenile European Sea Bass, Dicentrarchus labrax

Pages
1–11
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The apparent total lipid digestibility decreased with increasing the PUFA/HUFA ratio in the diet.

📌 3 Key Takeaways

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Objective & Hypothesis:This study evaluated dietary polyunsaturated fatty acid (PUFA)/highly unsaturated fatty acid (HUFA) ratios in European sea bass subjected to feeds containing fish oil (FO) or two different vegetable oils (the monounsaturated fatty acid: MUFArich rapeseed oil, RO; and the n-6 PUFA-rich cottonseed oil, CSO).
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Key Findings & Data:Triplicate groups of twenty fish (35±0.2 g) were fed three fish-based diets in which the added lipid was 100% fish oil (FO), 100% refined low-erucic-acid-rapeseed oil (RO), 100% cottonseed oil (CSO) for a period of 130 days.
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Conclusion & Impact:The apparent total lipid digestibility decreased with increasing the PUFA/HUFA ratio in the diet.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

This study evaluated dietary polyunsaturated fatty acid (PUFA)/highly unsaturated fatty acid (HUFA) ratios in European sea bass subjected to feeds containing fish oil (FO) or two different vegetable oils (the monounsaturated fatty acid: MUFArich rapeseed oil, RO; and the n-6 PUFA-rich cottonseed oil, CSO). Triplicate groups of twenty fish (35±0.2 g) were fed three fish-based diets in which the added lipid was 100% fish oil (FO), 100% refined low-erucic-acid-rapeseed oil (RO), 100% cottonseed oil (CSO) for a period of 130 days. As a result of this study, final weight, weight gain and specific growth rate were significantly higher in fish fed FO and RO diet compared to fish fed CSO. Final weight in fish fed the RO diet were significantly higher (87.3±3.1 g) in comparison to fish fed the FO (84.3±1.2 g) and CSO diets (80.4±2.3, P<0.05). The concentration of eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) in flesh was significantly reduced with increasing levels of MUFA and n-6 PUFA in the diet. Accordingly, DHA value in fish fed the CSO diet was 9.41% whereas fish fed the RO diet had lower (7.93%) DHA content in the flesh. As expected, the absorption of individual dietary fatty acids decreased with chain length and increased with the degree of unsaturation. The apparent total lipid digestibility decreased with increasing the PUFA/HUFA ratio in the diet.

Özet

Bu çalışmada, balık yağı (BY) ve iki farklı bitkisel yağ (tekli doymamış yağ asitlerince zengin kolza yağı, KY ve n-6 çoklu doymamış yağ asitlerince zengin pamuk tohumu yağı; PTY) içeren yemlere tabi tutulan Avrupa deniz levreğindeki çoklu doymamış yağ asidi (PUFA)/ yüksek doymamış yağ asidi (HUFA) oranı değerlendirilmiştir. 20 adet Avrupa deniz levreği, (≈35 g) 130 gün boyunca %100 balık yağı (BY), %100 rafine edilmiş kolza yağı (KY) ve %100 rafine edilmiş pamuk tohumu yağı ilave edilmiş 3 yemle beslenmiştir. Final ağırlığı, ağırlık kazancı ve spesifik büyüme oranı karşılaştırıldığında BY ve KY yemi ile beslenen balıklar PTY yemi ile beslenenlere göre önemli düzeyde daha yüksek bulunmuştur. KY ile beslenen balıklarda final ağırlığı (87,3±3,1 g), BY(84,3±1,2 g) ve PTY (80,4±2,3; P<0,05) ile beslenenlere kıyasla önemli ölçüde daha yüksek bulunmuştur. Filetodaki eikosapentaenoik asit, (EPA) ve dokosahekzaenoik Asit (DHA) yoğunluğu, yemlerdeki MUFA ve n-6 PUFA seviyelerinin artmasıyla azalmıştır. Buna göre, PTY ile beslenen balıkların DHA miktarı %9,41 iken KY (%7,93) ile beslenen balıkların kaslarındaki DHA miktarı daha düşüktür. Tahmin edildiği üzere, diyetlerdeki bireysel yağ asitlerinin emilimi zincir uzunluğu ile azalmakta ve doymamışlık derecesiyle artmaktadır. Diyetlerdeki PUFA/HUFA oranının artmasıyla görünen total yağ sindirilebilirliği azalmaktadır.

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Cite This Article

YILMAZ, H. A., EROLDOĞAN, O. T. (2015). Balık Yağına İkame Eden İki Farklı Bitkisel Yağ Sınıfının Juvenil Avrupa Deniz Levreğinde (Dicentrarchus Labrax) Besinsel Sindirime Etkileri. Turkish Journal of Fisheries and Aquatic Sciences, Cilt: 15 - Sayı: 1, 1–11. https://ajindex.com/articles/407658

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