TCC - Zootecnia (Sede)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/478
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Item Efeito da inclusão de farinha de minhoca com e sem zeólita natural na dieta de tilápia (Oreochromis niloticus) sobre os parâmetros de carcaça(2022-10-07) Oliveira, Elton Francisco de; Ludke, Maria do Carmo Mohaupt Marques; http://lattes.cnpq.br/4629657233206289; http://lattes.cnpq.br/3930176884309812The purpose of this research is to evaluate the effect of the addition of earthworm flour and the inclusion of zeolite (clinoptilolite) on carcass composition parameters. In the experiment, 280 tilapia of the species Oreocrhomis niloticus were used, with an initial and final weight of 2.826±0.0896g and 13.59±0.75g, respectively. The treatments were 8 diets corresponding to a 4 x 2 factorial arrangement, with 4 levels of inclusion of earthworm flour (0, 3.5; 7.0 and 10.5%) and levels of 0 and 2% of zeolite (Clinoptilolite ), the fish were distributed in a randomized block design with 5 replications. The following parameters were evaluated: carcass yield (RC), carcass dry matter (MSC); carcass organic matter (MOC); Mineral Substrate Matter (MMC); carcass energy based on dry matter (EMSC); ethereal substrate extract (EEC); energy retention coefficient (CRE); crude carcass protein (CBP); RE= Energy retention coefficient; CRP= Protein retention coefficient; TEP= Protein Efficiency Rate; IHE= Hepatosomatic Index; IVS= Viscerosomatic Index; At the end of the experiment (85 days) the animals were stunned with eugenol and then sacrificed and frozen, later they were lyophilized for analysis. The data were submitted to analysis of variance, in order to observe the main effects and the interaction between the factors (Worm meal levels and Zeolite inclusion) on the composition and protein and energy retention in the fish body. All analyzes were performed using the GLM procedure of the SAS computational package, at a 5.0% significance level. According to the data, there was a significant reduction in the amount of lipdis (p=0.0208) and in the energy retention coefficient (CRE) (p=0.0376) in the carcass of these animals when adding Zeolite in the diets. As for earthworm meal, a significant effect (p=0.0500) on CRE was observed, where when performing the regression there was a linear increase (P=0.0188) when including this ingredient in the diets of these fish. With this, we can add up to 10.5% of earthworm meal in diets for Tilapia, however Zeolite reduced energy efficiency, not interfering with other carcassItem Avaliação econômica de sistemas de produção de ovinos de corte na região Nordeste(2021-12-02) Gomes, Larissa Manoely da Silva; Monnerat, João Paulo Ismério dos Santos; http://lattes.cnpq.br/3851426263880079; http://lattes.cnpq.br/6299383338289793The objective was to evaluate the economic viability of three sheep production objectives, differentiated by technological levels of exploration. Environmental and technical assumptions are assumed for the structuring of technological matrices. The Technological Matrix 1 considers a total of 176 animals, distributed in 100 hectares of native Caatinga pasture, with forage and mineral supplementation. For this system, nutritional, sanitary and reproductive management with more extensive characteristics is considered. For Technological Matrix 2, the initial module of 315 animals is assumed, at a moderate technological level, distributed in native Caatinga pasture enriched with Buffel grass (Cenchrus ciliaris) and rearing and finishing the lambs (as) on pasture in this cultivar. The Technological Matrix 3 has an initial herd of 598 animals, with lambs (as) finished in a confinement system, and allocation of the other categories of animals in Buffel grass pasture (Cenchrus ciliaris), considering more desirable zootechnical indices. The operational costs of technological matrices 1, 2 and 3 were calculated for the analysis of performance measures in determining a possible stable system. The technological matrix 1 obtained values of R$ 19.666,25, R$ 36.401,24 and R$ 37.654,79 for Effective Operating Cost (COE), Total Operating Cost (TOC) and Total Production Cost (CTP). In technological matrix 2, it found values of R$ 44.947,75 for COE, R$ 74.548,19 for COT and R$ 77.078,39 for CTP. In technological system 3, it obtained values of R$ 118.511,00 (COE), R$ 172.482,64 (COT) and R$ 176.152,84 (CTP). The values of fixed assets of the production systems were calculated, based on the cost of machinery and equipment, improvements and animals, estimating R$ 50.785,00 for technological matrix 1, R$ 151.385,00 of fixed assets for technological matrix 2 and R$ 250.840.00 for the technological matrix 3. Through the calculations obtained from the Gross Revenue (RB), Gross Margin (MB), Net Margin (ML), profitability and cost benefit ratio (BC), return evaluation values were observed and profitability in the production costs of technological matrix 2, representing R$ 170.563,39 for RB, R$ 52.052,39 for MB, R$ 1.919,25 for ML, R$ -5.589,45 for profitability and 0,97 for the index BC.