Evaluation of the suitability of a partially defatted black soldier fly (Hermetia illucens L.) larvae meal as ingredient for rainbow trout (Oncorhynchus mykiss Walbaum) diets

Table 6 Condition factor, somatic indexes and fillet physical quality parameters of rainbow trout fed the experimental diets (n = 20)

Items	HI0	HI25	HI50	SEM	P-value
K	1.18	1.23	1.21	0.011	0.198
CY	88.88	88.87	88.94	0.110	0.968
HSI	1.63	1.73	1.71	0.021	0.158
VSI	8.94	9.25	9.21	0.141	0.632
CF	1.57	1.41	1.39	0.066	0.472
Quality parameters
pH₂₄	6.36	6.38	6.41	0.016	0.557
L*	45.06	46.38	47.98	0.618	0.157
a*	0.24	−0.25	−0.29	0.187	0.434
b*	6.34	6.68	6.67	0.145	0.575
Hue	−0.48	−0.09	−0.41	0.179	0.644
Chroma	6.50	6.86	6.77	0.153	0.608

Abbreviations: HI Hermetia illucens, SEM standard error of the mean, P probability, K condition factor, CY carcass yield, HSI hepatosomatic index, VSI viscerosomatic index, CF coefficient of fatness, pH ₂₄ fillet muscle pH at 24 h post mortem, L* lightness, a* redness, b* yellowness

ISSN: 2049-1891