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Revista Computadorizada de Producción Porcina Volúmen 7 Número 3 (2000)
calidad de los peces que se cultiven. Se recomendó continuar con el estudio de este tipo
de sistema utilizando residuales tratados por otras vías y llevar a cabo un estudio
parasitológico del mismo.
Palabaras clave: acuicultura, alevines, estanques acuícolas, residuales porcinos,
microbiología
MICROBIOLOGICAL EVALUATION OF FISH PONDS FERTILIZED WITH PIG
SLURRIES
SUMMARY
Three lagoons of 0.3 ha and 1.5 m of depth each one, were used. Two evaluations were
carried out with 26 790 and 26 830 fingerlings (grass carp, silver carp, big-head carp and
tilapia) planted in each lagoon. The difference between two evaluations was the kind of
residual water to fertilize the lagoons. In the evaluation 1 primary treatment residual water
was used and tertiary treatment residual water in the evaluation 2. The microbiological
analysis included three aspects: The microbiological analysis of two residual waters to
fertilize this system. The sanitary parameters were: total count, coliforms, Anaerobic
germs, Salmonella sp, mold and determination of pH. The second aspect was the quality
analysis of lagoon waters and for this purpose the NMP (More Probable Number)
technique was used. The third aspect included the sanitary evaluation of the collected
fishes. They were evaluated according to the food Cuban guidelines. Microbiological data
were transformed to log10 (x + 1), and then analyses of variance and lineal regressions
were conducted for each index.
There were significant differences between the two residual water types for coliforms and
Salmonella counts. The results of NMP were higher than 1000/100mL in evaluation 1 and
lower than 600/100mL in evaluation 2. In fish sanitary evaluation there were levels of
7.0418 and 0.7677 for fecal coliforms in evaluation 1 and 2 respectively. There was no
presence of Salmonella sp in this examination.
It was concluded that the fertilization with tertiary treatment residual is the optimal way to
improve the microbiological quality of water and the sanitary conditions of collected fishes
in this system. It was recommended to continue the study of this system using pig slurry
treated by others biological ways and to carry out a parasitological study.
Key words: aquaculture, fingerlings, lagoons, pig slurry, microbiology
El texto completo de la tesis antes mencionada consta de 51 páginas, y puede consultarse
en las bibliotecas del Instituto de Investigaciones Porcinas (Punta Brava, La Habana,
Cuba) y del Centro Nacional de Investigaciones Científicas (La Habana, Cuba).
Compiladores: EC y JL
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