TCC - Bacharelado em Engenharia de Pesca (UAST)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2938
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Resultados da Pesquisa
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 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.