Efecto de la modulación inmulógica en la supervivencia del Cultivo de Camarón Litopenaeus vannamei.
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2013
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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 was performed which measured the effect of immune modulation in hemocytes concentration for Litopenaeus vannamei . The experiment was carried out for a period of ten weeks. The treatments consisted in doses of 2g, 4g and 6g of inmunomodulador per kilogram feed, as well as control without inmunomodulador. Shrimp was fed daily, regulating the amount using control feeders. Every week, from the fourth to the thirteenth week, the total number of hemocytes was determined. Additionally, weekly average weight and percentage of apparently sick shrimp where recorded. At the end of the test; biomass, final mean weight, survival and feed conversion ratio where determined for each experimental unit. Significant differences (p <0.05) where found in the concentration of hemocytes between the 6g/kg treatment, and the control, but not between this and the other treatments, or between the later and control. A highly significant effect (p< 0.01) was detected for sampling week, which apparently was related to environmental factors. No significant difference (p= 0.05) between the control and inmunomodulador ponds was found for: biomass, final mean weight, survival, and feed conversion.
A study was performed which measured the effect of immune modulation in hemocytes concentration for Litopenaeus vannamei . The experiment was carried out for a period of ten weeks. The treatments consisted in doses of 2g, 4g and 6g of inmunomodulador per kilogram feed, as well as control without inmunomodulador. Shrimp was fed daily, regulating the amount using control feeders. Every week, from the fourth to the thirteenth week, the total number of hemocytes was determined. Additionally, weekly average weight and percentage of apparently sick shrimp where recorded. At the end of the test; biomass, final mean weight, survival and feed conversion ratio where determined for each experimental unit. Significant differences (p <0.05) where found in the concentration of hemocytes between the 6g/kg treatment, and the control, but not between this and the other treatments, or between the later and control. A highly significant effect (p< 0.01) was detected for sampling week, which apparently was related to environmental factors. No significant difference (p= 0.05) between the control and inmunomodulador ponds was found for: biomass, final mean weight, survival, and feed conversion.
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INMUNOMODULADOR, CAMARÓN