Growth of Nile tilapia post-larvae from broodstock fed diet with different levels of digestible protein and digestible energy

Revista Brasileira de Zootecnia

Silia Maria De Negreiros Sousa²  André Freccia²  Lilian Dena Dos Santos¹  Fábio Meurer¹  Lucélia Tessaro¹  Robie Allan Bombardelli¹ 

[1] ,Unioeste Graduate Program in Animal SciencePR ,Brazil

关键词: fry;    nutrition;    Oreochromis niloticus;    reproduction;    sex reversal;   

DOI  :  10.1590/S1516-35982013000800001

来源: SciELO

【 摘 要 】

This study was carried out to evaluate the influence of different levels of digestible energy and digestible protein in diets of Nile tilapia (Oreochromis niloticus) broodstock on offspring growth during sex reversal stage. A total of 2,700 post-larvae (8.2±0.001 mg) derived from breeders fed nine diets with distinct levels of digestible protein (28, 34 and 40% DP) and digestible energy (2,800; 3,400; and 4,000 kcal DE.kg-1) were stored in twenty-seven 70 L tanks. After 30 days of growth, their average final weight (AFW, g), average weight gain (AWG, g), final standard length (SL, cm), condition factor (CF), specific growth rate (SGR, %/day), stock uniformity (UNI, %), survival (SUR, %) and sex reversal rate (SRR, %) were measured. Although female nutrition is thought to influence the performance or quality of progeny during early life stages, no influence of diets supplied to broodstock was detected on any parameter. Nonetheless, the offspring presented commercially satisfactory growth rates. Thus, diets containing 28% of digestible protein and 2,800 kcal of digestible energy.kg of diet-1 can be used to feed Nile tilapia broodstock without jeopardizing offspring performance during the sex reversal phase.

【 授权许可】

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