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| Registros recuperados: 32 | |
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| Paixão,Daércio José de Macedo Ribeiro; Brabo,Marcos Ferreira; Soares,Lourdes Marília Oliveira; Campelo,Daniel Abreu Vasconcelos; Veras,Galileu Crovatto. |
| ABSTRACT The influence of feeding frequency on growth performance, batch uniformity, and survival rate of severum (Heros severus) larvae and juveniles was investigated in two experiments. In the first, 200 five-day-old severum larvae with 3.20±0.31 mg and 6.20±0.39 mm were randomly distributed into 20 aquaria (1 L) and fed 500 Artemia nauplii larvae−1 day−1 for 15 days. In the second, 120 severum juveniles, 178.19±33.59 mg and 1.82±0.09 cm, were randomly distributed into 15 aquaria (300 L) and hand-fed a commercial diet (400.0 g kg−1 crude protein and 21.2 kJ g−1 gross energy) until apparent satiety for 30 days. For both experiments, feeding frequencies of one, two, three, four, and five meals day−1 were evaluated. We used four replicates for the first... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Amazon fish; Food management; Growth performance; Nutrition; Ornamental fish. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100156 |
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| Dhert, P.; Lim, L.C.; Candreva, P.; Van Duffel, H.; Sorgeloos, P.. |
| There has been rapid development in the marine foodfish larviculture technology in Europe since the early eighties, especially in the flat fish, turbot and halibut, and the bass and bream species. The most significant improvements in the eighties were the introduction of light control, artificial reproduction techniques, appropriate water treatment and the use of rotifers and <i>Artemia</i> nauplii of specific sizes and in the late eighties and early nineties the quality enhancement of live food organisms using specific enrichment techniques. Present research is focused on the implementation of several microbial techniques to improve the hygiene of live prey and fish. Many of the modern larviculture techniques being used in marine foodfish... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish culture; Ornamental fish. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2933 |
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| Zuanon,Jener Alexandre Sampaio; Carneiro,Antonio Policarpo Souza; Nascimento,Lidiane da Silva; Silva,Donizete Aparecido da; Pontes,Marcelo Duarte; Kanashiro,Márcio Yoshiyuki; Salaro,Ana Lúcia. |
| The objective of the present study was to evaluate the protein requirement of juvenile Trichogaster lalius, blue variety. The experimental design was of randomised blocks (B1 = initial weight of 1.04±0.05 g and B2 = 1.36±0.02 g), with two replicates within each block and five treatments (230, 270, 310, 350 and 390 g CP/kg diet). The fish were fed to satiation, three times a day for 90 days. The study evaluated: survival rate, weight gain, final length, feed intake, feed conversion ratio, protein efficiency ratio, specific growth rate and condition factor. There was a linear effect of dietary protein levels for protein efficiency ratio, specific growth rate (positive linear effect) and feed conversion ratio (negative linear effect). For weight gain, final... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dwarf gourami; Growth performance; Nutrient requirements; Ornamental fish. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000200010 |
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| Souto,Cristielle Nunes; Lemos,Marcos Vinicius Antunes de; Martins,Graciela Pessoa; Araújo,Janaína Gomes; Lopes,Karina Ludovico de Almeida Martinez; Guimarães,Igo Gomes. |
| The optimal dietary digestible protein to energy ratio is critical for the success of fish farming. Considering that it provides the proper development of the animals, this study was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for goldfish fingerlings. Diets were formulated to contain 28.0, 35.0, 42.0 and 49.0% DP and 3,600 and 3,200 kcal/kg. The growth parameters evaluated were daily weight gain (DWG), feed intake (FI), feed conversion ratio (FCR), protein efficiency ratio (PER), protein productive value (PPV) and energy retention ratio (ERR) and specific growth rate (SGR). Regardless FI, all the parameters were affected by protein and energy levels and interaction between both factors was observed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy requirement; Feed intake; Growth protein requirement; Ornamental fish. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000600008 |
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| COSTA,Igor David da; SOARES,Maiza Oliveira. |
| Trophic relationships in fish communities are affected by the availability of resources, which in turn is affected by spatial and temporal variations throughout the year. The aims of this study were to characterize the diet of A. tetramerus in a streamlet in the north of Brazil and compare its composition in different hydrological seasons (wet and dry seasons). Collections were performed every two months from October 2011 to September 2012 with the aid of seine nets, hand net and fishing traps in the streamlet located in the Machado River drainage basin in the Rondônia state. Most of the specimens collected were quite small (< 40 mm) and had empty stomachs. Our results showed that A. tetramerus feeds on a wide variety of items of plant origin, such as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Perciformes; Amazon; Feeding habits; Ornamental fish. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000400365 |
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| Oliveira,Sarah Ragonha de; Souza,Rondon Tatsuta Yamane Baptista de; Nunes,Érica da Silva Santiago; Carvalho,Cristiane Suely Melo de; Menezes,Glauber Cruz de; Marcon,Jaydione Luíz; Roubach,Rodrigo; Ono,Eduardo Akifumi; Affonso,Elizabeth Gusmão. |
| Poor water quality condition has been pointed out as one of the major causes for the high mortality of ornamental fishes exported from the state of Amazonas, Brazil. The purpose of the current study was to define water quality standards for cardinal tetra (Paracheirodon axelrodi), by establishing the lower and higher for lethal temperature (LT50), lethal concentration (LC50) for total ammonia and nitrite and LC50 for acid and alkaline pH. According to the findings, cardinal tetra is rather tolerant to high temperature (33.3 ºC), to a wide pH range (acid pH=2.9 and alkaline pH=8.8) and to high total ammonia concentration (23.7 mg/L). However, temperatures below 19.6 ºC and nitrite concentrations above 1.1 mg/L NO2- may compromise fish survival especially... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 96-h LC50; Ornamental fish; Paracheirodon axelrodi; Water quality. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672008000400023 |
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| Whittington, M.; Pereira, M.A.M.; Gonçalves, P.M.B.; Costa, A.. |
| Os extensos recifes de coral ao longo da costa de Moçambique constituem um importante recurso nacional. Eles providenciam alimentos e receita para uma grande parte das comunidades costeiras e possuem um elevado potencial para um substancial crescimento económico dentro do sector turístico. O governo de Moçambique reconheceu a importância dos recifes de coral e iniciou um número de acções apontadas para a gestão sustentável e conservação deste recurso no quadro do seu Programa Nacional de Gestão dos Recifes de Coral (PNGRC). A actual moratória de dois anos sobre o comércio de peixe ornamental e coral vivo é uma dessas iniciativas e é importante que a oportunidade de formular um quadro de gestão sustentável deste comércio seja efectuada rapidamente. É em... |
| Tipo: Working Paper |
Palavras-chave: Ornamental fish. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/280 |
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| Ikeda,A.K.; Zuanon,J.A.S.; Salaro,A.L.; Freitas,M.B.D.; Pontes,M.D.; Souza,L.S.; Santos,M.V.. |
| The influence of fatty acid composition of the diets on the productive performance and on cold and heat tolerance of juvenile freshwater angelfish (Pterophyllum scalare), in three different phases, was studied. Phase I studied the productive performance of freshwater angelfish in a completely randomized experimental design with four treatments, canola, linseed, olive and soybean oils and four replicates during 50 days using 192 fish in 16 aquaria. Phase II studied the cold tolerance of juvenile freshwater angelfish using 72 juvenile freshwater angelfish, coming from phase I and maintained in 12 aquaria climatized chamber. The temperature was reduced 1ºC per day, until the observation of 100% fish mortality. Phase III, it was studied the heat tolerance of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ornamental fish; Fatty acids; Growth; Survival; Temperature. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000300019 |
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| Registros recuperados: 32 | |
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