Resumo

LAZZARI, Rafael et al. Stocking density in growth, composition and body lipid profile of jundiá. Cienc. Rural [online]. 2011, vol.41, n.4, pp. 712-718. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782011000400027.

The aim of this research was to evaluate growth and body composition of jundiá farmed at different stocking densities (SD: 4.2, 6.4, 8.6 and 10.8kg m^-3) in a water re-use system. During 120 days, 420 fish were fed near to satiation once a day. It was observed that in the highest SD, the individual fish weight was lower, however the biomass per tank increased (P<0.05). The best feed conversion ratio (1.69) and intraperitoneal fat (3.92%) were observed in fish subjected to density of 4.2kg m^-3. The body protein was affected by SD. Saturated fatty acids decreased and unsaturated fatty acids increased according to the increase of SD. It was concluded that stocking density influences the final size and yield per volume of jundiá.

Palavras-chave : fatty acids; biomass; rearing; Rhamdia quelen; water re-use system.