Monografias, Dissertações e Teses
URI permanente desta comunidadehttps://repositorioacademico.universidadebrasil.edu.br/handle/123456789/1
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Resultados da Pesquisa
Item Uso de fontes orgânica e inorgânica de enxofre na dieta de bovinos(Universidade Brasil, 2022) Cirelli, Lívia; Dian, Paulo Henrique MouraBeef cattle is responsible for a large portion of food production in the world. One of the main strategies to improve cattle breeding is feeding, with minerals playing an important role for diet supplementation. Sulfur is characterized as a macromineral, due to its requirement in cattle, and has several vital functions, therefore, it must often be supplemented in the diet. The present study aimed to compare the inorganic source of sulfur (sulfur flower) with an organic source (sulfur chelate) and their different levels of supplementation performance of ½ Nellore x ½ Aberdeen Angus heifers submitted to a feed lot system.Thus, 24 heifers aged between 13 and 16 months, with an average initial weight of 230 kg, were randomly distributed into four treatments: recommended daily dose (6.72 g) of sulfur from the sulfur flower; recommended daily dose (6.72 g) from sulfur chelate; 50% of the recommended dose of sulfur (3.36 g) from sulfur chelate and 75% of the recommended daily allowance (5.04 g) from sulfur chelate. During the 90-day experimental period, a diet consisting of 81% concentrate and 19% forage was provided in an amount equivalent to 2% of the live weight in the dry matter of each heifer. There were no significant differences between treatments for animal performance, feed conversion and feed efficiency. Treatment with an organic source of sulfur at half the recommended daily dose showed a reduction of 29.7% in fecal sulfur excretion. In conclusion, the use of half the dose of sulfur in the organic form (sulfur chelate) can be an option to reduce the inclusion of the mineral element in the diet of beef cattle, since the animals submitted to half the dose of sulfur chelate reached the same animal performance of the group submitted to the recommended daily dose of the inorganic source of sulfur.Item Uso parenteral de cromo orgânico em bezerras da raça holandesa(Universidade Brasil, 2022) Silva, Cairon Rony Bezerra da; Melo, Gabriel Maurício Peruca de; Melo, Wanderley José deThis study aimed to evaluate the effects of different doses of parenteral organic chromium in 24 Holstein heifers. The experiment was carried out in a completely randomized design, with 3 treatments (T1. Control - without parenteral chromium supplementation; T2. Parenteral supplementation of organic chromium - 100 mg/animal every 28 days; T3. Parenteral supplementation of chromium in the organic form - 200 mg per animal applied at intervals of 28 days) and 8 repetitions. The experiment lasted 56 days, with weighing of the experimental animals every 28 days. The parameters of daily weight gain and total weight gain were evaluated. Chromium supplementation promoted an improvement in the weight performance of the heifers, with an average daily weight gain of approximately 30% higher than in the control group, regardless of the evaluated dose. It was concluded that organic chromium, independent of a supplementary way, for heifers of the breed allows additional weight gain.Item Complexos de Vanádio, de uso oral, como agente hipo-glicemiante(Universidade Brasil, 2016) Ribeiro, Simone Ferro; Melo, Gabriel Maurício Peruca de; Dian, Paulo MouraItem Complexo Cromo Metionina como agente hipoglicemiante em camundongos Swiss obesos(Universidade Brasil, 2016) Santos, Janaina Regina Rigobello Imediato da Silva; Bertipaglia, Liandra Maria Abaker; Melo, Gabriel Maurício Peruca deItem Suplementação de Cromo Metionina em camundongos Swiss obesos: hematologia(Universidade Brasil, 2017) Daniel, Mauro Roberto; Melo, Gabriel Mauricio Peruca de; Bertipaglia, Liandra Maria Abaker