El efecto de dos porcentajes de recirculación de agua en el cultivo de camarón litopenaeus vannamei

The present work was carried out in the shrimp farm Rodlarok, and its objective was to evaluate the effect of two variable recirculation of water quality parameters of abiotic variables (pH, dissolved oxygen in the water, temperature, turbidity and salinity) weight of shrimp, costs and profits in aquaculture ponds in this system. The research was conducted in the period from April to August. The treatments were 20% of recirculated water (pools 1, 2, 3 and 4) and 40% (tanks 5, 6, 7 and 8). For sampling weighed 100 shrimp per tank and week by simple random selection. Abiotic variables such as temperature, dissolved oxygen, water pH, salinity and turbidity were measured, in addition to costs and profits. Analysis of variance after verification of the assumptions of independence and distribution of data and homogeneity of variance were performed. For the hire of hypotheses comparison of means through Samples T in the variable weight and T test for independent samples in relation to the abiotic variables and the SPSS statistical package was used test was performed. Abiotic variables oxygen AM and PM, temperature, turbidity and pH and the weight of the shrimp no statistically significant differences when the tanks were subjected to two percentages (20 and 40%) water recirculation, contrary to salinity which was obtaining statistically different average for 20% (20.2 ppm) and 40% (21.1 ppm). From the economic point of view the treatment of 40% water recirculation presented a better result because had a profit of $ 711.96 superior compared to when 20% water exchange was used.

• Hlavní autor: Ulloa Tello, Ronald Fabián (author)
• Médium: bachelorThesis
• Jazyk: spa
• Vydáno: 2015
• Témata: PORCENTAJES; RECIRCULACIÓN DE AGUA; VARIABLES ABIÓTICAS; PESO DE LOS CAMARONES
• On-line přístup: http://repositorio.utmachala.edu.ec/handle/48000/2009