Engenharia de Pesca (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/16
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Item Cultivo de camarão marinho (Litopenaeus vannamei) em baixa salinidade na Fazenda Aquicultura Tapacurá, São Lourenço da Mata - PE(2023-09-20) Ferreira, Danilo de Souza; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/5295574324521332Item Regulação fisiológica da butirilcolinesterase através do uso de aditivos alimentares e sua aplicação em rações para camarão marinho(2023-04-19) Souza, Douglas Lemos de; Santos, Juliana Ferreira dos; http://lattes.cnpq.br/6621907859216486; http://lattes.cnpq.br/2715233041393261Litopenaeus vannamei is the most cultivated crustacean species in the world, representing 51.7% of total production. In Brazil, the species leads the national shrimp farming earning about R$1.6 million. Seeking to optimize cultures, new methods of physiological regulation can generate important results. The investigation of the modulation of the action of enzymes in the endocrine/digestive systems is an alternative with the potential to obtain significant results. Recently, it was proposed that the enzyme butyrylcholinesterase (BChE) plays a role in the metabolism of ghrelin, known as the “hunger hormone” and may influence feed intake and productive performance. The present study aimed to investigate the in vitro effect of BChE inhibitors as a physiological tool using food additives and their application in marine shrimp diets. Juveniles of L. vannamei in the fattening phase (2g, 4g and 6g) were obtained from a local producer and enzyme activity tests were carried out in different tissues (eye, muscle and hepatopancreas) using the IC50 parameter (concentration that inhibits the enzymatic activity by 50%). Tests were carried out to evaluate the inhibitory effect of the following plants: arugula (Eruca sativa), Swiss chard (Beta vulgaris) and spinach (Spinacea oleracea). The best inhibition results were arugula IC50: 0.019μg/mL in 6g shrimp; chard IC50: 0.14μg/mL in 4g shrimp and spinach IC50: 0.20μg/mL in 4g shrimp, chard showed better results for use as an additive. The feed was processed, and inhibitor extracts were added to the feed, in different samples, using grain alcohol as an incorporating vehicle. The physical and bromatological evaluations were then conducted, in the physical tests the repelletized rations showed a difference only in apparent density, even the repelletized rations being denser the buoyancy was not affected, for the bromatological tests they only showed lower humidity, due to the time in the oven. It can be concluded that individuals of average weight (4 g) have greater BChE activity, suggesting that this phase is ideal for introducing feeds with BChE inhibitors and that the inclusion of additives in shrimp feed, using the repellent method, can be used without impairing the nutritional and physical quality of the feed.Item Salinização da água e seus efeitos sobre o desempenho zootécnico do camarão marinho Penaeus vannamei na fase de berçário(2023-01-24) Cavalcanti, Bruno Roberto de Siqueira; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/4106106458669767Item Efeito da frequência de adição do zooplâncton Brachionus plicatilis sobre o desempenho zootécnico de pós-larvas da espécie Litopenaeus vannamei cultivado em sistema de bioflocos(2023-03-15) Malandra, Adely Leticia Alves; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/5263002170389598Item Efeito da adição de nucleotídeoss sobre o desempenho zootécnico no cultivo em sistema intensivo de Litopenaeus vannamei na fase de engorda(2023-01-24) Silva, Eugênio Breno Lucena Amâncio Carmo da; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/6685497540018041Item Efeitos do ajuste iônico em água de baixa salinidade sobre o desempenho zootécnico do camarão marinho Litopenaeus vannamei cultivado em sistema intensivo(2023-03-24) Oliveira, Caio Vinícius Nunes de; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/6521603417943771Item Efeito da densidade de adição de Brachionus plicatilis sobre a qualidade da água do cultivo de pós-larvas do Litopenaeus vannamei em sistema de bioflocos(2022-05-31) Reis, Júlio César Gomes; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/5306630117410353Item Efeito da adição do zooplâncton Brachionus plicatilis sobre o desempenho zootécnico de pós-larvas da espécie Litopenaeus vannamei cultivado em sistema de bioflocos(2022-05-31) Xavier, Anderson Bruno Fernandes; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/3177743325406455Item Viabilidade econômica do empreendimento da Aquacultura Oliveira: carcinicultura de águas interiores na cidade de Feira Nova/PE(2021-10-10) Oliveira, Émerson José da Silva; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/7414873795164206The production of marine shrimp (Litopenaeus vannamei) has been intensified far from the coastal regions, as they also present favorable conditions for its development. In addition to being far from regions that have a focus of disease incidence, the water quality has good ionic characteristics that allow for good zootechnical performance. In view of this, it is possible to perceive the degree of interest towards producers who start to increase shrimp farming within their production or migrate completely to the activity. With this, the objective of this work was to evaluate the technical and economic viability of the Aquacultura Oliveira enterprise regarding the production of marine shrimp in inland waters, in the city of Feira Nova, in the rural region of Pernambuco. The property has 1.25 hectares available, in which it operates with 07 semi-excavated nurseries totaling a productive area of 4,459 m2. The production system adopted will be by two-phase management and will have as a goal the annual production of 32 tons. At first, the total investment required for the implementation of the two-phase system and its entire operation is R$ 497,030.98. The commercialization of fresh shrimp will be responsible for the main sales method, which, added to the other types, will generate an estimated annual gross revenue of R$ 647,216.64. Through the sensitivity analysis, the following data were obtained: corrected net present value (NPV) of R$ 524,542.30; profitability index of 15.73%; profitability of 21.37%; discounted payback of 8.91 years; internal rate of return (IRR) 13%; average attractiveness rate (AMR) of 5%. In this way, it is possible to highlight the potential that the enterprise has to produce a protein with high nutritional value, in addition to presenting favorable characteristics for competitiveness in the market.Item Cultivo de camarão marinho (Litopenaeus vannamei) com balanço iônico na Fazenda Boa Esperança, Salgado de São Felix - PB(2022-05-23) Barbosa, Juliana Danielle; Silva, Luis Otávio Brito da; http://lattes.cnpq.br/3365265235618078; http://lattes.cnpq.br/4691897025644739