Atractabilidad de piensos comerciales para litopenaeus vannamei disponibles en el sur del Ecuador.

Abstract

This study aimed to evaluate the attractability of three commercial shrimp feeds (labeled A, B, and C) available in southern Ecuador, specifically formulated for Litopenaeus vannamei, under controlled laboratory conditions. A binary choice test design was implemented to assess behavioral parameters such as detection time, approach frequency, and the number of shrimp engaging with each diet. Given that the data did not meet the assumptions of normality and homogeneity, non-parametric statistical tests (Kruskal-Wallis and Dunn's post hoc tests) were employed. The results demonstrated statistically significant differences (p < 0.05) in the shrimp's behavioral responses across the evaluated diets. Diet A showed the shortest average detection time (7.8 ± 2.86 s) and the highest cumulative number of approaches (191). In contrast, diets B and C exhibited longer detection times (31.0 and 29.4 s, respectively) and lower approach frequencies, suggesting a reduced release of chemoattractant compounds. These findings underscore the importance of incorporating attractability as a key parameter when designing and selecting commercial feeds for L. vannamei. A feed’s ability to stimulate feeding behavior directly impacts feed efficiency, reduces nutrient waste, and enhances environmental sustainability. The study highlights the value of functional ingredients such as protein hydrolysates and marine extracts and recommends the implementation of attractability assessments as part of quality control protocols in shrimp feed manufacturing. This research contributes to a deeper understanding of shrimp feeding behavior and supports the advancement of sustainable and economically viable aquaculture practices.