A four months growth trial was carried out in order to evaluate the quality traits of juvenile shi drum (Umbrina cirrosa) fed two isonitrogenous and isoenergetic diets having a different EE/NFE ratio (LOW, 0.7 vs. HIGH, 1.1). Compared to HIGH diet, LOW one was formulated increasing the replacement of fish oil with cereal products and soybean meal. At the end of the feeding trial (2 replicate per dietary treatment), 26 fish for each thesis were sorted according to live weight and submitted to chemical and sensorial analysis. Dietary treatments showed similar productive performance. The relative high inclusion of carbohydrates in substitution of lipids did not affect proximate composition of whole body and dorsal fillet. Among sensorial traits, LOW diet-fed fish evidenced a significant lower trunk exudation and fillet lightness. Results of this research showed that shi drum is a suitable candidate for Mediterranean marine aquaculture and its dietary formulation might include at least the NFE amount tested in this trial.
Effect of dietary EE/NFE ratio on sensorial traits of shi drum
SEGATO, SEVERINO;FASOLATO, LUCA;BALZAN, STEFANIA;ELIA, CARLA;NOVELLI, ENRICO;ANDRIGHETTO, IGINO
2008
Abstract
A four months growth trial was carried out in order to evaluate the quality traits of juvenile shi drum (Umbrina cirrosa) fed two isonitrogenous and isoenergetic diets having a different EE/NFE ratio (LOW, 0.7 vs. HIGH, 1.1). Compared to HIGH diet, LOW one was formulated increasing the replacement of fish oil with cereal products and soybean meal. At the end of the feeding trial (2 replicate per dietary treatment), 26 fish for each thesis were sorted according to live weight and submitted to chemical and sensorial analysis. Dietary treatments showed similar productive performance. The relative high inclusion of carbohydrates in substitution of lipids did not affect proximate composition of whole body and dorsal fillet. Among sensorial traits, LOW diet-fed fish evidenced a significant lower trunk exudation and fillet lightness. Results of this research showed that shi drum is a suitable candidate for Mediterranean marine aquaculture and its dietary formulation might include at least the NFE amount tested in this trial.Pubblicazioni consigliate
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