Influence of diet processing form on performance and survival of Nile tilapia during sex revert phase

[摘要] This work was carried out at Aquicultura Laboratory of Maringá State University, to evaluate the different processing form of diets on Nile tilapia fry performance and survive, during sexual revert phase. Was utilized 540 fry distributed, on completely randomized design with three treatments and six replications, in eighteen 54 L aquarium and one aquarium with 30 Nile tilapia fry was considered an experimental unit. The experimental period was 28 days with average temperatures of 21.9 ± 0.10C in the morning and 22.7 ± 0.30C in the afternoon. The diet was formulated (38.6% of digestible protein and 3800 kcal/kg digestible energy) differing only about processing form (crumble [MD], meal [ND] and pasty [PD]). No difference was observe to final weight and body condition, but to biomass production, the fry submitted of ND treatment was higher than MD and PD treatments, that were equal. To survive ND and PD were equal and higher than MD treatment. It was concluded that, with 0.5 mm of mealling degree, the meal diets was most adequate to Nile tilapia fry, during sex revert phase.

[学科分类] 兽医学

[关键词] /font> diet processing;fry;Nile tilapia;meal ration;crumble ration;pasty ration    Introdução A tilapicultura vem se mostrando uma ótima alternativa para a piscicultura de água doce e estuarina