TCC - Bacharelado em Engenharia de Pesca (UAST)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2938
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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 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 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 Efeito de fontes de carbono no berçário de camarão Litopenaeus vannamei (Boone, 1931) cultivado com tecnologia de biofloco no semiárido pernambucano(2018) Silva, Joyce Carla Carvalho da; Silva, Ugo Lima; http://lattes.cnpq.br/1858876631961029; http://lattes.cnpq.br/5764032184191409The objective of this work was to evaluate the cultivation of Litopenaeus vannamei shrimp during the nursery phase in a biofloque system and zero water exchange using molasses, wheat, cassava and sugar sources. The experiment was conducted at the Laboratory of Experimentation of Aquatic Organisms, Serra Talhada, PE, Brazil. The shrimp nursery was held during 45 days of cultivation. A total of 20 circular polyethylene tanks with an area of 0.05107 m2, supplied with 15 L were used, with no water renewal and constant aeration using radial compressor (120 W) and porous stones. It was adopted a completely randomized design with 5 treatments and 4 replicates, by adding four carbon sources: molasses (ME), sugar (AC), manioc starch (FM), wheat flour (FT) and a treatment control (CT) without the application of carbon sources.The carbon sources were applied daily in the treatments (ME, AC, FE and TR) in a ratio carbon (C) and nitrogen (N): 15: 1. L. vannamei post-larvae with a mean weight of 0.2 g were populated with 8 animals per culture tanks at a density of 156.6 shrimp / m2. The shrimp were fed daily at a frequency of 3 times daily with a commercial feed containing 40% crude protein. During the period of the experiment, the physicochemical variables of the water were monitored: temperature (° C), dissolved oxygen (mg / L), electrical conductivity (mS / cm), salinity (g / L),potential oxy-reduction (mV), total dissolved solids (mg / L), and Hydrogenion potential.The use of carbon sources did not influence the mean values of the physico-chemical variables of water quality, being satisfactory to the good development of the prawn larvae. At the end of the cultivation, the zootechnical performance with respect to survival, final biomass and feed conversion factor presented significantly better values with the use of cassava and wheat flour as carbon sources.Item Qualidade da água e reuso em experimentos aquícolas com tecnologia de biofloco(2018) Coêlho, Aureni Pereira; Silva, Ugo Lima; http://lattes.cnpq.br/1858876631961029; http://lattes.cnpq.br/8354389878126055The present study evaluated the reuse of water in four different experiments, where the first and second experiments were carried out with tilapia culture and third and fourth experiment with marine shrimp, respectively, with biofloc technology (BFT) in the raising and fattening stages of tilapia of the Nile (Oreochromis niloticus). Nursery and juvenile shrimp production (Litopenaeus vannamei). Water collection and analysis were carried outat the Laboratory of Experimentation with Aquatic Organisms at the facilities of the Federal Rural University of Pernambuco at the Serra Talhada Academic Unit in Serra Talhada, PE, Brazil. In the experiments with Nile tilapia were used 4 circular tanks ofglass fiber with capacity of 1000L with useful volume of 800L. In the experiments with marine shrimp, 4 circular polyethylene tanks with a capacity of 20L and a useful volume of 15L were used. Water quality was analyzed based on temperature, dissolved oxygen, pH, and salinity. For the water analysis, total ammonia, nitrite, nitrate, alkalinity and total suspended solids were also monitored. The data were statistically analyzed at a significance level of 5%. All the physical-chemical variables presented significant difference after their reuse, with the exception of ammonia. The reuse of the water presented chemical modifications throughout its uses. However, it can be concluded that it is possible to re-use it in other crops with very small replenishments, provided that there is adequate monitoring and management throughout the crop so that the physicochemical and biological variables of the water remain in line with that recommended for the species.