This study was conducted to investigate the effect of fish protein hydrolysate on growth performance, insulin-like factor I (IGF-I) levels and expression liver IGF-I mRNA in juvenile Japanese flounder (Paralichthys olivaceus). Fish produced by enzymatic (alcalase flavourzyme) treatment size-fractionated ultrafiltration. The permeate after ultrafiltration (UF) non-ultrafiltered were tested as feed ingredients using high plant diets. meal used control diet (FM). feeding trial lasted for 60...

Abstract Throughout the evolution of fish nutrition science, importance dietary arachidonic acid (ARA, 20:4n‐6) has been somewhat overlooked, likely due to polarizing research focus on docosahexaenoic (DHA, 22:6n‐3) and eicosapentaenoic (EPA, 20:5n‐3) acids. Nevertheless, especially during past two decades, increasing attention paid requirements functions ARA in nutrition, a number relevant studies have now conducted series species, including both marine freshwater species. Those revealed...

Four experimental diets were fed to turbot examine the effect of fish hydrolysate and ultra-filtered on growth performance, feed utilization non-specific immune response. Fish was produced by enzymatic treatment size fractionated using ultra-filtration (UF). The permeate (molecular weight <1000 Da) after UF non-ultra-filtered (NUF) tested as ingredients. Diets UF1, UF2 contained 3.7%, 1.2% replace meal protein respectively. NUF identical in composition except that molecular diet. used...

Long‐chain polyunsaturated fatty acids (LC‐PUFA) play key roles in sex steroid hormone synthesis fish. Regarding docosahexaenoic acid (DHA), currently the regulating effects were mostly evaluated female fish rather than males. This study aimed to investigate DHA on production male Chinese tongue sole. Three experimental diets prepared, containing different levels: a control (C) group (5.16% of total [TFA]), low (DHA‐L, 8.93%), and high (DHA‐H, 16.47%). A 58‐day feeding experiment was...

This study was to investigate the in vitro antimicrobial activity of fish protein hydrolysate (FPH) against Vibrio harveyi , V. anguillarum and scophthalmi as well nonspecific immunity, intestinal microbiota, disease resistance turbot. FPH prepared from Pollock. The antibacterial measured by agar diffusion, turbidometric assay, plate count. feeding trial performed effect on turbot after three diets containing a high level meal (FM), soybean (SM), 100 g/kg FPH. Agar diffusion showed clearest...

Chronic hypoxia is a common and harmful stress in aquaculture. However, the effects of chronic on nutrients metabolism, muscle quality three hifα isoforms expressions marine fish species are unknown. In present experiment, tiger puffer was divided into normoxia group (NO, dissolved oxygen [DO] = 6.5 ± 0.5 mg/L) (CH, DO 3.5 for 8 weeks. The growth performance, nutrient texture, amino acid fatty compositions were measured. results showed that reduced weight gain, viscerosomatic index, crude...

The intention of the study was to investigate effect ultrafiltered fish protein hydrolysate (UF) level on growth, feed utilization, apparent digestibility coefficients and proximal intestine peptide transporter 1 (PepT1) mRNA for juvenile turbot (Scophthalmus maximus L.). Experimental diets (UF-0, UF-5, UF-10, UF-15 UF-20) were prepared containing about 68% plant protein, meal was, respectively, replaced by 0%, 5%, 10%, 15% 20% UF dietary protein. Diet PP contained 78% diet CAA 10%...

This study aimed to evaluate effects of fish protein hydrolysate (FPH) supplementation in plant based diets for tiger puffer (Takifugu rubripes) on growth performance, intestinal peptide and amino acid transporters, the expression synthesis-related genes texture parameters muscle. Tiger were fed negative positive control with 280 400 g/kg meal (LFM HFM) or test containing 52 104 FPH supplement as 60 120 (FPH6 FPH12) substitute 56 days. Each diet was randomly triplicate groups 30 per tank....

Seven isonitrogenous and isoenergetic experimental diets were formulated to investigate the effect of low molecular weight fish protein hydrolysate (FPH) in on growth performance, feed utilization liver IGF-I mRNA levels Japanese flounder (38.80 ± 1.11 g) fed with high plant diets. Fish meal was, respectively, replaced by 6% (FPH6), 11% (FPH11), 16% (FPH16), 21% (FPH21), 26% (FPH26) FPH total dietary protein. contained a constant level (690 g kg−1) from soybean meal. As positive control...

The effects of fish protein hydrolysate (FPH) on growth, peptide and amino acid (AA) transporters, postprandial free AA related gene expression IGF-1/AKT pathway were evaluated in turbot (Scophthalmus maximus). Three diets formulated to contain the same low level fishmeal; meanwhile 0, 45 180 g/kg FPH were, respectively, supplemented FF (FPH-free), FL (FPH-Low) FH (FPH-High) diets. Fish fed diet improved growth compared with other groups. For PepT1, B0AT1, CAT1 PAT1 mRNA levels proximal or...

Abstract Taurine (TAU) plays important roles in the metabolism of bile acids, cholesterol and lipids. However, little relevant information has been available fish where TAU identified as a conditionally essential nutrient. The present study aimed to investigate effects dietary on lipids tiger puffer, which is both an aquaculture species good research model, having unique lipid storage pattern. An 8-week feeding trial was conducted flow-through seawater system. Three experimental diets...

A 56-day feeding trial was conducted in a flow-through seawater system to investigate the effects of lysophosphatidylcholine (LPC) on growth performance and lipid metabolism turbot. Four experimental diets were prepared, differing only LPC supplementation, namely, 0 (LPC-0, control), 0.1 (LPC-0.1), 0.25 (LPC-0.25), 0.5% (LPC-0.5) dry matter. Each diet randomly fed triplicate tanks. LPC-0.1 LPC-0.25 led significantly higher weight gain than control diet, highest observed LPC-0.1. Compared...