Efecto de la utilización del Ácido Húmico y el Probiótico HGS-7 en un sistema de cultivo semi-intensivo de camarón Litopenaeus vannamei en Pedernales, Provincia de Manabí - Ecuador.
Fecha
2022
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Facultad de Ciencias Naturales. Universidad de Guayaquil
Resumen
Ecuador es uno de los principales productores y exportadores mundiales de camarones cultivados en estanques, donde tenemos condiciones climáticas óptimas para el crecimiento exitoso y buenos rendimientos del Litopenaeus vannamei. Se analizaron los efectos que producen el ácido húmico y el probiótico HGS-7 en el cultivo del camarón blanco Litopenaeus vannamei, se evaluaron parámetros fisicoquímicos y biológicos; la
abundancia de gregarinas presente en el intestino y ampolla rectal; crecimiento y la sobrevivencia, durante tres ciclos (cada una con una duración de 11 semanas respectivamente). Se utilizaron dos piscinas y se plantearon dos tratamientos, uno como control y el otro con el agregado de ácido húmico y el probiótico HGS-7. Los resultados de los parámetros físicos-químicos mostraron diferencias en el oxígeno, nitrito y amonio con promedios para el control y tratamiento: oxígeno (5,31-3,57 mg/L), nitrito (0,05-0,01 mg/L) y amonio (0,12-0,37 mg/L); en la abundancia de gregarinas en el intestino y ampolla rectal tuvieron diferencias con promedios: intestino (11,38-6,82) y ampolla rectal (9,75-4,57); y con respecto al crecimiento y sobrevivencia no se
mostraron diferencias, sin embargo, el crecimiento lineal, FCA, libras totales e IEP, fueron mejores para el tratamiento con respecto al control. Por tanto, la adición de ácidos húmicos y el probiótico HGS-7 no inciden dentro de los rangos de los parámetros físicos-químicos y biológicos, disminuyen de una manera eficiente la
presencia de gregarinas sin perjudicar en el crecimiento del Litopenaeus vannamei, e indican una mejora en los parámetros productivos.
Ecuador is one of the world’s leading producers and exporters of shrimp grown in ponds, where we have optimal climatic conditions for the successful growth and good yields of Litopenaeus vannamei. Analyzed the effects produced by humic acid and probiotic HGS7 in the culture of white shrimp Litopenaeus vannamei, evaluated physicochemical and biological parameters; the abundance of gregarines presents in the intestine and rectal ampoule; growth and survival over three cycles (each lasting 11 weeks respectively). Two pools were used, and two treatments were proposed, one as a control and the other with the addition of humic acid and the probiotic HGS-7. The results of the physical-chemical parameters showed differences in oxygen, nitrite and ammonium with averages for control and treatment: oxygen (5.31-3.57 mg/L), nitrite (0.05-0.01 mg/L) and ammonium (0.12-0.37 mg/L); in the abundance of gregarines in the intestine and rectal ampoule there were differences with averages: intestine (11,38-6,82) and rectal ampoule (9,75-4,57); and with respect to growth and survival there were no differences, however, linear growth, FCA, total pounds and IEP, were better for treatment with respect to control. Therefore, the addition of humic acids and the probiotic HGS-7 do not fall within the ranges of the physical-chemical and biological parameters, efficiently reduce the presence of gregarines without affecting the growth of Litopenaeus vannamei and indicate an improvement in productive parameters.
Ecuador is one of the world’s leading producers and exporters of shrimp grown in ponds, where we have optimal climatic conditions for the successful growth and good yields of Litopenaeus vannamei. Analyzed the effects produced by humic acid and probiotic HGS7 in the culture of white shrimp Litopenaeus vannamei, evaluated physicochemical and biological parameters; the abundance of gregarines presents in the intestine and rectal ampoule; growth and survival over three cycles (each lasting 11 weeks respectively). Two pools were used, and two treatments were proposed, one as a control and the other with the addition of humic acid and the probiotic HGS-7. The results of the physical-chemical parameters showed differences in oxygen, nitrite and ammonium with averages for control and treatment: oxygen (5.31-3.57 mg/L), nitrite (0.05-0.01 mg/L) and ammonium (0.12-0.37 mg/L); in the abundance of gregarines in the intestine and rectal ampoule there were differences with averages: intestine (11,38-6,82) and rectal ampoule (9,75-4,57); and with respect to growth and survival there were no differences, however, linear growth, FCA, total pounds and IEP, were better for treatment with respect to control. Therefore, the addition of humic acids and the probiotic HGS-7 do not fall within the ranges of the physical-chemical and biological parameters, efficiently reduce the presence of gregarines without affecting the growth of Litopenaeus vannamei and indicate an improvement in productive parameters.
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CAMARONES, ÁCIDO HÚMICO, FISICOQUÍMICOS, CRECIMIENTO