Effects of dietary protein substitution of fishmeal with black soldier fly larval meal on growth and physiological responses of juvenile striped catfish, Pangasianodon hypophthalmus

Abstract

A 10-week feeding trial was conducted to determine the effects of dietary black soldier fly larval meal (BSFLM) on growth performances, digestive enzyme activity, haematological responses and muscle growth-related gene expression of juvenile striped catfish (Pangasianodon hypophthalmus). Six isonitrogenous and isolipidic diets were formulated with BSFLM to replace fishmeal at 0 per cent (T0), 20 per cent (T20), 40 per cent (T40), 60 per cent (T60), 80 per cent (T80) and 100 per cent (T100). A total of 540 fingerlings were randomly distributed into 18 tanks and fed thrice a day. Growth performance and feed utilization of fish fed T20, T40 and T60 diets were not significantly different from T0 diet. However, increasing the percentage of fishmeal replacement with BSFLM to 100% at an inclusion level of 292 g/kg resulted in a substantial reduction in growth and feed efficiency of striped catfish. Fish fed T80 and T100 diets had significantly lower whole-body crude protein, crude lipid, total cholesterol and triglyceride value than fish fed other experimental diets, while dietary inclusion of BSFLM had no significant effect on the whole-body amino acid profile, haematological responses and intestinal and liver protease and amylase activity of striped catfish. However, lipase activity was increased in fish fed T80 and T100 diets. T80 and T100 hepatocytes were shown to have greater congestion in histology than other groups. The relative expression of MyoD and myogenin was significantly maximized in fish fed the T60 diet. Fishmeal may be replaced with BSFLM up to 60 per cent at an inclusion level of 174 g/kg in the diet of juvenile striped catfish.

Mitigation of Heat Stress in Striped Catfish (Pangasianodon hypophthalmus) by Dietary Allicin: Exploring the Growth Performance, Stress Biomarkers, Antioxidative, and Immune Responses

“…Dietary allicin and heat stress were signifcant factors in the blood immunity and antioxidative responses of striped catfsh. However, no signifcant interaction efects were 3) with diferent letters in the same row show signifcant diferences (P < 0.05). Te asterisk symbol refers to signifcant diferences before and after heat stress.…”

“…Te malondialdehyde level (MDA) was reduced by dietary allicin, and fsh fed 2% had the lowest MDA level before heat stress. After heat stress, fsh fed 1, 2, and 4% of allicin had lower MDA than fsh fed 3) with diferent letters in the same row show signifcant diferences (P < 0.05). Te asterisk symbol refers to signifcant diferences before and after heat stress.…”

“…Te expansion of aquaculture activity to overcome the demand of an overly increasing population is facing several recent manipulations [1]. Striped catfsh is one of the potential candidates for warm water aquaculture and showed a high ability for farming under diverse environmental conditions [2,3]. However, abiotic and biotic stressors cause a severe reduction in biomass productivity and hence enormous economic loss [4,5].…”

The Effect of Dietary Protein Hydrolysate from Black Soldier Fly Larvae and Schizochytrium on Palatability, Nutrient Metabolites and Health Status in Beagle Dogs

“…A possible reason for this consequence is that protein hydrolysate from black soldier fly larvae (BSFP) is easier for animals’ intestines to absorb than crude protein due to a larger percentage of pure protein and free amino acids, as well as a high protein efficiency ratio [ 7 , 8 ]. Additionally, the substitution of fish meal with BSFL meal in the diet resulted in a lower TC and TG concentration in juvenile striped catfish [ 35 ], which could be responsible for the presence of chitin in BSFL, which plays an important role in triglyceride hydrolysis and in boosting lipid utilization [ 36 ]. The low-level dietary fishmeal supplemented with 0.3% and 0.6% schizochytrium also significantly reduced the content of TG and TC [ 37 ] and had the potential to increase the CA concentration in plasma [ 16 ].…”

Effects of the Replacement of Dietary Fish Meal with Defatted Yellow Mealworm (Tenebrio molitor) on Juvenile Large Yellow Croakers (Larimichthys crocea) Growth and Gut Health

“…In the present study, TM did not affect the intestinal trypsin activity of large yellow croakers, but 15% and 45% substitution levels increase the intestinal lipase activity. Research has been conducted to show that fatty acids in insect proteins are incompatible with the digestion of Pangasianodon hypophthalmus [ 54 ] and that fatty acids act as signaling molecules to regulate lipid metabolic pathways such as lipase [ 55 ], which may account for the elevated intestinal lipase activity in the TM high-substitution-level group. The above results indicate that TM has a promotive effect on the intestinal lipase enzymes of large yellow croakers.…”