Apparent Digestibility Coefficients of Black Soldier Fly (Hermetiaillucens), Yellow Mealworm (Tenebrio molitor), and Blue Bottle Fly (Calliphora vicina) Insects for Juvenile African Catfish Hybrids (Clarias gariepinus×Heterobranchus longifilis)

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dc.contributor.authorSándor, Zsuzsanna
dc.contributor.authorBanjac, Vojislav
dc.contributor.authorVidosavljević, Strahinja
dc.contributor.authorKáldy, Jenő
dc.contributor.authorEgessa, Robert
dc.contributor.authorLengyel-Kónya, Éva
dc.contributor.authorTömösközi-Farkas, Rita
dc.contributor.authorZalán, Zsolt
dc.contributor.authorAdányi, Nóra
dc.contributor.authorLibisch, Balázs
dc.contributor.authorBiró, Janka
dc.date.accessioned2023-07-14T09:56:15Z
dc.date.available2023-07-14T09:56:15Z
dc.date.issued2022-10-18
dc.description.abstractA digestibility trial was conducted with African catfish hybrid juveniles in order to determine the apparent digestibility coefficients (ADCs) of different nutrients. The experimental diets contained defatted black soldier fly (BSL), yellow mealworm (MW), or fully fat blue bottle fly (BBF) meals, in a 70 : 30 ratio between the control diet and the tested insect meals. The indirect method for the digestibility study was performed using 0.1% yttrium oxide as an inert marker. Fish juveniles of 217:4 ± 9:5 g initial weight were distributed in 1m3 tanks (75 fish/tank) of a recirculating aquaculture system (RAS), in triplicates, and fed until satiation for 18 days. The average final weight of the fish was 346 ± 35:8 g. The ADCs of the dry matter, protein, lipid, chitin, ash, phosphorus, amino acids, fatty acids, and gross energy for the test ingredients and diets were calculated. A six-month storage test was carried out to evaluate the shelf life of the experimental diets, while the peroxidation and microbiological status of the diets were also assessed. The ADC values of the test diets differed significantly (p < 0:001) compared to those of the control for most of the nutrients. Altogether, the BSL diet was significantly more digestible for protein, fat, ash, and phosphorus than the control diet but less digestible for essential amino acids. Significant differences were found between the ADCs of the different insect meals evaluated (p < 0:001) for practically all nutritional fractions analyzed. The African catfish hybrids were able to digest BSL and BBF more efficiently than MW, and the calculated ADC values agreed with those of other fish species. The lower ADCs of the tested MW meal correlated (p < 0:05) with the markedly higher acid detergent fiber (ADF) levels present in the MW meal and MW diet. Microbiological evaluation of the feeds revealed that mesophilic aerobic bacteria in the BSL feed were 2–3 orders of magnitude more abundant than those in the other diets and their numbers significantly increased during storage. Overall, BSL and BBF proved to be potential feed ingredients for African catfish juveniles and the shelf life of the produced diets with 30% inclusion of insect meal retained the required quality during a six-month period of storage.en_US
dc.description.sponsorshiphis work was supported by the European Regional and Development Fund and the Government of Hungary through the project TKP2020-NKA-24 and by the RRF-2.3.1-21-2022-00007 NKFIH project of the National Research, Development and Innovation Office (NRDI Office), Hungary.en_US
dc.identifier.citationZsuzsanna J. Sándor, Vojislav Banjac, Strahinja Vidosavljević, Jenő Káldy, Robert Egessa, Éva Lengyel-Kónya, Rita Tömösközi-Farkas, Zsolt Zalán, Nóra Adányi, Balázs Libisch, Janka Biró, "Apparent Digestibility Coefficients of Black Soldier Fly (Hermetia illucens), Yellow Mealworm (Tenebrio molitor), and Blue Bottle Fly (Calliphora vicina) Insects for Juvenile African Catfish Hybrids (Clarias gariepinus × Heterobranchus longifilis)", Aquaculture Nutrition, vol. 2022, Article ID 4717014, 16 pages, 2022. https://doi.org/10.1155/2022/4717014en_US
dc.identifier.otherhttps://doi.org/10.1155/2022/4717014
dc.identifier.scopus2-s2.0-85141199367
dc.identifier.urihttp://oa.fins.uns.ac.rs/handle/123456789/265
dc.identifier.wos000891024200001
dc.language.isoenen_US
dc.publisherWiley-Hindawien_US
dc.rightsopenAccess
dc.titleApparent Digestibility Coefficients of Black Soldier Fly (Hermetiaillucens), Yellow Mealworm (Tenebrio molitor), and Blue Bottle Fly (Calliphora vicina) Insects for Juvenile African Catfish Hybrids (Clarias gariepinus×Heterobranchus longifilis)en_US
dc.typeinfo:eu-repo/semantics/articleen_US

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