scholarly journals Effects of waste stream combinations from brewing industry on performance of Black Soldier Fly, Hermetia illucens (Diptera: Stratiomyidae)

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5885 ◽  
Author(s):  
Shaphan Y. Chia ◽  
Chrysantus M. Tanga ◽  
Isaac M. Osuga ◽  
Samira A. Mohamed ◽  
Fathiya M. Khamis ◽  
...  

Background In recent years, there has been a rapidly growing demand for readily accessible substrates for mass production of Black Soldier Fly, Hermetia illucens Linnaeus. Beer production results in various by-products that typically end up in uncontrolled dumpsites constituting pollution problems, which merits urgent attention. The present study investigated whether the 12 formulated diets composed of brewers’ spent grains (BSGs), brewers’ yeast and cane molasses can serve as substrate for H. illucens production. Methods Four different BSGs were selected and formulated into 12 diets, aiming at varying protein and net energy levels. The diets were offered to newly hatched (∼1 h old) H. illucens larvae and the influence on developmental duration, survival, wet weight, pre-oviposition time, fecundity, and longevity were compared. Results Developmental duration of the larvae (16–21 days) and pre-pupae (8–11 days) differed significantly across the different diets. The developmental duration of the pupae (8.7–9.1 days) was not affected by diet. The larval (86–99.2%), pre-pupal (71–95%), and pupal (65–91%) survival rates varied significantly between flies reared on the different diets. The pre-oviposition time was similar for flies provided with water (7–11 days) and 10% sugar solution (8–14 days) or across the different diets. The mean fecundity per female ranged from 324–787 eggs and did not differ between females provided with water or sugar solution. However, the number of eggs laid per female varied significantly across the different diets when provided with water. The longevity of starved H. illucens adults was significantly lower (5 days) compared to those provided with water (11–14 days) or sugar solution (14–15 days). Discussion The implications of these findings as part of a quality control procedure for commercial production of high-quality H. illucens larvae as an alternative protein ingredient in livestock and aquaculture feed are discussed.

2021 ◽  
pp. 1-10
Author(s):  
T.H. Li ◽  
C.R. Zhang ◽  
P.F. Che ◽  
Y. Ma ◽  
L.S. Zang

Spent mushroom substrate (SMS) is the organic material remaining after harvesting mushrooms. We evaluated the potential of using SMSs of four different edible fungi (Auricularia heimuer, Lentinus edodes, Pleurotus eryngii and Pleurotus citrinopileatus) as a food resource for rearing black soldier fly (Hermetia illucens) larvae (BSFL) and to decrease waste recycling and save conventional feed. The larval weight after being fed only on the SMS of L. edodes (68.8 mg), a mushroom with worldwide cultivation, was heavier than larvae fed entirely on P. eryngii SMS (38.3 mg). The L. edodes SMS was selected from the various SMS treatments and subsequently mixed with food waste in different percentages to make BSFL rearing medium. When L. edodes SMS replaced 0, 10, 20, 30, 40, 50, 60, 70, 80 or 90% of the food waste in the mixed feed treatments, the BSFL survival rates (99.2-100%) did not differ among the treatments. Body size or weight was reduced only when 90% of the food waste was replaced by L. edodes SMS. A higher percentage of BSFL, however, developed into prepupae (55.8, 46.7, 75.8%, respectively) when 20, 30 or 90% of the food waste were replaced by L. edodes SMS. Compared to BSFL fed entirely on food waste, larvae fed a mixed diet consisting of 30% L. edodes SMS and 70% food waste had a lower fat content (178.1 g/kg) and a higher content of crude ash (15.54%), crude fibre (17.81%), crude protein (38.13%), and moisture (10.08%). Although the aerobic plate count (9,200 cfu/g), total mould count (260 cfu/g), and the arsenic (0.1830 mg/kg) and lead (0.202 mg/kg) contents increased in larvae reared on the mixed diet, all were below the safety limit. Collectively, these results suggest that mixed diets consisting of 20-30% L. edodes SMS and 70-80% food waste have a great potential as a daily medium for culturing this important resource insect.


Author(s):  
Arif Rahman Hakim ◽  
Agus Prasetya ◽  
Himawan T. B. M. Petrus

Seiring dengan berkembangnya industri tuna, limbah pengolahan yang dihasilkan semakin meningkat. Namun demikian pemanfaatan limbah tersebut belum optimal. Biokonversi bahan organik limbah tuna menjadi biomassa larva sebagai bahan pakan diharapkan mampu mengatasi permasalahan tersebut. Biokonversi menggunakan larva Hermetia illucens atau Black Soldier Fly (BSF) memiliki keunggulan dibandingkan proses konversi lain; di antaranya larva BSF mampu mengkonversi berbagai macam bahan organik, memiliki kandungan nutrisi tinggi serta bukan vektor penyakit. Tujuan penelitian ini ialah mempelajari laju umpan larva BSF dalam mengkonversi limbah tuna menjadi biomassa larva. Limbah tuna yang digunakan sebagai umpan larva BSF adalah kepala dan jeroan. Larva dipelihara selama 19 hari dengan pemberian umpan bervariasi (60, 80, 100 mg/larva/hari). Analisa dilakukan terhadap konsumsi umpan, indeks pengurangan limbah (waste reduction index/WRI), efisiensi konversi umpan tercerna (efficiency of conversion of digested-feed/ECD), tingkat kelulusan hidup (survival rates /SR), bobot larva, kandungan protein dan lemak larva. Hasil penelitian menunjukkan kepala dan jeroan tuna dapat digunakan sebagai pakan BSF, dengan nilai SR 41,33 – 98,33%. Laju umpan yang menghasilkan proses biokonversi paling optimum adalah umpan berupa kepala tuna sebesar 60 mg/larva/hari (K60). Nilai parameter pada perlakuan K60 adalah konsumsi umpan 77,09 %, WRI 4,06 % per hari, ECD 8,32 %, bobot larva 72,59 mg dan SR 98,33 %. Limbah berupa kepala tuna menghasilkan konsumsi umpan, WRI, ECD, bobot larva dan SR yang lebih tinggi dibandingkan limbah jeroan tuna. Penggunaan limbah kepala tuna dapat dimanfaatkan untuk mereduksi limbah sekaligus menghasilkan bahan pakan yang potensial. Kandungan larva BSF dengan umpan kepala tuna 60 mg/larva/hari meliputi protein 25,38 %, lemak 6,85 % dan air 62,81 %.


2019 ◽  
Vol 18 (5) ◽  
pp. 33-42
Author(s):  
Tu P. C. Nguyen

This study was conducted to evaluate the replacement of fishmeal by black soldier fly larvae (Hermetia illucens) (BSF) meal, frozen beef heart, and commercial pellet on growth performance, survival rate, and feed utilization of discus fish (Symphysodon sp.). Discus juveniles were graded into small, medium and large size groups as block in a completely randomized block design. Five trial diets included frozen beef heart (T1), commercial feed for discus fish (T2) and three diets containing graded levels of BSF as replacements for protein from fishmeal of 0% (T3), 25% (T4), and 50% (T5). The results showed that TAN and nitrite levels in the beef heart treatment were higher than those in the other ones. Moreover, discus fish in treatment 1 had a higher growth rate and a lower feed conversion ratio than those in the other treatments. On the other hand, no statistically significant differences among the pellet treatments were observed for growth rates of discus's weight, length and height and feed conversion ratio (P > 0.05). Moreover, the results showed that discus fish in the two BSF treatments did not suffer from diseases and had higher survival rates than those in the other treatments.


Author(s):  
M.C. Reguzzi ◽  
F. Cominelli ◽  
M. Bardone ◽  
R. Nicoli Aldini ◽  
O. Chiesa ◽  
...  

Livestock farms represent a source of attraction for other species, which find food resources on the animals themselves, in the food supplied to them, in their manure, etc. Insect farms too can suffer infestation by different organisms living on substrates or behaving as parasites and/or predators. Breeding of the black soldier fly (BSF), Hermetia illucens (L.) requires organic materials which are attractive for other arthropods (commensals, mycetophages, scavengers, etc.). During recent years, the breeding system adopted at the Di.Pro.Ve.S. of the Università Cattolica del Sacro Cuore, Piacenza (Italy), has suffered the presence of the following ‘pests’: Megaselia scalaris (Loew) (Diptera Phoridae), Muscina stabulans (Fallén) (Diptera Muscidae), Monomorium pharaonis (L.) (Hymenoptera Formicidae) and Caloglyphus berlesei (Michael) (Astigmata Acaridae). The use of fermented fruit, vegetables or of an artificial diet to induce egg laying proved to be attractive for small flies such as M. scalaris. This species also takes advantage of the aqueous sugar solution used to feed BSF adults. Infestations by M. scalaris are worrying because its larvae can compete efficiently with those of the BSF in substrate colonisation. Likewise, M. stabulans can be attracted by the substrates, even though this species has not shown the same levels of high competitiveness as the previously mentioned species. M. pharaonis was observed to prey on eggs and newborn BSF larvae. Lastly, infestations by the mite C. berlesei were detected when conditions for the larval development of the BSF were not optimal. This species could also be harmful for the workers involved in the breeding. The establishment of insect and mite populations inside BSF rearing boxes suggests that a careful analysis should be made based on the location of the breeding facility and a series of measures should of course be adopted when this kind of structure and activities are designed and realised.


2018 ◽  
Vol 2 (3) ◽  
pp. 84-87 ◽  
Author(s):  
A.S. Khayrova ◽  
◽  
S.A. Lopatin ◽  
O.A. Sinitsyna ◽  
A.P. Sinitsyn ◽  
...  

2021 ◽  
Vol 13 (15) ◽  
pp. 8345
Author(s):  
Kieran Magee ◽  
Joe Halstead ◽  
Richard Small ◽  
Iain Young

One third of food produced globally is wasted. Disposal of this waste is costly and is an example of poor resource management in the face of elevated environmental concerns and increasing food demand. Providing this waste as feedstock for black soldier fly (Hermetia illucens) larvae (BSFL) has the potential for bio-conversion and valorisation by production of useful feed materials and fertilisers. We raised BSFL under optimal conditions (28 °C and 70% relative humidity) on seven UK pre-consumer food waste-stream materials: fish trimmings, sugar-beet pulp, bakery waste, fruit and vegetable waste, cheese waste, fish feed waste and brewer’s grains and yeast. The nutritional quality of the resulting BSFL meals and frass fertiliser were then analysed. In all cases, the volume of waste was reduced (37–79%) and meals containing high quality protein and lipid sources (44.1 ± 4.57% and 35.4 ± 4.12%, respectively) and frass with an NPK of 4.9-2.6-1.7 were produced. This shows the potential value of BSFL as a bio-convertor for the effective management of food waste.


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