Performance of sábalo (Prochilodus lineatus) in polyculture with pacu (Piaractus mesopotamicus)

Paola Della Rosa, Julio Cesar Ortiz, Antonio de la Cruz Cáceres, Sebastián Sánchez, Juan Pablo Roux


The aim of this work was to compare and evaluate the growth of sábalo in monoculture, in contrast to polyculture of sábalo/pacú for a period 11 months. Four treatments were used, Control (sábalo 100/0), T1 (sábalo-pacú 50/50 proportion), T2 (sábalo-pacú 33/67 proportion), T3 (sábalo-pacú 25/75 proportion), located in ground ponds fertilized with alfalfa bales at 300 g m-2 surface. Balanced food was provided daily considering 5% of the biomass. Water quality parameters were registered, in addition to performing biometrics monthly. The physico-chemical water quality parameters remained within appropriate values for both species in every pond. Zootechnical variables were analyzed: coefficient of specific growth, productivity, survival and live weight. The weight variable of T3 was the highest, significantly different of the control (P < 0.05). The values of the remaining variables, were higher than in the other trataments, but without significant differences (P < 0.05). These results indicate that sábalo has a better development when is bred with pacú in a 25/75 ratio. This fact could be associated with improved trophic efficiency of the pond. The sábalo uses the remain food deposited in the sediment, wasted by pacú. This proportion let to obtain greater weight gain, survival and total productivity, in contrast to a system of breeding in monoculture.

Della Rosa P, Ortiz J, Cáceres A, Sánchez S, Roux J. Performance of sábalo (Prochilodus lineatus) in polyculture with pacu (Piaractus mesopotamicus). Lat. Am. J. Aquat. Res.. 2017;44(2). Available from: doi:10.3856/vol44-issue2-fulltext-14 [Accessed 20 Jan. 2019].
Della Rosa, P., Ortiz, J., Cáceres, A., Sánchez, S., & Roux, J. (2017). Performance of sábalo (Prochilodus lineatus) in polyculture with pacu (Piaractus mesopotamicus). Latin American Journal of Aquatic Research, 44(2). doi: