Teses em Ciência Animal (Doutorado) - PPGCAN/Castanhal
URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/4665
O Doutorado em Ciência Animal teve início em 2008, com início da primeira turma em 2009 junto à CAPES/MEC e funciona no Programa de Pós-Graduação em Ciência Animal (PPGCAN) do Campus Universitário de Castanhal (CCAST) da Universidade Federal do Pará (UFPA), Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) e Universidade Federal Rural da Amazônia (UFRA).
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Item Acesso aberto (Open Access) Diagnóstico das deficiências de macro e micro minerais em búfalas (Bubalus bubalis) provenientes da Ilha de Marajó, Estado do Pará(Universidade Federal do Pará, 2014-06-30) OLIVEIRA, Carlos Magno Chaves; BARBOSA NETO, José Diomedes; http://lattes.cnpq.br/1516707357889557This study aimed to evaluate in buffaloes of the Marajó Island serum concentrations and phosphorus in bones, the percentage of ashes and the specific density of the bones, the levels of copper, cobalt, selenium, zinc and iron before and after selective mineral supplementation. For this study, 14 crossbred buffaloes of Murrah and Mediterranean aged between 18 and 36 months were used. The average values of phosphorus, before supplementation, were 5, 68 mg/dl ± 1.18 in serum and 16.53% ± 0.53 in the bones. The percentage of ashes in bones was 59.95% ± 1.96 and the specific bone density was 1,52 g/cm3 ± 0.32, which demonstrates a phosphorus deficiency in animals raised on the island of Marajó. The average copper values were 7.75 ± 1.73 ppm, the cobalt ± 0.17 0.40 ppm, the zinc of 88.01 ± 35.03 ppm, the 0.22 ppm selenium and iron ± 0.12 1395.72 ± 764.74 ppm. These results indicate a deficiency of copper, zinc and selenium, cobalt and appropriate values of excess iron in the liver. After supplementation for a period of seven months the phosphorus values were 6.61 mg / dl in serum ± 0.87 and 16.90 ± 0.56% in the bones. The percentage of ash was 60.30% ± 0.95 and the specific bone density was 1.71 g/cm3 ± 0.21. These values characterize a significant increase in the concentrations of P in blood serum, in the percentage of P in the ashes and on specific bone density (P < 0.05), however there wasn't a significant increase in the percentage of ash. The average increase in the values of P in the bones and the ashes did not reach heights of normality, however 28.6% of the animals had normal serum P values, 50% had normal values of P in the ashes and 64.3% of the animals had specific normal bone density. There was no response to supplementation in relation to the percentage of ash. Regarding micro minerals, after supplementation values were 205.41 ± 80.54 ppm for copper, 0.40 ± 0.22 ppm for cobalt, 75.71 ± 11.74 ppm for zinc, 1.30 ppm ± 1.34 for selenium and 826.48 ± 394.76 ppm for iron, which shows a significant increase (P <0.05) concentrations of copper and selenium and a significant decrease in the amounts of iron (P <0, 05). There was no response to supplementation in relation to the percentage of ashes. Regarding micro minerals, after supplementation values were 205.41 ± 80.54 ppm for copper, 0.40 ± 0.22 ppm for cobalt, 75.71 ± 11.74 ppm for zinc, 1.30 ppm ± 1.34 for selenium and 826.48 ± 394.76 ppm for iron, which shows a significant increase (P <0.05) concentrations of copper and selenium and a significant decrease in the amounts of iron (P <0, 05). There was no recovery of zinc and cobalt concentrations which remained within the normal range. Failure to increased concentrations of zinc in the liver after supplementation may have occurred because of the high concentrations of calcium in Brachiaria brizantha cv Marandu used in animal nutrition.Item Acesso aberto (Open Access) Emulsificante em dietas para frangos de corte com diferentes fontes lipídicas(Universidade Federal do Pará, 2015-11-04) TAVARES, Fernando Barbosa; LIMA, Kedson Raul de Souza; http://lattes.cnpq.br/7607189403583641; FATURI, Cristian; http://lattes.cnpq.br/8389692203753236This study aimed to evaluate the effects of diets containing different lipid source and the inclusion of an emulsifier (soy lecithin and polyethylene glycol ricinoleate) for broilers. Article I aimed to evaluate the influence of different fat sources in the metabolization of nutrients and serum broiler profiles, with the addition of emulsifier. 336 chicks were used in a 4x2 factorial arrangement, with eight replications and four lipid sources (soybean oil, Poultry Oil, Fish Oil and Tallow Beef) and 2 types of inclusions (not including the product and 5 g / kg emulsifier). Proceeded metabolic tests by the total collection method. The data were subjected to analysis of variance in SAS and the means were compared by Tukey test, the significance of P <0.05. No difference was observed for feed intake, metabolization coefficient of dry matter and crude protein. The coefficient of metabolizable ether extract (CMEE) was lower in the diets of fat (P <0.001). The lipid source modifies the metabolization of diets. The emulsifier, the tested values, does not modify the metabolization of ingredients and does not modify the HDL serum parameters, LDL, Cholesterol and Triacilglerol. For Article II aimed to test how the addition of emulsifier can alter the performance parameters, metabolization, carcass composition and economic viability for broiler diets with poultry oil and beef tallow. Diets with poultry oil (OA) or tallow (SB), in treatments to control (CON), other diets with reduction of 0.83 MJ / kg of metabolizable energy (RED) and diets with reduced MS and inclusion of 0, 1% inclusion of emulsifier (Emul). Diets with poultry oil performed better on average weight and feed intake, resulting in a reduction in the amount of crude protein in the carcass of 58.3% to 56.1% in diets with SB and OA respectively. The results indicated that the emulsifier reduced metabolization of ether extract, but increased the EMA in the diet with beef tallow in 0.93 MJ / kg. The emulsifier added in the form proposed only increased the cost of diet without significant result on performance, metabolism and body composition of broilers.