Different Combinations of Butchery and Vegetable Wastes on Growth Performance, Chemical-Nutritional Characteristics and Oxidative Status of Black Soldier Fly Growing Larvae

Abstract

Hermetia illucens larvae (five days old) were farmed on broiler feed (control diet), a vegetable diet (V100), a 50% of vegetable diet + 50% of butchery wastes (V50 + B50), and a 75% of vegetable diet + 25% of butchery wastes (V75 + B25) to evaluate their suitability. Ten kilograms of substrate and 6000 larvae composed each replicate (nine per group). Larvae were weighed and measured every two days until the 25% developed into prepupae. Larval mortality and growing indexes were calculated. Substrates, larvae, and frass chemical composition were analyzed. Larvae oxidative status and stability were measured in hemolymph and body. The V100 larvae showed the lowest live weight, length, thickness, and growth rate but had low mortality rate and high substrate reduction index and protein conversion ratio. The V100 larvae had similar protein to and lower lipids than the control ones, while the V50 + B50 and V75 + B25 larvae contained higher lipids and lower protein than the others. Despite the vegetable wastes, at different levels, the reactive oxygen species content decreased in hemolymph, and the V100 diet depressed growth performance and should be avoided. The use of butchery wastes combined with vegetable ingredients can be a suitable alternative to balance the high level of lipid and the low content of protein.

Cultivation of Black Soldier Fly (Hermetia illucens) Larvae for the Valorization of Spent Coffee Ground: A Systematic Review and Bibliometric Study

“…BSF has emerged as a significant player in the domain of waste management and for producing high-quality animal feed [38][39][40]. By modifying the nutritional inputs [41][42][43][44] of the BSF, researchers can control the quality and yield of its larvae, which serve as protein sources. One promising nutritional input is spent coffee grounds (SCG) [45][46][47][48][49].…”

Bioconversion of Different Waste Streams of Animal and Vegetal Origin and Manure by Black Soldier Fly Larvae Hermetia illucens L. (Diptera: Stratiomyidae)

“…It has a short life cycle and its larvae are characterized by a low feed conversion ratio [ 4 , 11 ]. BSFL are able to convert and recover nutrients from a vast variety of materials such as wastes from abattoirs [ 13 ], food [ 14 ], fruits and vegetables [ 15 , 16 ], and the feces of humans and livestock manure [ 17 ] into valuable protein-rich and fat-rich larval biomass [ 11 , 12 , 18 ]. Furthermore, the nutritional profile of BSFL is comparable to several oilseeds including hempseed [ 19 ], flaxseed [ 20 ] and rapeseed [ 20 ] with up to 28% of protein and 40% of oil content [ 21 ].…”

Fish and Black Soldier Fly Meals as Partial Replacements for Soybean Meal Can Affect Sustainability of Productive Performance, Blood Constituents, Gut Microbiota, and Nutrient Excretion of Broiler Chickens

“…The black soldier fly (BSF, Hermetia illucens, L., Diptera: Stratiomyidae) is the insect species with the greatest potential for industrial production. Black soldier fly larvae (BSFL) achieve a high growth rate and an excellent conversion of organic waste to complete their development [19], with a consistent amino acid concentration in their bodies when raised on distinct substrates [7,20,21]. It is generally recognized that using insects, especially BSFs, plays a crucial role in resolving problems relating to large amounts of organic waste dispersed around the Earth [4].…”