Evaluación de los sistemas de alimentación bajo el uso de tablas nutricionales y ad libitumen alevinos de trucha arcoíris (oncorhynchus mykiss) en la estación pesquemos, Mutiscua, Norte De Santander.

Abstract

The present investigation evaluated the feeding systems under the use of nutritional tables and Ad libitum in rainbow trout fry (Oncorhynchus mykiss) taking into account productive parameters, the economic conversion rate was also analyzed, to determine which of the feeding systems was more efficient. The experiment was carried out at the Pesquemos fish farming, in Mutiscua, Norte de Santander, Colombia. A completely randomized experimental design was used, with two (2) treatments (feeding systems) one Ad libitum and another with nutritional tables and three (3) repetitions. A total of 6 experimental units (three tanks per treatment), each tank with 1,377 trout fry, were used for a total of 4,130 fish per treatment. Rainbow trout fry (O. mykiss) had an initial average weight of 0.66 ± 0.1 grams, all obtained from the same spawning. Six (6) concrete tanks were used, each with dimensions of 4 meters long, 0.60 meters wide and 0.65 meters high, with a useful volume of 1,560 liters (1.13 liters / fish). It can be concluded that the feeding system through the use of biomass tables in rainbow trout fry (O. mykiss) improves the economic conversion rate, weight gain and decreases food conversion, without affecting survival rates, so much; It is the system that should be used more by the fish farming of trout.