Sangrovit® em dietas para tilápias do Nilo

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: Melo, Iury Walysson de Amorim lattes
Orientador(a): Boscolo, Wilson Rogério lattes
Banca de defesa: Boscolo, Wilson Rogério lattes, Signor, Altevir lattes, Ballester, Eduardo Luis Cupertino lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Estadual do Oeste do Paraná
Toledo
Programa de Pós-Graduação: Programa de Pós-Graduação em Recursos Pesqueiros e Engenharia de Pesca
Departamento: Centro de Engenharias e Ciências Exatas
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://tede.unioeste.br/handle/tede/3903
Resumo: The phytogenic additives have shown positive results in chemicals replacement such as antibiotics in animal production, because it does not have cumulative effects on muscle and does not favor the selection of super-resistant bacteria. The experiment was conducted in two stages. The first stage aimed to evaluate the apparent digestibility coefficients (ADC) of protein, lipids, energy and mineral matter in 180 tilapia fish (40.0 ± 5.7g) fed with three diets (0; 100; and 200 mg kg-1) and four replications along 30 days. The second experiment aimed to determine the optimal inclusion of the additive through productive performance and by conducting hematologic, carcass centesimal composition analyses, as well as muscle and intestine morphometry. 240 fingerlings with average weight of 1.07 ± 0.07g were randomly distributed in 30 tanks of 138 liters, in recirculation system equipped with mechanical, biological filter and ultraviolet light to purify water for 60 days. The design was completely randomized with five treatments (0; 50; 100; 150 and 200 mg kg-1 additive) and six repetitions, each experimental unit consisting of eight fish. In both experiments the diets had approximately 38% crude protein and 3000 kcal of digestible energy. Growth performance (weight gain, feed conversion, daily weight gain, protein efficiency ratio, condition factor, survival, protein retention efficiency, visceral fat, hepatosomatic index, specific growth rate and lot uniformity), fish centesimal composition (moisture, crude protein, ether extract and ash), hematological indices, muscle fibers distribution and intestinal villus morphometry (villus height and epithelium thickness) were evaluated. The ADCs showed significant positive differences (p <0.05) between treatments. According to zootechnical, hematological, centesimal and histological parameters no differences were observed between treatments. We concluded that 100 kg-1 of Sangrovit® additive improves the apparent digestibility coeficient of protein, lipid, energy and mineral matter for tilapia.