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 Validação de equações de predição da composição química da carcaça de ovinos Santa Inês(2021-12-03) Soares, Raquel Cristina Carvalho; Véras, Antonia Sherlânea Chaves; http://lattes.cnpq.br/0074248045711399; http://lattes.cnpq.br/1279928414920644With the growth of sheep farming in Brazil, further studies in the field of nutrition are needed in search of better carcasses with a view to greater meat production and better quality meat. From this premise, equations were proposed to estimate carcass chemical composition in ruminants. However, one of the most widely used methods is the section between the 9th and 11th ribs, which was initially tested on taurine, and has also been evaluated for predicting the chemical composition of the sheep carcass. In one study, equations were proposed to predict the chemical composition of the carcass of sheep using data from different experiments conducted, using among other independent variables the section of the 9th and 11th ribs. However, these equations need to be validated. Therefore, the objective was to evaluate the prediction equations of: water; protein (PB); ether extract (EE) and energy (EN) in the carcass of Santa Inês sheep. The carcass water, EE and EN contents were satisfactorily estimated, proving to be accurate and accurate models. However, to estimate the CP contents, the model was accurate, but not very precise, needing adjustments to better estimate the carcass protein of Santa Inês non-castrated male sheep.Item Predição da composição física e química da carcaça por meio da perna em ovinos Santa Inês(2020-10-30) Souza, Elder Bruno de; Véras, Antonia Sherlânea Chaves; http://lattes.cnpq.br/0074248045711399; http://lattes.cnpq.br/1503874613747770The objective of the present work was to evaluate whether the physical and chemical compositions of the leg cut can predict the physical and chemical compositions of the Santa Inês sheep carcass and generate simple linear equations for the prediction of these components in the carcass. 42 male Santa Inês lambs were used, un-castrated, with BW 19.48 kg ± 1.86 kg, and aged between 6 and 7 months, housed in individual pens provided with feeders and drinkers, and fed with a roughage:concentrate ratio of 50:50 in diet. After 14 days of adaptation of the animals to management and diet, four animals were slaughtered, and the others after 63 experimental days. Before slaughtering, all animals were weighed after fasting solids for 16 hours to obtain body weight at slaughter (SBW). After slaughter and obtaining the carcass, it was cooled to 4 ° C for 24 hours, for later obtaining the cold carcass weight (CCW). In a refrigerated environment, the carcasses were divided in the dorsal midline to obtain two half carcasses, sectioning the left half carcass in the meat cuts neck, palette, rib, saw, loin and leg that were weighed, placed in plastic bags, vacuum packed and frozen for further dissection, removed from the freezer and thawed in a refrigerator at 4 ° C. The dissection aimed to separate and quantify (g) the physical components of muscle, fat, bones and other tissues. The physical composition of the half carcass was obtained by adding the physical components of the leg and the rest of the carcass. The correlations between the physical and chemical components of the reconstituted carcass and the respective physical and chemical compositions of the leg were evaluated. The criteria adopted for the classification of the correlation coefficients (r) were strong (r> 70%), moderate (30% < r < 70) and weak <30%. The correlated data (P <0.05) were used to propose parameters of simple linear equations to predict the physical and chemical components of Santa Inês sheep carcass from these constituents in the leg section. There was a moderate to strong correlation between the tissue and chemical components of the cut leg and their respective components in the carcass. Simple linear equations were proposed to predict these components in the carcass. The physical and chemical composition of Santa Inês sheep carcass can be predicted by means of the physical and chemical composition of the leg.