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Composição centesimal de vegetais orgânicos para potencial utilização na alimentação de peixes

2024-03-12T17:08:37Z

Title: Composição centesimal de vegetais orgânicos para potencial utilização na alimentação de peixes Author: Nascimento, Leila Beatriz Alves First advisor: Borba, Maude Regina de Abstract: Market value is increasingly applied to agroecological products. However, in animal production, agroecology is still very restricted, constituting one of the areas with great possibilities for development. Agroecological/organic-based aquaculture can be an interesting activity for the diversification of production, contributing to food sovereignty and security, as well as an alternative source of income on rural family properties. In the case of fish farming, given that there is no fish feed based on organic products on the national market, an alternative would be to allocate part of organic agricultural production to the development of feed for continental fish farming. The objective of this study was to survey and analyse organic vegetables for potential use in feeding fish produced in the municipality of Laranjeiras do Sul – PR, envisioning organic fish farming as a way of diversifying production on rural family properties in the region. To this end, initially, a survey was carried out of certified agroecological producers who had fish ponds and were interested in developing fish farming. Subsequently, organic products and native fruits were identified with potential for use in feeding captive fish, whether as ingredients in feed or directly in natura. Subsequently, organic products and native fruits were identified with potential for use in feeding farmed fish, whether as ingredients in feed or directly in natura. The foods were analysed in the laboratory to determine their nutritional composition. Six certified organic producers were identified who have fish ponds and are interested in developing fish farming, as well as nine agroecological/organic products and their residues, with potential for use in fish feeding. Through analyses of the proximate composition (moisture, protein, lipids, ash and fiber) of food and waste, it was possible to conclude that the use of tuberous cassava root, sweet potato, cassava leaf, sweet potato leaf and cauliflower as alternative ingredients in diets formulated for fish could be interesting. However, complementary studies evaluating, among other parameters, consumption, digestibility, and performance in relation to the inclusion of these ingredients in diets formulated for different fish species must be carried out. Additionally, it can be inferred that the fresh supply of lettuce, cabbage, and cauliflower leaves to herbivorous fish species, such as grass carp (Ctenopharyngodon idella), is a good alternative for the destination of surplus or, eventually, not commercialized production. Publisher: Universidade Federal da Fronteira Sul Type: Monografia

Composição centesimal e glicogênio das ostras nativa Crassostrea gasar e exótica Crassostrea gigas em diferentes épocas do ano no sul do Brasil

2024-02-09T19:31:05Z

Title: Composição centesimal e glicogênio das ostras nativa Crassostrea gasar e exótica Crassostrea gigas em diferentes épocas do ano no sul do Brasil Author: Gonçalves, Igor Moisés Andrade First advisor: Borba, Maude Regina de Abstract: The oysters represent a high nutritional value kind of food, they are considered rich sources of proteins and minerals. However, its nutritional composition can change, among other factors, according to the place of extraction, wether is food available or not, the season of the year and the degree of gonadal maturation. The main goal of the present study was to evaluate the chemical composition and glycogen contents of two species of oysters, the exotic Crassostrea gigas and the native C. gasar. This present final paper accomplished itself in the laboratories of the Aquaculture Engineering course at the Federal University of Fronteira Sul (UFFS), at Laranjeiras do Sul-PR campus. The samples of two oyster species were collected from a conducted cultivation at Paraíso das Ostras marine farm, located in Caeira da Barra do Sul, Florianópolis / SC, at four different periods of the year, in April, July and October of 2019 and in January of 2020. The two oyster species were grown in lanterns that were located in natural environment, distributed in a completely randomized design with 3 repetitions/species. In the sample collections, the animals were removed from the culture lanterns, sanitized and removed from their shells for the following analysis of the proximal composition (moisture, protein, lipid and ash) and soft tissue glycogen. The obtained results were analyzed statistically via bifactorial ANOVA and Tukey test of averages separation (p<0.05). It was found that the time of year influences the nutritional composition of oysters C. gigas and C. gasar. For both species, in general, the highest concentrations of protein, lipid and glycogen were observed in October. Publisher: Universidade Federal da Fronteira Sul Type: Monografia

Assimilação de nutrientes por macrófitas flutuantes (Azolla sp. e Salvinia molesta) em simulação de cultivo intensivo de Oreochromis niloticus

2024-02-09T19:16:05Z

Title: Assimilação de nutrientes por macrófitas flutuantes (Azolla sp. e Salvinia molesta) em simulação de cultivo intensivo de Oreochromis niloticus Author: Pinto, Suelen Cristina First advisor: Pereira, Adriana Saccol Abstract: Due to the expansion of aquaculture activities, issues related to the environmental sustainability of production systems arise through the direct use of water resources, which can affect the quality and quantity of water available in these systems. Given this, it is necessary to search for viable mechanisms that make it possible to minimize such impacts using the available natural resources in a sustainable way. As an alternative to the treatment of these effluents it is possible to use aquatic macrophytes which is normally associated with the use of floating or rooted plants. The aim of this work was to evaluate the efficiency of assimilation of nutrients by floating macrophytes (Azolla sp. And Salvinia molesta) in intensive culture simulation of Oreochromis niloticus (Nile tilapia) in order to verify the effluent treatment which is the best option to be used in biological treatment of fish culture water. A water recirculation system containing a box with a capacity of 250 L was used where the juveniles of Oreochromis noloticus that produced the effluent were allocated, and 9 boxes with 50 L capacity where the macrophytes were placed in a totally random manner. Three treatments (Azolla sp. And Salvinia molesta, Azolla sp. And Salvinia molesta) were used with three replicates each. The variables (water temperature, dissolved oxygen, pH, conductivity, ammonia and nitrite), the water in the culture tank and the boxes containing the macrophytes were measured. The use of aquatic macrophytes for the treatment of fish farming effluents can be considered according to the system to be installed. The results show the need to increase the surface area of the filters containing the aquatic macrophytes, as well as to promote their development completely. Furthermore, it is necessary a longer period of time for the experiment so that in this way, one can evaluate the ability of the macrophytes phytoremediator as in the treatment of these effluents. Publisher: Universidade Federal da Fronteira Sul Type: Monografia

Desempenho produtivo e composição corporal de juvenis de tilápia do nilo alimentados com feijão, Phaseolus vulgaris L., Extrusado e in natura

2024-02-09T19:10:52Z

Title: Desempenho produtivo e composição corporal de juvenis de tilápia do nilo alimentados com feijão, Phaseolus vulgaris L., Extrusado e in natura Author: Schmidt, Harri Erich Santos First advisor: Borba, Maude Regina de Abstract: The aquaculture has great growth worldwide and in Brazil the state of Paraná stands out with the production of Nile tilapia (Oreochromis niloticus). From sustainable aquaculture produc tion with agroecological guidelines, fish farming emerges as a viable economic alternative for family farmers. In this sense, the objective of this study was to evaluate the effect of the inclu sion of beans (Phaseolus vulgaris L.) residue from the processing industry, previously extrud ed and in natura, as an alternative ingredient in organic diet, on the survival, growth and body composition of Nile tilapia juveniles. Five isoprotein and isoenergetic diets were prepared to contain 0, 10 and 20% extruded and in natura beans (control, 10FE, 10FN, 20FE and 20FN, respectively) in a completely randomized design, in triplicate. The diets were prepared with certified organic ingredients and offered for 30 days to tilapia juveniles (0.24±0.05 g) stored (20 fish/experimental unit) in 15 polyethylene tanks (60 L of useful volume), connected to a heated (26 ºC) and salinized (3‰) water recirculation system with individual aeration. At the end of the feeding period, survival and performance variables (weight gain, daily feed intake, feed conversion and specific growth rate) of tilapia juveniles were evaluated. Fish samples were randomly collected at the beginning and end of the experimental period to determine the body composition of the whole fish. Zootechnical performance and survival of Nile tilapia juveniles were significantly influenced by dietary treatments. The inclusion of fresh beans in diets resulted in worsening of all variables analyzed (P<0,05), on the other hand, the results obtained with diets containing extruded beans did not differ from the control (P>0.05). Mois ture, crude protein and hepatosomatic index were not influenced by dietary treatments (P>0.05). However, nile tilapia juveniles fed diets containing fresh beans showed the lowest lipid and highest ash contents (P<0.05). It is concluded that the inclusion of 10% or more of fresh bean meal in the diet is harmful for Nile tilapia juveniles in the initial phase of develop ment, but the extrusion process improves its utilization by fish, allowing inclusion in the diet of up to 20% without impairment in the performance and survival of juveniles of O. niloticus. Publisher: Universidade Federal da Fronteira Sul Type: Monografia