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I. Biasato; G. Chemello; S. Bellezza Oddon; I. Ferrocino; M.R. Corvaglia; C. Caimi; A. Resconi; A. Paul; M. van Spankeren; M.T. Capucchio; E. Colombino; L. Cocolin; F. Gai; A. Schiavone; L. Gasco
... The effects of including Hermetia illucens (HI) meal in rainbow trout diets have been widely characterized, but data related to its utilization in low-fishmeal (FM) diets are quite scarce. The current research investigated the impact of HI meal inclusion in low-FM diets for rainbow trout by assessing fish growth performance, nutrient digestibility, histomorphological traits of intestine and main o ...
Huso huso; blood; blood glucose; body composition; body weight; cholesterol; condition factor; cortisol; energy; feeds; food deprivation; glucose; hemoglobin; intestines; juveniles; lactic acid; liver; metabolites; mucosa; muscles; oxygen consumption; protein content; proximate composition; specific growth rate; starvation; sturgeon; technology; triacylglycerols
Abstract:
... A 4-week trial was conducted to investigate the influence of food deprivation on the growth, body composition, biochemical and hematological parameters in juvenile great sturgeon (Huso huso) as well as physiological responses to acute handling stress. Fish with an average weight of 78.27 ± 0.2 g (mean ± S.E) were assigned to two feeding regimes: fed (control) and starved groups. The final weight i ...
... The present study demonstrates the effects of varying dietary protein levels on reproductive indices, energy deposition, steroid hormones and oocyte status of hoven’s carp Leptobarbus hoevenii female broodstock. Eighty-one broodstock (1.86 ± 0.02 kg) were randomly distributed into nine tanks representing three dietary treatments; 350 g/kg (P35), 400 g/kg (P40) and 450 g/kg (P45) in triplicates. Fe ...
Macrobrachium rosenbergii; allometry; body weight; condition factor; diet; feed conversion; feeds; juveniles; labor; probiotics; shrimp; specific growth rate; survival rate; technology; water quality; weight gain
Abstract:
... The effect of stocking density on growth, production, feed utilization and condition factor of probiotic treated Macrobrachium rosenbergii were analyzed in the present study. Juvenile prawn of weight 3.48 ± 1.4 g was stocked at the densities of 2, 3, 4 and 5 individuals/m² respectively in T1, T2, T3 and T4. A supplementary diet containing 32% protein was used with the commercial feed probiotics Zy ...
Scophthalmus maximus; Tenacibaculum maritimum; adverse effects; aquaculture; bacteria; body composition; condition factor; diet; digestive tract; energy content; enteritis; feed conversion; feeds; fish meal; growth performance; health status; hematocrit; hepatosomatic index; juveniles; lipids; pathogens; probiotics; saponins; soybean meal; spleen; turbot; weight gain
Abstract:
... In today's aquaculture, the cost‐intensive and scarce fishmeal is increasingly replaced by plant‐based feedstuff such as soybean meal (SBM). However, SBM contains saponins which can have adverse effects on fish's digestive tract potentially culminating in severe enteritis. In a 60 day feeding trial we studied the use of autochthonous bacteria as probiotics upon SBM supplementation on juvenile turb ...
Arthrospira; Morone chrysops; Morone saxatilis; Schizochytrium limacinum; algae; aquariums; body fat; condition factor; crude fat; crude protein; dietary fat; docosahexaenoic acid; experimental diets; fatty acid composition; feed conversion; feeds; fish meal; fish oils; freshwater; hepatosomatic index; heterotrophs; hybrids; juveniles; menhaden; overfeeding; proximate composition; soy protein concentrate; tissues; weight gain
Abstract:
... A 6-week growth trial was conducted to assess the replacement of fishmeal (FM), soy protein concentrate (SPC) and fish oil (FO) by Arthrospira sp. and Schizochytrium limacinum meals in diets for hybrid striped bass (Morone chrysops × M. saxatilis) juveniles of 10.6 ± 0.2 g initial individual weight (±standard deviation). A control diet was formulated with equivalent contributions of FM and SPC to ...
Aaron M. Watson; Fabio Casu; Daniel W. Bearden; Justin Yost; Michael R. Denson; T. Gibson Gaylord; Paul Anderson; Paul A. Sandifer; John W. Leffler; Frederic T. Barrows
... A twelve-week feeding trial was conducted to examine potential metabolic and gene expression changes that occur in juvenile red drum, Sciaenops ocellatus, fed diets with increasing soybean meal inclusion. Significant reduction in fish performance characteristics (feed consumption, weight gain, final weight) was observed within the soybean meal based diets as soybean meal level increased (R, linear ...
Lophiosilurus alexandri; biomass; catfish; condition factor; feeds; food conversion; intestines; nauplii; salinity; water quality; weight gain
Abstract:
... The objective of the study was to verify the combination of live and frozen Artemia nauplii, in different salinized water, and its influence in growth and survival of the catfish Lophiosilurus alexandri (Steindachner, 1876) larvae. Larvae were exposed to a combination of two feeds and two different salinities: live Artemia nauplii + 0‰ salinity in the water; live Artemia nauplii + 2‰ salinity in t ...
Paralichthys olivaceus; body weight; condition factor; dose response; energy content; feed conversion; feeds; flounder; juveniles; lipids; model validation; models; regression analysis; weight gain
Abstract:
... Two feeding trials using different commercial feeds and different fish sizes were conducted to compare model performance of various regression models on the estimation of optimum feeding rates (OFR; % BW/day) for juvenile olive flounder. Six feeding rates ranging from 1% to 11% in trial I and another six feeding rates ranging from 1% to 6% in trial II were tested. Final body weight, weight gain, f ...
Salmo salar; body weight; condition factor; feeding methods; feeds; high energy diet; industry; lipid content; lipids; muscles; slaughter; smolts
Abstract:
... Two isoenergetic feeding strategies, with emphasis on the grow-out stage (> 1 kg), with dietary high (HP > 1.1) and low protein-to-lipid ratio (LP < 1.0) were tested by using year-old smolt (S1) and under-year-old smolt (S0) Atlantic salmon in two large-scale trials, respectively, and in one small-scale experiment using S1 smolt. This was done to investigate the dietary influence on slaughter yiel ...
Salmo salar; Scenedesmus; aquaculture industry; condition factor; diet; digestibility; energy; feed conversion; feeds; fish; fish meal; hardness; ingredients; microalgae; nutrient retention; omega-3 fatty acids; polyunsaturated fatty acids; protein content; protein efficiency ratio; specific growth rate; tanks; weight gain
Abstract:
... Salmonid feeds can be formulated with high quality microalgae to maintain sustainability in the aquaculture industry. But, the suitability of different microalgae species as potential feed ingredients needs to be documented to enable ready acceptance by the farming industry. The aim of the present study is to investigate the potential of the microalga Scenedesmus sp. as a major ingredient in low f ...
European Union; Oncorhynchus mykiss; condition factor; crude protein; feed conversion; feeds; fillets; fish; freshwater; hepatosomatic index; protein efficiency ratio; satiety; slaughter; soybean meal; soybeans; specific growth rate; stocking rate; tanks
Abstract:
... Soybean meal (SBM) is widely used in aqua feed products. In the European Union, only non‐genetically modified (non‐GM) SBM is accepted. However, global production of non‐GM soybeans is declining and is limiting its utilization in aqua feeds. Therefore, non‐GM SBM alternatives are required. In this study, guar meal was evaluated as a substitute for non‐GM SBM in test feeds for rainbow trout (Oncorh ...
Epinephelus fuscoguttatus; body weight; condition factor; crude protein; digestibility; feed conversion; feeds; fiberglass; fish meal; grouper; hepatosomatic index; hybrids; juveniles; lipid content; lipids; regression analysis; satiety; soy protein concentrate; specific growth rate
Abstract:
... Hybrid grouper juveniles (body weight, 6.1 ± 0.7 g) (brown‐marbled grouper, Epinephelus fuscoguttatus × giant grouper, E. lanceolatus) were fed with six isoproteic (50% crude protein) and isolipidic (12% crude lipid) feeds containing different levels of soy protein concentrate (SPC) in replacement of fish meal (SPC at 20%, 30%, 40%, 50% and 60% protein) and control feed (SPC0) for 6 weeks. Hybrid ...
... An experiment was conducted to investigate the effects of Spirulina platensis (SP) on growth, fillet composition, and intestinal, skin, and gill mucosal antioxidants of rainbow trout, Oncorhynchus mykiss (initial weight 17.18 ± 0.59 g). One-hundred and thirty-five fish were randomly distributed among nine cement tanks (1.8 m × 022 m × 0.35 m) with 15 fish per tank. Three isonitrogenous (37.8% crud ...
... Aqua feeds traditionally rely on fishmeal as a protein source, which is costly and unsustainable. A new feed was formulated in the study with Baltic Sea sourced decontaminated fishmeal, Mytilus edulis and Saccharomyces cerevisiae, and given to Arctic char (Salvelinus alpinus) for ten months. The diet-induced changes on metabolic profile in fish plasma, liver, and muscle were studied relative to a ...
... Two trials with Atlantic salmon (Salmo salar) were conducted to evaluate the potential of krill meal to improve feed intake. In the first experiment, after transfer to sea water, salmon smolts were fed diets added 75 or 150 g kg⁻¹ Antarctic krill meal in substitution for fish meal for 13 weeks. The apparent digestibility coefficient for crude protein and the majority of the amino acids was signifi ...
... Bacillus amyloliquefaciens has attracted attention as a probiotic in aquaculture due to its immunostimulatory activity against pathogenic infection. Xylanases are extensively used in animal feed to degrade plant ingredients, enhancing nutrient utilization and increasing the growth rate of various animals. In the present study, the effects of dietary supplementation with B. amyloliquefaciens and xy ...
fish farms; immunoglobulin M; feeds; lipid composition; hepatosomatic index; gelatin; fish feeding; rapeseed; juveniles; farmed fish; Oreochromis niloticus; leukocytes; body fat; protein sources; feed conversion; genetic improvement; superoxide dismutase; cottonseed; protein efficiency ratio; condition factor; casein; growth performance; lysozyme; weight gain; soybeans; regression analysis; erythrocytes; feed prices
Abstract:
... This study evaluated the effect of dietary protein level on growth performance and haemato-immunological parameters of juvenile genetically improved farm tilapia, Oreochromis niloticus, fed five iso-caloric diets of dietary protein levels 25–45 %, formulated using white fish, casein, gelatine, soybean, cottonseed and rapeseed meals as protein sources. The diets influenced the significant increase ...
Cyprinus carpio; adipocytes; blood; carp; condition factor; cytoplasm; diet; enterocytes; feed conversion; feeds; food conversion; hepatocytes; hepatopancreas; histology; liver; normal values; proteins; specific growth rate; tanks; triacylglycerols; water flow; weight gain
Abstract:
... The study was carried out to examine morphological and physiological effects of different levels of fat in compound extruded feed for carp. A 90 days experiment was performed in tanks with water flow 0.34 L min⁻¹, stocked each with 29 specimens of carp, average weight 15.4 ± 4.2 g. The fish was fed 3 diets containing 38 % protein and 8, 12 or 16 % of fat (feed L8, L12, and L16, respectively). Body ...
Heteropneustes fossilis; body composition; catfish; condition factor; dietary protein; feed conversion; feeds; fingerlings; fish feeding; hemoglobin; hepatosomatic index; histidine; oxygen; protein content; regression analysis; salinity; satiety; stinging; water temperature
Abstract:
... Heteropneustes fossilis is distributed in most of the Southeast Asian countries. It is a promising species for aquaculture due to its high protein and iron content, ability to withstand shifts in salinity and temperature, and survival in oxygen depleted water. In view of the above, this study was undertaken to evaluate the effects of varying levels of dietary l-histidine on growth, protein gain, h ...