TCC - Bacharelado em Engenharia de Pesca (UAST)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2938
Navegar
7 resultados
Resultados da Pesquisa
Item Biometria e qualidade de água de alevinos de curimatã em diferentes fotoperíodos(2020-09-18) Morais, Julio Gabriel Cordeiro de; Souza, Luciana Sandra Bastos de; http://lattes.cnpq.br/1186468548787818; http://lattes.cnpq.br/2106503604382871This study aimed to analyze the biometrics and water quality of a curimatã crop in different photoperiods. The work was developed at the Serra Talhada Academic Unit (UAST). Three polypropylene boxes were placed inside a wooden structure covered with canvas, to avoid interference from external lighting. Inside each box, 3 tanks with a useful volume of 15 L were placed to carry out the experiment, with a stocking density of 2 animals/L. The lighting conditions were represented with fluorescent lamps of 30 W, which were controlled by analog timers. The treatments were represented by three different light conditions: 0Light (L): 24Dark (D), 12L: 12D (control) and 24L: 0D. Each tank received individual aeration through an air compressor and porous stones. A feed frequency with six daily feeds was adopted, with commercial powdered feed containing 55% crude protein, at a feed rate of 10% of the animals' live weight. The following variables were monitored daily: temperature (T), dissolved oxygen (OD), saturated oxygen (OS), salinity (SAL) and pH. At the end of the experiment, biometrics were performed, with which it was obtained: 1) Final number of individuals; 2) Longitudinal length; 3) Average width and; 4) Final weight. With these data, the growth parameters were obtained: biomass gain (GB, g), specific growth rate (TCR,% .day-1 ), survival (%) and the Fulton condition factor (K). The water quality parameters showed mean values equal to T = 24.3 ° C, OS = 69%, OD = 5.6 mg/L and pH = 7.7-7.8 for temperature, saturated oxygen, dissolved oxygen and pH, respectively. The specific growth rates were different, being 0.61, 0.55 and 1.56% for treatments 0L:24D, 12L:12D e 24L:0D. Exposure to photoperiod did not affect the biometric and water quality parameters of fingerlings, but exposure to 24C: 0E significantly improved the specific growth rate (TCE) of the species, which can help in the handling conditions of this fish species.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 Acompanhamento e relato das atividades desenvolvidas no Laboratório de Experimentação de Organismos Aquáticos(2019) Santos, Wagner Soares; Falcon, Dario Rocha; http://lattes.cnpq.br/9816735154471425Item Atividades aquícolas no laboratório de experimentação de organismos aquáticos, UFRPE, UAST, Serra Talhada - PE(2018) Silva, Joyce Carla Carvalho da; Silva, Ugo Lima; http://lattes.cnpq.br/1858876631961029; http://lattes.cnpq.br/5764032184191409Item 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.Item Acompanhamento da produção piscícola de Tilápia do Nilo (Oreochromis niloticus) em tanques-redes no município de Glória -BA(2018) Silva, Allysson Winick da; Mendes, Renata Akemi Shinozaki; http://lattes.cnpq.br/2026358226342858; http://lattes.cnpq.br/7136721430965280This report describes the development of the activities carried out at the Itaparica Fish Farm, located in Glória, Bahia, as well as elucidating the importance of each stage. At the endwe suggestimprovements to maintain the good functioning of the productive sector. The main species cultivated in the region is Oreochromis niloticusin net cages. Thisactivity is expanding in the world and also in this region, having as security food security, employment and revenue to the Stateand for the producer. The main activities performed were: Reception and settlement of the animals, feeding, immunization, classification, biometrics, monitoring, and technical visits. These activities were carried out during three months and contributed to broaden and apply the knowledge built throughout the academy, as well as allowing the visualization of different scenarios, also allowing the development of professional and personal relationships that will be indispensable for insertion in the market of job.