The effects of fish meal replacement by yeast based nucleotides on growth body composition and digestive enzyme activity in rainbow trout juveniles Oncorhynchus mykiss

ARZU ÖZLÜER HUNT | Ferbal Özkan Yılmaz | Kenan Engin | Serap Yalın | Nefise Özlen Şahin

This 60 day study investigated the effects of organically certified nucleotide yeast-derived protein source (Nu-Pro®) on growth, feed efficiency, fillet proximate composition and digestive enzymes in rainbow trout (Onchorhyncus mykiss). Diets were isonitrogenous and isocaloric. Three experimental diets wherein 20%, 40% and 60% of the fish meal content was replaced by Nu-Pro®, were compared to the control diet in which the crude protein content was anchovy fish meal and corn gluten meal. The rainbow trout (initial weight 27 g/fish) were fed twice daily in 200-l Aqaria. Live weight gain increase ...Daha fazlası

Makale 2014 The Israeli Journal of Aquaculture - Bamidgeh ( 66 ) , pp. 9 - 974 18 Görüntülenme

Süreli Ambargo

Distinct patterns of sedimentary phosphorus fractionation and mobilization in the seafloor of the Black Sea, Marmara Sea and Mediterranean Sea

İsmail Akçay

Phosphorus (P) is a key element to all life that is used for structural and functional component of all organisms. The cycling of sedimentary P may differ depending on the redox-conditions of the overlying waters affecting the dynamics, and distribution of P-fractions and the elements that are highly coupled to P cycle. Though biogeochemistry of water column in the three interconnected marine basins of Black, Marmara and Mediterranean Seas have been studied extensively, few studies were carried out to understand sedimentary P dynamics in these regions. In this study, therefore, the biogeochemi ...Daha fazlası

Makale 2023 Science of The Total Environment863 , pp. 1 - 13 27 Görüntülenme Ambargo Kalkış : 31.03.2028

Süreli Ambargo

Assessment of heavy metal pollution in coastal surface sediments of the Mersin Bay, Northeastern Mediterranean Sea.

ÖZGÜR ÖZBAY

Heavy metals accumulated in the sediment constitute a potential source of pollution having a higher pollutant load than the overlying seawater. In order to determine anthropogenic impacts on the heavy metal enrichment and contamination in surface sediments, either reference/background values of the metals in the pristine condition or reference metal values of the earth’s crust are widely used. In this study, the metal pollution indices Enrichment Factor, Geoaccumulation Index, Contamination Factor and Pollution Load Index were used to determine the levels and sources of metal pollution (Chromi ...Daha fazlası

Makale 2024 International Journal of Environmental Science and Technology21 , pp. 8 - 884 33 Görüntülenme Ambargo Kalkış : 30.01.2029

Erişime Açık

The effects of fish oil replacement by vegetable oils on growth performance and fatty acid profile of rainbow trout: Re-feeding with fish oil finishing diet improved the fatty acid composition

ENGİN KENAN

The present study aimed to demonstrate the effects of feeding vegetable oil (VO)-based diets and their blends on growth, feed utilization and fatty acid (FA) profile in rainbow trout, Oncorhynchus mykiss. Juveniles were fed five experimental diets in which dietary fish oil (FO diet containing anchovy oil) was totally or partially replaced by cottonseed oil (CSO), canola oil (CO), MIX1 (50% FO, 25% CSO and 25% CO) and MIX2 (50% CSO and 50% CO) in a grow-out period for 12 weeks. Afterwards, all fish were switched to a diet containing 100% FO diet for a further 12 weeks to determine the progressi ...Daha fazlası

Makale 2018 Aquaculture ( 488 ) , pp. 1 - 133 23 Görüntülenme