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... Parachanna obscura is the most common African Channidae. Various studies are being conducted on its biology and ecology. It lives in fresh water in quiet and muddy areas. It has accessory respiratory organs allowing it to live in hypoxic environment. It has a varied diet and feeds on fish, remains of fish, insects, other invertebrates and plant detritus. It is a species with iteroparous asynchrono ...
Ctenopharyngodon idella; Hypophthalmichthys molitrix; Rotifera; algae; carnivores; diet; fingerlings; fish feeding; fish fry; fish larvae; macrophytes; nauplii; plankton
Abstract:
... The diets of silver carp and grass carp have been studied in their early living stages. It resulted that these two species change their feeding habits with age growth. Larvae and free living fry are carnivores since their diet is dominated from animal living beings of plankton. The fingerlings had a mixed feeding regime, but in this stage appears the tendency to consume the vegetal components with ...
... The present study was aimed to address the possible evaluation of Azadirachta indica (neem) leaf-supplemented diets on innate immune response in Asian seabass, Lates calcarifer fingerlings against Vibrio harveyi infection. Fish were fed for two weeks diets containing six graded levels of neem leaf at 0 g, 1 g, 2 g, 3 g, 4 g and 5 g per kg feed. Fish fed neem leaf-supplemented diet displayed signif ...
... The present study investigated the acute toxicity, sub-lethal toxicity and biochemical response of naphthalene in fingerlings of milkfish Chanos chanos. The 96 h acute toxicity LC50 values for C. chanos exposed to naphthalene was 5.18 μg l(-1). The estimated no observed effect concentration and lowest observed effect concentration values for naphthalene in C. chanos were 0.42 and 0.69 μg l(-1) res ...
Argyrosomus japonicus; barium; captive animals; environmental factors; fingerlings; genetics; habitat preferences; magnesium; mass spectrometry; otoliths; rearing; salinity; strontium; temperature
Abstract:
... Otolith chemistry is widely used to understand patterns of fish movement and habitat use, with significant progress made in understanding the influence of environmental factors on otolith elemental uptake. However, few studies consider the interactive effect that environmental and genetic influences have on otolith chemistry. This study assessed the influence of salinity, temperature, and genetics ...
... Vitamin E, a potent antioxidant consisting of four isomers each (α, β, γ, δ) of tocopherol (T) and tocotrienol (T3), is found naturally in plant oils at different concentrations. In this study, four semi-purified isonitrogenous and isolipidic (10 %) diets containing canola oil, cold-pressed soybean oil, wheat germ oil, or palm fatty acid distillates (PFAD) as the sole vitamin E source were fed to ...
... A huge amount of kernel cake, which contains a variety of toxins including phorbol esters (tumor promoters), is projected to be generated yearly in the near future by the Jatropha biodiesel industry. We showed that the kernel cake strongly inhibited plant seed germination and root growth and was highly toxic to carp fingerlings, even though phorbol esters were undetectable by HPLC. Therefore it mu ...
... Largemouth bass (LMB) Micropterus salmoides fry do not accept prepared diets at first feeding. Fry are initially reared in fertilized ponds on natural live foods until large enough to be feed trained. Unpredictable weather patterns and depletion of natural forages can affect nursery pond survival. A series of experiments was conducted to investigate the use of Artemia nauplii prepared diets and op ...
Catla catla; DNA; RNA; arginine; crude protein; digestible energy; experimental diets; feed conversion; fingerlings; fish feeding; protein deposition; protein efficiency ratio; proteins; regression analysis; weight gain
Abstract:
... Dietary arginine requirement of fingerling Catla catla (3.55 ± 0.05 cm; 0.61 ± 0.02 g) was determined by feeding casein–gelatin‐based isonitrogenous (33% crude protein) and isocaloric (3.40 kcal/g digestible energy) amino acid test diets containing six graded levels of l‐arginine (1, 1.25, 1.5, 1.75, 2, and 2.25% dry diet) for 12 wk. Maximum absolute weight gain (6.93 g/fish), protein efficiency r ...
... This study examined the effects of substituting fish oil and fish meal with a blend of alpha-linolenic acid (ALA, 18:3 n−3) rich vegetable oils (14%, w/w) and defatted poultry meal (34%, w/w) in a formulated diet, on growth and tissue fatty acid profiles in barramundi fingerlings. Results indicated that on average, while the ALA levels of the barramundi liver and fillet increased with increasing d ...
Heteropneustes fossilis; arginine; ash content; body protein; catfish; dietary protein; experimental diets; feed conversion; fingerlings; fish feeding; lipid content; liveweight gain; protein content; protein deposition; proteins; regression analysis
Abstract:
... An 8-week feeding trial was conducted to determine the dietary arginine requirement of fingerling Indian catfish, Heteropneustes fossilis (6.25 ± 1.30 cm, 4.8 ± 0.65 g). Six isonitrogenous (400 g Kg⁻¹) and isoenergetic (17.90 kJ g⁻¹) amino acid test diets were formulated with gradation of 2.5 g Kg⁻¹ containing graded levels of L-arginine (8.5–21.0 g Kg⁻¹, dry diet). Fish were randomly stocked in t ...
... In order to determine the dietary isoleucine requirement of fingerling catla, Catla catla (4.25 ± 0.15 cm, 0.61 ± 0.04 g), six isonitrogenous (33.0 % crude protein) and isocaloric (13.7 kJ/g digestible energy) amino acid test diets containing casein, gelatin and L-crystalline amino acids with graded levels of isoleucine (0.5, 0.75, 1.0, 1.25, 1.5 and 1.75 % of the dry diet) were prepared. Triplica ...
Catla catla; DNA; RNA; carcass composition; crude protein; dietary protein; digestible energy; feed conversion; fingerlings; fish culture; liveweight gain; lysine; nutrient requirements; protein deposition; regression analysis; water troughs
Abstract:
... A 12-week experiment was conducted to quantify dietary lysine requirement of fingerling Catla catla (3.65 ± 0.05 cm; 0.58 ± 0.02 g) by feeding casein–gelatine-based diets (33.0 % crude protein; 14.3 kJ/g digestible energy) with six levels of L-lysine (1.25, 1.50, 1.75, 2.00, 2.25 and 2.50 % dry diet). The experiment was conducted in eighteen 70-L indoor polyvinyl circular troughs provided with a w ...
... Artificial chemical marking of calcified structures, such as otoliths, has emerged as a powerful method to assess stocking success and determine connectivity patterns in freshwater and marine systems. Although transgenerational and larval immersion methods have been validated, dietary transmission of enriched stable isotopes to calcified structures would allow minimal handling of animals and reduc ...
... Ammonia is one of the most common pollutants in aquaculture systems and its elevated concentration in surface water is a critical concern in fish larvae production. The purpose of this study was to assess the effects of un-ionized ammonia (NH ₃) on hatch success of fertilized eggs of silver carp Hypophthalmichthys molitrix and bighead carp Hypophthalmichthys nobilis , two ecologically and commerci ...
age structure; fingerlings; global warming; Sander lucioperca; summer; fisheries; juveniles; Black Sea
Abstract:
... Data on the age and size dynamics, linear and weight growth, and feeding of zander Stizostedion lucioperca collected in the Rybinsk Reservoir in 1954–2010 were generalized. The main factors determining the numbers of zander population and causing changes in its structural indices are the intensity of fishery and feeding conditions. Beginning from the mid-1990s, commercial load considerably exceeds ...
Trichogaster trichopterus; dietary fat; dietary protein; digestibility; energy; feed conversion; fingerlings; fish culture; nutrient retention; rearing; specific growth rate; tanks; weight gain
Abstract:
... Nine semi‐purified diets were prepared with three levels each of protein (300, 350 and 400 g/kg) and lipid (60, 80 and 100 g/kg) and fed ad libitum to Trichogaster trichopterus fingerlings (0.61 ± 0.03 g) in triplicate groups (10 fish/replicate) for 90 days to determine optimum dietary protein and lipid levels. Twenty‐seven flow‐through fibre‐reinforced plastic tanks (200 l capacity each with 100 ...
Aeromonas hydrophila; Labeo rohita; blood serum; carp; diet; disease resistance; feed conversion; fingerlings; growth performance; lysozyme; myeloperoxidase; phagocytosis; protein efficiency ratio; specific growth rate; weight gain
Abstract:
... The present study evaluated the effect of dietary andrographolide (EC 50%) on growth, non-specific immune parameters and disease resistance against Aeromonas hydrophila infection in Indian major carp, Labeo rohita fingerlings. Fishes were fed with formulated diet containing andrographolide as T0 (0.00%), T1 (0.05%), T2 (0.10%), T3 (0.20%), T4 (0.40%) and T5 (0.80%) for 42 days. Fishes were challen ...
... Three 28% protein feeds (premium, standard, or a low-cost diet) were fed to channel catfish in a pond study to compare growth, production, and costs as a follow up to similar work with 32% protein feeds. Twelve 0.1-ha earthen ponds at the University of Arkansas at Pine Bluff (UAPB) Aquaculture Research Station were stocked with carryover fish (0.39 kg mean weight) at 5,860 fish/ha and fingerling c ...
Micropterus salmoides; bass; fingerlings; foods; industry; profits and margins; recirculating aquaculture systems
Abstract:
... Demand for food size and trophy largemouth bass, Micropterus salmoides, is steadily increasing. However, largemouth bass, a carnivorous species, are more difficult to feed habituate than other commercially produced fish. Improving current feed habituation techniques to increase the percentage of fingerlings successfully feed habituated would increase profits, productivity and efficiency, and avail ...