Desempenho,composição e utilização de nutrientes no híbrido (cachara x jandiá) alimentados com variações de carboidratos e lipídio na dieta

Detalhes bibliográficos
Ano de defesa: 2012
Autor(a) principal: Bernardes, Célio Luiz lattes
Orientador(a): Silva, Rodrigo Fortes da lattes
Banca de defesa: Sousa, Rodrigo Morgado Ramalho de lattes, Camargo, Antônio Cléber da Silva lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Jose do Rosario Vellano
Programa de Pós-Graduação: Programa de Mestrado em Ciência Animal
Departamento: Zootecnia e Recursos Pesqueiros
País: BR
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://tede2.unifenas.br:8080/jspui/handle/jspui/132
Resumo: This study evaluated the influence of different carbohydrate/lipid ratios (CHO:L) in the diet of hybrid catfishes, carnivorous Pseudoplastitoma reticulatum x omnivorous Leiarius marmoratus, on the performance, body composition and nutrient utilization. Four isoproteic diets were formulated containing 43% crude protein, with increasing levels of lipids with CHO: diet I, 1.3; diet II, 1.1; diet III, 0.9; diet IV, 0.8. The fishes were fed at 5% of the living body weight (LBW) for the triplicate groups of 6 fishes (18 ± 1.5 g) during 8 weeks. Although the final weight and the absolute weight gain decreased with the increase of lipids in the diet, no significant difference was found in the ration daily consumption (DC) between the treatments. In addition, the viscerosomatic index (VSI) and the hepatosomatic index (HIS) showed no statistic difference between the dietary treatments. Protein efficiency retention (PER), lipid efficiency retention (LER) and protein gain (PG) were higher in the 1.3 CHO:L group, but no significant difference was found between the 0.9 and 0.8 CHO:L groups. In conclusion, high CHO:L ratios around 1.3 produced great benefit due to the best growth performance in the studied hybrid model.