Vegetable oils as alternative lipid diet for Rainbow trout, European seabass and Seabream

Öz

The importance of aquaculture increases together with the rising demand for food for the continu- ously growing world population. Aquafeed is of great importance in aquaculture which has a 40% share in sheries. The primarily raw materials of aquafeed are sh meal and sh oil. Due to its consumption by human beings and its use in feed for terrestrial animals as well as its dependency on annual shery yields, sh oil is a raw material with rising costs. Besides, sh oil is an excellent lipid source due to its omega-3 fatty acid content. In order to provide sustainability and economic bene ts it is obligatory for the aquafeed industry to nd suitable substitutes for sh oil that meet the requirements of the sh. For this purpose recent research on aquafeed was focused on easy to obtain, economic and standardized unsaturated fatty acids rich for supply of vegetable oil sources. It was indicated that sh oil can be replaced partially or totally by vegetable oils without any negative impact on growth performance and feed evaluation of marine or freshwater sh. In this study the effects of different vegetable oil sources in sh diet on three economically important species have been evaluated with regard to recent research. 

Anahtar Kelimeler

• Fish feeding,sh oil,vegetable oils,growth

Gökkuşağı Alabalığı, Avrupa Deniz Levreği ve Çipura İçin Alternatif Bitkisel Yağ Kaynakları

Öz

Dünya nüfusunun gıda gereksinimlerini karşılamada önemli bir yer tutan su ürünlerine talep artmaktadır. Su ürünleri üretiminde %40’lık bir yer tutan su ürünleri yetiştiriciliğinde de balık besleme büyük öneme sahiptir. Balık beslemede, temel hammadde kaynağını balık unu ve balık yağı bileşenleri oluşturmaktadır. Balık yağı, insan tüketiminde ve karasal hayvanların yemlerinde de kullanılmasından dolayı ve yıllık eldesi avcılığa bağlı oldu- ğundan yemlerde maliyeti arttıran bir hammaddedir. Bunun yanında, balık yağı omega-3 yağ asitleri bakımından, rasyonlar için mükemmel bir yağ kaynağıdır. Sürdürülebilir ve ekonomik yetiştiricilik faaliyetleri için balık yağına alternatif, balığın besin ihtiyaçlarını karşılayabilecek yağ kaynaklarının bulunması zorunludur. Bu amaçla, son yıllarda balık besleme üzerine yapılan çalışmalarda temini kolay, ekonomik, üretim miktarları değişim gösterme- yen ve doymamış yağ asitlerince zengin bitkisel yağ kaynaklarının kullanılması üzerinde yoğunlaşılmıştır. Deniz ve tatlısu balıklarında büyüme ve yem değerlendirmeyi olumsuz yönde etkilemeden balık yağının kısmen veya tamamen bitkisel yağ kaynakları ile değiştirilebileceği belirtilmiştir. Bu çalışmada, ekonomik öneme sahip üç balık türünün yemlerinde kullanılan farklı bitkisel yağ kaynaklarının etkileri yapılan güncel araştırmalar doğrultusunda değerlendirilmiştir 

Anahtar Kelimeler

• Balık Besleme,Balık Yağı,Bitkisel Yağlar,Büyüme

Kaynakça

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