Respuesta biológica de la trucha arcoiris frente a tres sistemas de alimentación (Balanceado, lombrices de tierra y mixto)

Abstract

A Biological response of rainbow trouts under tree feeding systems was evaluated, in Cotopaxi province, Latacunga canton using RCBD (randomized completely block design) a total of tree treatments: T0 (balanced food for trout), T1 earthworms plus guts of animal) and T3 (earthworms) with 4 repetitions. Having an average initial weight and size of 36, 35 gr. and 15, 39 cm. there were no significant differences between treatment, at the end of this research, the results showed that the best weights and size were T1 with 194,36 gr. and 27,50 cm. The best weight gain and food conversion in T2 with 158, 20 g. and 1, 28. There is also a similar condition of the trout between T0 and T2 with 1, 05, regarding the performance of the trout fillet, the best result was obtained in T0 with 62, 05 %, the lowest mortality in T1 with 1, 25%. For energy and protein intake was T0 to 1787, 49 Kcal / kg. DM (dry matter) and 19.91 %respectively. In the sensorial analysis for color, the best outcome was in T1 with 3, 35 but for aroma and flavor was T0 with 3, 15 and 3, 1 respectively, T2 reported the best indicator with benefit cost 1,25. This study recommends for feeding rainbow trout, a mixed died based on earthworm plus guts of animals, since applying this feeding system achieves sizes and weight similar to the ones fed with balanced food and get lower costs of production.