Insect larvae meal as an alternative source of nutrients in the diet of Atlantic salmon (Salmo salar) postsmolt

Abstract

Two insect meal (IM) products were tested as ingredient in diets for Atlantic salmon weighing~250 g. The modern control diet contained 200 g kg À1 fish meal (FM100), which was stepwise replaced by insect meal A (IM A) as a 25% (A25), 50% (A50) or 100% (A100) FM replacement or insect meal B (IM B) as a 25% (B25) or 100% (B100) FM replacement. Selected nutrient parameters and contaminants were measured in the diets. After 15 weeks, fish length and weight were recorded and visceral and hepatic indices calculated. Fatty acid and amino acid digestibility was calculated. Morphology of the liver, kidney, mid-and hind intestine was evaluated. Finally, a sensory testing of the fillets was conducted. A25, A50 and A100 performed equally well as the FM100 diet. The feed intake decreased moderately with increasing IM A inclusion; however, food conversion ratio decreased, resulting in an equal net growth of the fish. Histology did not show any differences between any of the dietary groups, and sensory testing of fillets from FM100, A100 and B25 did not reveal any significant differences in odour, flavour/taste or texture between groups. IM A was suitable to replace up to 100% of dietary FM, whilst IM B did not perform equally well.

Efficacy of insect larval meal to replace fish meal in juvenile barramundi, Lates calcarifer reared in freshwater

“…However, the price of soybean Values are average from duplicate groups of samples a Diets represent; control (without black soldier fly larval meal inclusion), BSFL25 (25%), BSFL50 (50%), BSFL75 (75%) and BSFL100 (100% fish meal replacement using black soldier fly larval meal) meal and other plant feedstuff has also increased dramatically due to their growing demand for the direct human consumption (FAO 2009). Therefore, attention could be directed towards the locally available and cheaper protein source, which may create flexibility in diet formulations and insect meal has been identified as one such ingredient (Rumpold and Schlüter 2013;Van der Spiegel et al 2013;Van Huis 2013;Lock et al 2015). Black soldier fly was early been recognized as the potential candidate ingredient due to its rich nutritional profile comprised of 40% protein and 35% lipid (Bondari and Sheppard 1987).…”

“…In last few years, a considerable number of researches have shed the light on the efficacy of dietary insect meal in several aquaculture species including tilapia, Oreochromis niloticus, salmon, Salmo salar, African catfish, Clarias gariepinus, turbot, Psetta maxima, and rainbow trout, Oncorhynchus mykiss (Kroeckel et al 2012;Fasakin et al 2003;Lock et al 2015;St-Hilaire et al 2007a, b;Ogunji et al 2007Ogunji et al , 2008Rana et al 2015) feeds. Among a number of promising insect species, farming of black soldier fly, Hermetia illucens larvae/pre-pupae has received top priority for the commercial exploitation (Lock et al 2015).…”

“…Among a number of promising insect species, farming of black soldier fly, Hermetia illucens larvae/pre-pupae has received top priority for the commercial exploitation (Lock et al 2015). The overall nutrient content viz.…”

“…The overall nutrient content viz. crude protein, lipid and essential amino acid content of insect meal closely resemble with FM, and the pre-pupae meal have been demonstrated to be suitably alternative for FM (Kroeckel et al 2012;Lock et al 2015;Rana et al 2015) in several aquaculture species.…”

Effect of Tenebrio molitor larvae meal on growth performance, in vivo nutrients digestibility, somatic and marketable indexes of gilthead sea bream (Sparus aurata)

“…Insect larvae meals can represent a valuable alternative (Makkar et al, 2014;Sànchez-Muros et al, 2014;Henry et al, 2015;Lock et al, 2015).…”