TCC - Bacharelado em Engenharia de Pesca (UAST)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2938
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Item Larvicultura de tilápia do Nilo Oreochromis niloticus (Linnaeus, 1758) submetido a dietas com diferentes níveis protéicos com tecnologia de biofloco(2019-12-06) Gaia, Maria Aparecida Alves; Silva, Ugo Lima; http://lattes.cnpq.br/1858876631961029; http://lattes.cnpq.br/9485827629034373The objective of this study was to evaluate the use of diets with different protein levels during Nile tilapia larviculture cultivated with biofloc technology. The experiment with larviculture was carried out at the Laboratory of Experimentation of Aquatic Organisms of the Serra Talhada Academic Unit (UFRPE / UAST), during 28 days. A completely randomized design with five treatments with diets containing different concentrations of 30PD digestible protein was adopted; 34PD; 38 PD; 42PD and 46PD, with four repetitions. Twenty circular fiberglass experimental tanks with a useful volume of 1000 L of water were used, and 200 L of water were used in the experiment for the cultivation of Nile tilapia larva (O. niloticus) in biofloc technology. The larvae were fed 6 times a day. To maintain the C: N ratio, 15: 1 was fertilized daily with molasses. Physical and chemical variables of water quality were monitored throughout the cultivation. The zootechnical performance of the larvae was evaluated through the variables final weight (g), survival (%), apparent feed conversion factor (FCA), TBI (%. day-1), and daily weight gain (mg day -1). Based on the study results, the zootechnical performance variables did not present significant differences (p> 0.05), however, it was observed that in a biofloc system a protein level below that required by the larvae of 38% of digestible protein presented favorable data for the. cultivation of nile tilapia larva. The results by the water quality analysis showed that the treatments with the different protein levels did not present significant difference in the water quality (p> 0,05). Given the study it was possible to realize that it is possible to cultivate Nile tilapia larvae (oreochromes niloticus) using 30% digestible protein diets in a culture system using biofloc technology.Item Influência da tecnologia de biofloco na qualidade de água e desenvolvimento da larva de tilápia do Nilo (Oreochromis niloticus)(2019) Santos, Wagner Soares; Falcon, Dario Rocha; http://lattes.cnpq.br/9816735154471425The present work evaluated the cultivation of nile tilapia larva (Oreochromis niloticus) in bioflake technology. The cultivation of Nile tilapia larvae in bioflake technology was carried out at the Aquatic Organisms Experimentation Laboratory (LEOA), of the Federal Rural University of Pernambuco (UFRPE), during the period of 28 days. A completely randomized design was adopted with three treatments: bioflake and feed (BFT), clear water with feed (ACD) and non-feed bioflake (BFTs), with four replications per treatment. We used 12 tanks with a useful volume of 15 L of water. Larvae with initial weight 0.001 g were fed ration formulated according to the requirement for the species and processed in the LIONA, with a trawling frequency of 6 times a day and feeding rate of 10 of biomass. Fertilization stemming from daily molasses was performed to maintain the 15:1 (C:N) ratio. L-1), conductivity (S. cm-1), salinity (g L-1), pH, total dissolved solids, total ammoniacal nitrogen (N-NAT), nitrite (N-NO2), nitrate (N-NO3), inorganic phosphate (P-PO4), turbidity, sedimentable solids (SS) and alkalinity. Zootechnical performance of larvae was evaluated using the variables final weight (mg), survival (), apparent feed conversion factor (FCA), TCA (/ day), and condition factor (K). In the observation of the difference between treatments according to the decriminalanalysis of correct allocation of the group that was 96.80 with P < 0.0001. The best results were achieved in bft and acd treatments, when compared to bioflake without feed. Bioflake technology is a good alternative for the cultivation of nile tilapia larva, allowing the reduction of feed use, since productive performance was similar to the treatment that used clear water and feed.Item Produção de alevinos de tilapia do nilo Oreochromis niloticus (Linnaeus, 1758) na empresa AAT International, Paulo Afonso, BA(2018) Santos, Jorge Luiz da Silva; Silva, Ugo Lima; http://lattes.cnpq.br/1858876631961029; http://lattes.cnpq.br/3650685131155739Aquaculture is the fastest growing food industry in the world. With a production in Brazil of 562,500 tons in 2014, being the 14th largest producer in the world. The objective of this work was to identify the necessary infrastructure for the production of tilapia from AAT international Ltda, located in the city of Paulo Afonso, Bahia, the company is focused on the production of tilapia juveniles and juveniles. The stage took place from October 15 to December 26, 2018, during which time it was possible to follow the routines and the necessary infrastructure for aquaculture production, thus handling during the whole production phase, from the collection of eggs, asepsisof eggscollection, transfers to the various sectors that the company has, methods of classification, control of diseases and medicines and strategies used during cultivation. The experiences and knowledge acquired during the internship gave me a professional maturity and a better understanding of the theoretical knowledge applied in practice.Item Cultivo de tilápia do Nilo (Oreochromis niloticus) em tanques rede, na Aquicultura JE, Malhada Grande - Bahia(2018) Coêlho, Aureni Pereira; Silva, Ugo Lima; http://lattes.cnpq.br/1858876631961029; http://lattes.cnpq.br/8354389878126055This work describes the activities developed in the aquaculture fishery sector in aquaculture JE in the Malhada Grande Village, Paulo Afonso, BA. The cultivated species was the Nile tilapia (Oreochromis niloticus), the main species cultivated in the region and in Brazil. The internship was held during the period from June 1 to August 10, 2018, with a total workload of 300 hours. The activities developed were: monitoring of the facilities and maintenance of the tanks network; acquisition, acclimatization and settlement of fingerlings and juveniles; production and food management; biometric evaluation and expenditure. Fifteen tanks were harvested with pockets of 5 m3 and 4 mm mesh, containing 2.400 alevins with an average weight of 6 g. The realization of the settlement occurred early in the morning in an attempt to cause minimal stress to the animal. To prevent disease, a pre-release salt bath containing 5 to 10 g of salt per liter of water was performed. The biometric analyzes carried out during the cultivation occurred on a bi-weekly basis, in the classification process, pre-harvesting, or occasionally when irregularity was observed in the consumption of food. The data obtained served to regulate the amount of ration to be offered. The fingerlings (6 - 50 g) were fed every hour. When juveniles were fed, regardless of the mean weight, four times a day. Expenditure was started, which the fish were removed from the tanks with the aid of puçás after lifting on the raft and retraction of the screen, reducing the space and providing the removal of the animals faster. The animals were weighed, weighed until the desired amount was reached, and then the animals were placed in a ice-cold water box for hypothermia. Then in the fish box are added ice / fish / ice to ensure a good quality of freshness of the animal during transport. This stage was important to build new knowledge and put into practice the knowledge acquired throughout the academy, which was previously only theoretical.Item Compreendendo a associação de fatores bióticos e abióticos na larvicultura de tilápia (Oreochromis niloticus) em diferentes fotoperíodos(2019) Sousa, Valkiria Alves de; Souza, Luciana Sandra Bastos de; http://lattes.cnpq.br/1186468548787818; http://lattes.cnpq.br/2552157766170811The increase in fish consumption makes it essential to design more efficient production systems, in this context, environmental modifications as is the case of photoperiod can contribute to this improvement. The tilapia responses to photoperiod were not well studied in the environmental conditions of the Brazilian semiarid and become important for the conception of more sustainable managements, management of natural resources (water) and maximization of the production system. Thus, it was considered the hypothesis that tilapia fingerlings respond positively to photoperiod. This study investigated the influence of photoperiod on the development and Association of biotic and abiotic factors in the larviculture of tilapia (Oreochromis niloticus) in different photoperiods. The experiment was conducted between December 02, 2017 to January 02, 2018, in the experimentation with aquatic organisms, belonging to the Academic Unit of Serra Talhada (UAST) of the Federal Rural University of Pernambuco (UFRPE), Serra Talhada, Pernambuco. The tilapia Alevines initially presented weight, width and length equal to 0.018 ± 0.0047 g, 2.36 ± 0.16 mm and 10,57 ± 0.70 mm, respectively. The animals were fed six times a day (08:00, 10:00; 12:00; 14:00; 16:00 and 18:00) with commercial ration (55% of crude protein) equivalent to 2.5% of the biomass of the individuals. We used a completely randomized design with four treatments represented by the luminosity conditions: 0L: 24D, 12L: 12D (Control), 18L: 6D, 24L: 0D and four replications,where L (light) and D (dark). Abiotic factors were considered: temperature, conductivity, hydrogenionic potential, potential oxide reduction, total dissolved solids, dissolved and saturated oxygen. In turn, biotic factors were related to zootechnical parameters. Information related to water quality (temperature, dissolved oxygen, oxide reduction potential, conductivity and pH) were obtained daily in the morning and afternoon periods. Additionally, biometric analyses were performed throughout the experimentto determine the length, width and mass of the animal. This information was used to quantify the mass gain, specific growth rate and apparent feed conversion. The final number of individuals was also counted for the determination of the survival rate. The data were subjected to descriptive statistical analysis and analyses of variance, use of the main component technique and multiple regression model to estimate the weight gain of the alevines. Mass gain values of 0.1028 were observed; 0.1219; 0.1512 and 0.1746 for the treatments of 0l: 24D, 12L: 12D, 18L: 6D and 24L: 0D respectively. The photoperiod influenced the mass gain, and the light exposure of 18L: 6D and 24L: 0D promoted improvements in the survival rate and apparent feed conversion of the Alevinos. The mass gain of tilapia alevines was especially affected by dissolved and saturated oxygen, length and photoperiod.