Defatted Black Soldier Fly Meal in Diet for Grow-Out Gilthead Seabream (Sparus aurata L. 1758): Effects on Growth Performance, Gill Cortisol Level, Digestive Enzyme Activities, and Intestinal Histological Structure

Figure 2

Transverse section of the intestine of Sparus aurata fed with HI75 diet. (a) AI of the HI75 group: increase of thickness and edema of the submucosa with lymphocyte infiltrate. (b) AI of the HI75 group: many rodlet cells (arrows) in the areas with detachment of the epithelium from the lamina propria. (c) PI of the HI75 group: widening of the lamina propria. (d) PI of the HI75 group: excessive laxity of the connective and tissue crumbling. (e) PI of the HI75 group: detachment of the epithelium from the lamina propria. (f) AI of the HI75 group: almost all the villi are affected by the detachment for a large part of their length. (g) AI of the HI75 group: the mucosal epithelium is detached in the intestinal lumen. (h) PI of the HI75 group: a fusion between the apices of the two villi (H&E).

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