Efecto de la modulación inmunológica en la supervivencia del cultivo de camarón Litopenaeus vannamei
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2013
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Universidad de Guayaquil. Facultad de Ciencias Naturales Maestría en Ciencias con énfasis en manejo sustentable de Recursos Bioacuáticos y el Medio ambiente. Magister en ciencias
Resumen
Se realizó un estudio donde se midió el efecto de la modulación inmunológica, en la concentración de hemocitos del camarón Litopenaeus vannamei.La experimentación se desarrolló por un periodo diez semanas. Los tratamientos utilizados consistieron en dosis de 2g,4g y 6g de inmunomodulador por kilogramo de alimento balanceado, además del control sin inmunomodulador. Se alimentó diariamente a los camarones, regulando la cantidad mediante el uso de comederos de
control.Semanalmente, desde las cuarta hasta la decimotercera semana,se determinó el número total de hemocitos. Adicionalmente se llevaron registros semanales de peso promedio y porcentaje de camarones aparentemente enfermos. Al final de la prueba se determinó la biomasa, peso promedio final, supervivencia y factor de conversión alimentaria para cada unidad experimental.Se encontraron diferencias significativas(p<0.05)en la concentración de hemocitos entre el tratamiento de 6g/kg y el control,pero no entre este y los otros tratamientos, ni entre estos últimos y el control. Se detectó un efecto altamente significativo (p< 0.01) de la semana de muestreo, el cual aparentemente estaba relacionado a factores ambientales. No se encontró diferencias significativas (p=0.05) entre las piscinas alimentadas con el inmunomodulador y las de control,para: biomasa, peso promedio final, supervivencia, ni factor de conversión alimentaria.
A study where the effect on immune modulation were measured concentration in hemocytes of Litopenaeus vannamei.La experimentation developed for a period ten weeks are generally performed. The treatments consisted of doses of 2g, 4g and 6g of immunomodulatory per kilogram feed, as well as control without immunomodulator. Were fed daily shrimp,regulating the amount by using feeders control.Semanalmente, from the fourth to the thirteenth week,the total number of hemocyte was determined. Additionally weekly logs of average weight and percentage of diseased shrimp apparently took. At the end of the test biomass, final mean weight, survival and food conversion factor for each unit was determined experimental.Se significant differences(p< 0.05) in the concentration of hemocytes 6g/kg between treatment and control, but between this and the other treatments, nor between them and the control. A highly significant (p < 0.01) in the week of sampling, which was apparently related to environmental factors was detected.Biomass, final mean weight,survival,and feed conversion factor : No significant differences ( p= 0.05) between the pools fed the immunomodulatory and control, was found to
A study where the effect on immune modulation were measured concentration in hemocytes of Litopenaeus vannamei.La experimentation developed for a period ten weeks are generally performed. The treatments consisted of doses of 2g, 4g and 6g of immunomodulatory per kilogram feed, as well as control without immunomodulator. Were fed daily shrimp,regulating the amount by using feeders control.Semanalmente, from the fourth to the thirteenth week,the total number of hemocyte was determined. Additionally weekly logs of average weight and percentage of diseased shrimp apparently took. At the end of the test biomass, final mean weight, survival and food conversion factor for each unit was determined experimental.Se significant differences(p< 0.05) in the concentration of hemocytes 6g/kg between treatment and control, but between this and the other treatments, nor between them and the control. A highly significant (p < 0.01) in the week of sampling, which was apparently related to environmental factors was detected.Biomass, final mean weight,survival,and feed conversion factor : No significant differences ( p= 0.05) between the pools fed the immunomodulatory and control, was found to
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INMUNOLOGÍA, BIOLOGÍA MARINA, ANIMALES MARINOS