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| Registros recuperados: 501 | |
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| Cahu, Chantal; Zambonino, Jose-luis; Corraze, Genevieve; Coves, Denis. |
| Triplicate groups of juvenile seabass (initial weight of 241 g) were fed during 13 weeks three isonitrogenous experimental diets containing different lipid levels, 12% (LL group), 21% (ML group) and 30% (HL group). At the end of the experiment, fish weight gain was similar among the 3 dietary groups. Intestinal brush border membranes were purified for each dietary group; one part of the brush border fraction was dedicated to enzyme assays, the remaining fraction being used for lipid extraction followed by fatty acid analysis. The fatty acid composition of the brush border membrane differed among the 3 groups, although the 3 experimental diets had the same fatty acid composition. The increase in dietary lipid level resulted in a lowering in (n-3)... |
| Tipo: Text |
Palavras-chave: Membrane lipid; Intestine; Fish; Fatty acids; Dietary lipids; Brush border hydrolases. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-901.pdf |
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| Rocha,Cleber Bastos; Portelinha,Mauro Kaster; Fernandes,João Morato; Britto,Aline Conceição Pfaff de; Piedras,Sérgio Renato Noguez; Pouey,Juvêncio Luís Osório Fernandes. |
| To determine the available phosphorus requirement of pejerrey fish, four semi-purified diets were formulated to contain increasing available phosphorus levels (0.90, 2.7, 5.7 and 8.3 g/kg). Each diet was assigned to groups of 10 fish with average weight of 1.26±0.17 g, distributed into a completely randomized design with four treatments and four replications. Fish were fed at a rate of 10% total biomass four times a day for 60 days. The parameters productive performance, body chemical composition and mineral composition of bones and scales were evaluated. The best productive performance of fingerlings was obtained with the diet containing 4.3 g/kg available phosphorus. The average level of 6.3 g/kg available phosphorus promotes better mineralization of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone; Fish; Food; Growth; Mineral; Nutrition. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000200001 |
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| Garcia,Luciano de Oliveira; Gutiérrez-Espinosa,Mariana; Wásquez-Torres,Walter; Baldisserotto,Bernardo. |
| The objective this study was to evaluate the effects of dietary protein levels in pirapitinga, Piaractus brachypomus, submited to extremely acidic or alkaline pH. Juveniles were fed for 20 days with three diets with different crude protein (CP) levels (25.3, 32.4 and 40.0%) and then separated in five groups (n=10, three replicates each) which were kept in 60 L aquaria and exposed to pH 3.0, 3.5, 7.0, 10, or 10.5. Fish were removed from aquaria when they showed loss of swimming balance, and then blood was collected and plasma separated for measurement of Na+, Cl- and K+ levels. The increase of dietary protein levels (up to 40.0% CP) provided some protection for pirapitinga at pH 3.5 or 10.0 because the time to lose equilibrium increased after acute... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pirapitinga; Fish; Ionoregulation; Extreme pH. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000200017 |
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| Polez,V.L.P.; Moraes,G.; Santos Neto,C.. |
| The exposure of fish to air is normally expected to interfere with the nitrogen excretion process. Hoplias malabaricus and Hoplerythrinus unitaeniatus, two teleost species, display distinct behaviors in response to decreases in natural reservoir water levels, although they may employ similar biochemical strategies. To investigate this point, plasma levels of ammonia, urea, uric acid, and the two urea cycle enzymes, ornithine carbamoyl transferase (OCT) and arginase (ARG), as well as glutamine synthetase (GS) were determined for both species after exposure to air. Plasma ammonia increased gradually during exposure to air, but only H. malabaricus showed increased concentrations of urea. Plasma uric acid remained very low in both fish. Enzymatic activities... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hoplias malabaricus; Hoplerythrinus unitaeniatus; Fish; Urea cycle enzymes; Biochemical adaptation; Air exposure. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000200017 |
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| Furuya,Wilson Massamitu; Graciano,Themis Sakaguti; Vidal,Luiz Vítor Oliveira; Xavier,Tadeu Orlandi; Gongora,Leonardo Dantas; Righetti,José Sérgio; Furuya,Valéria Rossetto Barriviera. |
| This study was conducted to determine the digestible lysine requirements of Nile tilapia fingerlings. Fish (n = 300; average initial weight = 1.44 g) were distributed 15 300-L aquariums, in a completely randomized design with five treatments and three replicates, and fed extruded diets containing 11.3, 13.7, 16.1, 18.4 or 20.8 g/kg of digestible lysine. The arginine:lysine ratio was maintained at 1.3:1. All fish were fed diets containing 281 g/kg of digestible protein and 3,372 kcal digestible energy/kg, hand-fed until apparent satiation. There was no effect of the dietary lysine levels on survival rate, or protein and ash body rates. With increasing levels of lysine in the diet, a quadratic effect on weight gain, feed conversion, protein efficiency ratio,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Fish; Growth; Protein deposition. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300003 |
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| Michelato,Mariana; Furuya,Wilson Massamitu; Graciano,Themis Sakaguti; Vidal,Luiz Vítor Oliveira; Xavier,Tadeu Orlandi; Moura,Lorena Batista de; Furuya,Valéria Rossetto Barriviera. |
| This trial was conducted to determine the dietary digestible methionine + cystine requirement of Nile tilapia (550 to 700 g) based on the ideal protein concept. Six hundred fish were distributed in a completely randomized design with five treatments and four replicates, with 30 fish per experimental unit. The fish were fed diets containing approximately 262 g of digestible protein/kg, 3,040 kcal of digestible energy/kg and 7.90, 9.40, 10.90, 12.40 or 13.90 g of methionine + cystine/kg. The fish were hand-fed three times a day until apparent satiation for 30 days. No effects of dietary methionine + cystine on feed conversion ratio, daily protein deposition, whole body moisture, fillet moisture, crude protein, ether extract and ash, plasmatic HDL and LDL... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acids; Body composition; Fillet yield; Fish; Performance; Plasmatic lipid pattern. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100002 |
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| Freitas,Tiago M. S.; Montag,Luciano F. A.; Barthem,Ronaldo B.. |
| ABSTRACT Fish exhibit morphological, physiological and behavioral specializations which enable them to display different ways to explore the environments and resources. Thus, the aim of this study was to verify how four Auchenipteridae species differ in the distribution, feeding habits and morphological traits: Auchenipterichthys longimanus (Günther, 1864), Auchenipterus nuchalis (Spix & Agassiz, 1829), Tatia intermedia (Steindachner, 1877) and Trachelyopterus galeatus (Linnaeus, 1766). This study was conducted in rivers and bays of the Anapú Basin, Pará State (Brazil), where these species are abundant. Specimens were collected using gillnets, and after caught the stomachs were removed for the contents analyzes. Eighteen morphometric measurements from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Morphology; Diet; Adaptation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100208 |
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| Gomes, Patricia Cristina; UEM; Ribeiro, Ricardo Pereira; UEM; Barrero, Nelson Lopera; UEM; Povh, Jayme Aparecido; UEM; Vargas, Lauro; UEM; Sirol, Rodolfo Nardez; Duke Energy International Geração Paranapanema. |
| Recentemente a produção aquícola brasileira tem apresentado grande progresso. Dentre as espécies nativas cultivadas no Brasil, a piapara (Leporinus elongatus) tem sido amplamente preconizada. Com objetivo de avaliar os programas de repovoamento, foram analisadas a variabilidade e a divergência genética de três estoques de piapara com a técnica de RAPD (Random Amplified Polymorphic). O primeiro estoque pertence à Estação de Aquicultura e Hidrologia da Duke Energy International (A); o segundo, à piscicultura de Rolândia (B) e o terceiro, ao Programa de Repovoamento dos Rios do Paraná (C). Os dez primers para RAPD utilizados produziram 105 fragmentos polimórficos, conferindo um polimorfismo de 98,1% para os três estoques avaliados. A porcentagem de locos... |
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Palavras-chave: 5.05.04.00-2 Reprodução Animal divergência genética; Locos polimórficos; Peixe; RAPD; Reprodutores; Variabilidade genética. genetic divergence; Polymorphic loci; Fish; RAPD; Reproducers; Genetic variability. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4710 |
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| Klingelfus,Tatiane; Costa,Paula Moiana da; Scherer,Marcos; Cestari,Marta Margarete. |
| Abstract Even though aluminum is the third most common element present in the earth's crust, information regarding its toxicity remains scarce. It is known that in certain cases, aluminum is neurotoxic, but its effect in other tissues is unknown. The aim of this work was to analyze the genotoxic potential of aluminum sulfate in kidney tissue of the fish Rhamdia quelen after trophic contamination for 60 days. Sixty four fish were subdivided into the following groups: negative control, 5 mg, 50 mg and 500 mg of aluminum sulfate per kg of fish. Samples of the posterior kidney were taken and prepared to obtain mitotic metaphase, as well as the comet assay. The three types of chromosomal abnormalities (CA) found were categorized as chromatid breaks,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Metal contamination; Chromosomal abnormalities; Comet assay. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400499 |
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| Brehmer, Patrice; Laugier, Thierry; Kantoussan, J.; Galgani, Francois; Mouillot, D.. |
| Ensuring the sustainability of fish resources necessitates understanding their interaction with coastal habitats, which is becoming ever more challenging in the context of ever increasing anthropogenic pressures. The ability of coastal lagoons, exposed to major sources of disturbance, to provide resources and suitable habitats for growth and survival of juvenile fish is especially important. We analysed three lagoons with different ecological statuses and habitat quality on the basis of their eutrophication and ecotoxicity (Trix test) levels. Fish abundances were sampled using fishing and horizontal beaming acoustic surveys with the same protocols in the same year. The relative abundance of Anguilla anguilla, Dicentrarchus labrax or the Mugilidae group was... |
| Tipo: Text |
Palavras-chave: Fish; Shallow water; Ecotoxicity; Lagoon; Habitat quality; Amphidromous. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00148/25963/24083.pdf |
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| Llanes, J.; Toledo, J.; Lazo de la Vega, J. M.. |
| El objetivo de este trabajo fue evaluar el efecto de dos alimentos en el desempeño productivo del bagre africano cultivado en tanque de cemento de 1 m3 durante 50 días. Se utilizaron 600 alevines de Clarias gariepinus (10,0 g de peso medio inicial) distribuidos según diseño completamente aleatorizado en dos tratamientos triplicados (100 alevines/tanque): la dieta comercial de tilapia como control (harina de soya como única fuente de proteína) y otra experimental semihúmeda con 40 % de ensilaje de residuos pesqueros y 60 % del control. Se encontraron diferencias estadísticas en el crecimiento, la conversión del alimento, eficiencia proteica y supervivencia a favor de la dieta experimental. Estos resultados demostraron que fue necesaria la inclusión de... |
| Tipo: Journal Contribution |
Palavras-chave: Fish; Diets; Commercial fisheries. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4623 |
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| Registros recuperados: 501 | |
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