this experiment was conducted in international researchery institute of sturgeon fishes shahid  dadman. the basal diet contained fish meal as protein source (cp=40%). five diets were supplemented with 5 graded levels of methionine, (0, 0.5,1 ,1.5, 2% met per kg diet) . each diet was randomly assigned to triplicate groups of 195 juvenile huso huso (initial weight 31.9± 2.8) in fiftin 500-l circu...

Using prebiotics as functional ingredients in aquafeed is an emerging approach to prevent disease and improve fish production. This study explored the effect of supplementing with selenium-enriched prebiotic on growth performance, plasma lysozyme activity, oxidative enzymes activities various tissues rainbow trout, Oncorhynchus mykiss. The scale intestinal microbiomes were also characterized. A...

This study aimed to evaluate the effects of dietary bile acids on growth performance, feed utilization, body composition, digestive enzyme activity, and related gene expression in juvenile leopard coral grouper ( Plectropomus leopardus ). Five diets with varying levels (0, 0.15, 0.3, 0.45 0.6%) were formulated each diet was fed triplicate groups 15 fish (13.14 ± 0.14 g) for ten weeks. Results s...

Abstract Black scabbardfish, Aphanopus carbo, is a commercially important species that takes distant migrations throughout its life cycle. Sex steroids were measured by radioimmunoassay in the blood plasma of specimens caught off Madeira Archipelago and mainland Portugal to link this migratory path with reproductive Furthermore, pilot study using Mozambique tilapia (Oreochromis mossambicus) was...

Abstract At present, large yellow croaker, Larimichthys crocea , a carnivorous fish ranked fifth in aquaculture production among marine finfishes the world, still relies on raw diet because formulated feed alone is not able to sustain rapid growth of fish. The present study evaluated growth, utilization efficiency, body composition and antioxidant capacity croaker fed diets containing four prot...

Red king crab (RKC) has become a valuable resource, and most of this fishery operates in quota-regulated area (QRA) east 26°E. West the QRA, free (FFA) is established to limit further migration. Today, juvenile RKCs from FFA are not utilized. This study investigated morphological quality parameters adult (≥800 g) after live holding (LH) 23 months starting juveniles (on average 500 g). During LH...

The effects of various feeding ratios on the growth, body composition, and blood chemistry juvenile mandarin fish Siniperca scherzeri (initial weight 9.6 g) were examined in recirculating freshwater system equipped with 21, 300 L tanks at 20 per tank. triplicate groups seven treatments prepared: 100% (control), 95%, 90%, 85%, 80%, 75%, 70% satiation. feed amount control group was determined by ...

A 56-day feeding trial was undertaken to assess the ef-fects of housefly maggots (HM) forms (dried and fresh) as protein sources on growth, feed efficiency, body indices Oreo-chromis niloticus finger-lings. control diet (T0) contained 300 g/kg fish-meal (without HM). Two practical diets with same formula were prepared dried HM (T1) fresh (T2) where 66 % fishmeal replaced. Di-ets fed triplicate ...

The lipid-lowering activity of microencapsulated and nonmicroencapsulated Hibiscus sabdariffa L. powder fractions in rats rendered hyperlipidemic by a hyperlipid diet (HLD) was determined. Dried calyces H. were finely ground fractionated on sieve column to retain particle sizes ϕ < 315 µm, with maltodextrin (MD). Rats randomly divided into four groups: normal control group, group (negative g...