Abstract

MARTINEZ-CASTILLO, Sandra L; QUINTERO PINTO, Luis G  and  PENA -OSORIO, Leidy J. Evaluation of the zootechnic performance of Piaractus brachypomus fry feded with diets that provides different levels of energy. Orinoquia [online]. 2018, vol.22, n.2, pp.215-223. ISSN 0121-3709.  https://doi.org/10.22579/20112629.529.

The purpose of this experiment was to evaluate the productive performance of Piaractus brachypomus fry, fed with isoproteic diets (34%) with seven levels of gross energy (EB) (3750, 3865, 3980, 4095, 4210, 4325,4440 Kcal / kg) with the next relations of gross energy / crude protein: 11,03; 11,37; 11,74; 12,04; 12,38; 12,72 and 13,06 Kcal EB / g PB. The experimental design was completely random, with four repetitions. The experiment lasted 60 days. A batch of 280 fry were used (initial average weight 1,89 ± 0,14 g) in number of 10 fishes per aquarium. The effect of the diets was evaluated in terms of final weight (PF), weight gain (GP), feed intake (CA), feed conversion rate (TCA), specific growth rate (TCE), protein consumption (CP), protein efficiency ratio (TEP), energy consumption (CE), energy efficiency rate (TEE) and an analysis carcasses of 10% of the population on day 60 of the experiment. Finally, the data were subjected in a variance analysis (ANOVA). It concluded that the minimum level of energy that meets the requirements of this specie is 3980 Kcal/ kg with a ratio of EB: PB 11,74 EB kcal / g of PB being statistically (P>0,05) similar to higher levels tested.

Keywords : Fry nutrition; Piaractus brachypomus; energy; weight gain.

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