Influencia de la tempertatura del agua sobre el comportamiento biológico de la trucha arco iris (oncorhynchus mykiss) producida en atillo Gad - Guamote.

Abstract

The research was carried out in the Atillo Piscicultural Unit of the Municipal Autonomous Decentralized Government of the Guamote Canton, (GADMC-Guamote), with the objective of reducing the trout production time, for this purpose the greenhouse fattening system was implemented. The test was carried out with two fattening systems, divided into four repetitions with 25 trout, with a total of 200 fish in theexperiment. The variation of the temperature was measured every day in both treatments, the weights and sizes were taken each week, based on the biomass theamount of food consumed was calculated, finally the feed conversion, mortality and Benefit/Cost were calculated. Subjected to ananalysis of variance (ADEVA) and separation of means according to the Tukey methodology at a level of significance (P ≤0.01 and ≤0.05). Developing the analysis, the temperature of the wáter under greenhouse increased 4 °C, reaching 11 °C on average and the system to the environment registered temperatures of 7 °C, the final weights showed highly significant differences in T1= 365,96 g and T2= 330, 27 g. in the same way, there were highly significant differences in thesizes T1 = 30.20 cm and T2= 28.42 cm, while the best feed conversion presented the fattening system to the environment T2= 1.33 and T1= 1.63 the calculated B/C ratio presented values for T1= $ 1.32 and T2= $ 1.12, obtaining better utility in T1= $ 0.32. In conclusion, the physical factor as the temperature of the wáter directly influences the biological behavior of the trout, for this reason, it is advisable to encourages mall and médium fishfarmers in the area to implement the controlled environment system (greenhouse) as a breeding alternative where the harvest time is shortened and the water resource is used.