This study was done to evaluate the effect of different quercetin levels on growth performance, immune responses, antioxidant status, serum biochemical factors, and high-temperature stress responses in common carp (Cyprinus carpio). A total number 216 with an average weight 27.21 ± 53 g were divided into 12 tanks (four treatments × three replications) fed 0 mg/kg (T0), 200 (T1), 400 (T2), 600 (T3) for 60 days. There significant differences highest final body (FBW), gain (WG), specific rate...

This study assessed the effects of thymol and yeast Saccharomyces cerevisiae on growth performance, antioxidant capacity immunological responses gut transcripts in rainbow trout, Oncorhynchus mykiss. Two hundred seventy fish (6.62 ± 0.18 g) were distributed 18 aquaria (15 per aquarium) as a 2 × 3 factorial design. The fed diets containing 0 1 108 cfu/g 0, 250 500 mg/kg for 60 days. results showed that dietary supplementation led to significantly improved weight gain feed efficiency (p <...

Abstract In this study, the effect of artemisia ( Artemisia annua ) leaves extract (ALE) on immune system, growth performance and antioxidant capacity common carp Cyprinus carpio was investigated. Fish with initial weight (90.32 ± 1.12 g) were fed various levels ALE (0, 0.5, 1 1.5 g/kg) for 8 weeks. The results showed that (FW, WG, SGR, PER, LER) in fish g/kg increased significantly P <0.05) feed conversion ratio (FCR) improved comparison to control group <0.05). Skin mucus total...

This study aimed to investigate the effects of dietary licorice (Glycyrrhiza glabra) on growth, lipid metabolism, antioxidant and immune response, stress resistance common carp. The fish (12.14 ± 0.39 g) were fed diets containing 0 (control), 10 (G1), 20 (G2) 30 (G3) g/kg root powder for 60 days then subjected 3-hr crowding (40 kg/m3). highest final weight catalase activity lowest FCR cholesterol levels observed in 10-30 inclusions. lipase LDL triglyceride recorded G2 G3 groups. Serum...

Herbal feed additives have benefits in aquaculture, as they can improve growth performance, welfare, and stress resistance. Hence, the effects of dietary Prosopis farcta extract (PFE) on parameters, digestive enzyme activity, antioxidant defense, innate immunity responses, resistance to ammonia common carp, Cyprinus carpio, were studied. Fish (15.14 ± 0.72 g) fed diets without PFE (PFE0) or those fortified with 0.5% (PFE0.5), 1% (PFE1), 2% (PFE2) for 60 days then subjected 24 h. The rate,...

Abstract The effects of dietary Nano selenium (Se) and garlic extract on the performance grass carp under different stocking densities were examined. Fish (2.10 ± 0.09 g) stocked into 18 tanks: fish fed a diet supplemented with 1 mg Se g kg −1 (Diet1) or 2 (Diet2) reared at low (LD, 24 per tank), medium (MD, 48 high (HD, 96 tank) densities. After 60 days, growth was highest in Diet2‐LD Diet2‐MD groups lowest Diet1‐HD group. Results showed an extreme density induced stress responses. At all...

This study is aimed at evaluating the effects of stocking densities and dietary protein levels in biofloc system on performance common carp. Fish (12.09 ± 0.99 g) were transferred to 15 tanks: fish reared 10 kg/m3 as medium density fed 35% (MD35) or 25% (MD25) 20 high (HD35) (HD25) control MD clear water. After 60 days, subjected crowding stress (80 kg/m3) for 24 h. The growth was highest MD35. feed conversion ratio lower MD35 compared HD groups. amylase, lipase, protease, superoxide...

This study aimed at assessing the effects of dietary Pennyroyal essential oil (PE) supplementation on growth performance, digestive enzymes, and stress, antioxidant, immunological responses to an acute stress. Four experimental diets containing 0 (C), 100 (100PE), 250 (250PE), 500 (500PE) mg/kg PE were used in this experiment. The fish fed with these for eight weeks, followed by a 3-h crowding stress (40 kg/m3) 24-h recovery. Growth intestinal amylase, lipase, protease activities, plasma...

Herbal extracts have been successfully used as feed additives in fish culture with attractive growth‐promoting, immunostimulant, antimicrobial, and antioxidant properties for several shellfish species. Therefore, we designed a feeding trial to assess the impacts of dietary incorporation Perovskia abrotanoides extract (PAE) on common carp ( Cyprinus carpio ). For this purpose, five isonitrogenous (35% protein) isocaloric (~4,000 kcal/kg) diets supplied by supplementing PAE at varying...

Abstract The aim of the present study was to assess effects dietary supplementation with Lactobacillus salivarius (LS) ATCC 11741 and lutein (LU) on immunological, antioxidant, growth responses, resistance against Yersinia ruckeri infection in rainbow trout ( Oncorhynchus mykiss ). There were seven experimental diets containing un-supplemented diet (CTL), L. at 1 × 106 (LS6) 10 8 (LS8) CFU/g, 50 (LU50) 150 (LU150) mg/kg, 6 CFU/g plus g/kg (LS6+LU50), (LS8+LU150). These provided fish (N= 735;...

The present study assessed the effects of dietary yeast, Saccharomyces cerevisiae , and costmary, Tanacetum balsamita essential oil on growth performance, biochemical parameters, disease resistance Nile tilapia, Oreochromis niloticus . Four diets containing 1 g/kg yeast (Sc), 0.1 costmary (Tb), + (Sc Tb), without Sc Tb (control) were formulated fed (2.5% per day) to triplicate groups fish (average: 9.8 g; SD : 0.12) for 8 weeks. Each replicate was a 70‐L tank, stocked with 25 fish. Then,...

This study investigated the effects of dietary arginine supplementation on plasma ammonia and urea levels, immune- antioxidant-related gene expressions common carp (Cyprinus carpio), exposed to ambient ammonia. Fish (10.5 ± 0.74 g) were fed diets containing (0: control diet, 0.25: 0.25Arg 0.5%: 0.5Arg) for 14 days then subjected exposure three hours. The results showed that significantly decreased level, whereas increased level. Arginine up-regulated head kidney il1b, il10, tnfa liver sod,...