Evaluación de dietas balanceadas con la adición de eichhornia crassipes y probióticos para reducir la carga bacteriana en oreochromis sp.

Abstract

The use of nutritional additives in the culture of aquatic organisms is essential to help in the growth and health of the animals. The objective of the present study was to evaluate a balanced diet with the addition of Eichhornia crassipes meal and probiotic to reduce the concentration of total bacteria in Oreochromis sp. A total of 60 animals with an average weight of 25,75 g were distributed in 4 treatments T1 (Balanced), T2 (Balanced + 2% Eichhornia crassipes meal), T3 (Balanced + Probiotic) and T4 (Balanced + 2% Eichhornia crassipes meal + Probiotic) and fed for 60 days. Microbiological analysis was carried out with the method of serial dilution from 10-3 and plate seeding on TM 1482 agar selective for Aeromonas and Pseudomonas. Regarding the increase in body mass and survival in the fish, the best treatment was the incorporation of probiotics, and Treatment 4 for the reduction of bacteria. All treatments did not show significant (p>0.05) but if numerical, going from 1,4 x 107 CFU/g to 7,7 x 106 CFU/g, which represents a 45% reduction, surpassing the control that only showed a 7,14% reduction. These results suggest that the supplementation of beneficial bacteria and Eichhornia crassipes meal, known as water hyacinth, could contribute to the growth, survival and health of the animals, which means a positive impact on the sustainable production of aquatic organisms.