The objective of this experiment was to test the effects of supplementation of defatted black soldier fly (Hermetia illucens) larvae (BSFL) meal in beagle dogs. A total of nine healthy female beagles (initial body weight 12.1 ± 1.76 kg) were fed grain-based diets with three levels of BSFL meal (0, 1% or 2%) in a 42-day feeding trial. At the end of week 6 of the experiment, all dogs were intraperitoneally challenged with Escherichia coli lipopolysaccharide (LPS) at 100 μg/kg of body weight. Albumin concentration was linearly increased with increasing BSFL meal level (P<0.05). A linear increase (P<0.05) in calcium concentration was observed when increasing dietary BSFL meal. Although dietary treatments did not affect the digestibility of ether extract, the digestibility of dry matter and crude protein were linearly increased with increasing the level of BSFL meal. The concentration of tumor necrosis factor-α was linearly decreased but glutathione peroxidase (GPx) concentration was linearly increased when increasing the level of BSFL meal at 6 h after challenge (P<0.05). In addition, there were quadratic increases in concentrations of GPx and superoxide dismutase with increasing dietary BSFL meal level at 3 h after challenge (P<0.05). These findings from the present study demonstrate that BSFL meal can be supplemented in the diet to convert beneficial effects to beagle dogs, indicated as improved digestibility of dry matter and crude protein and anti-inflammatory and anti-oxidative capacity.
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