Increasing levels of fishmeal replacement by defatted black soldier fly larvae meal reduced growth performance without affecting fillet quality in largemouth bass (Micropterus salmoides).

Autor: Wang P; College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China., Yan X; College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China., Zhang X; College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China., Zhu Z; College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China., Xu Q; College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China., Hou J; Henan Subcritical Machinery Equipment Co., Ltd, Anyang, 455000, Henan, China., Chen J; College of Information Engineering, Northwest A&F University, Yangling, 712100, China., Gisbert E; College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China.; Institut de Recerca i Tecnologies Agroalimentaries (IRTA) Aquaculture Program, Centre de Sant Carles de La Rapita, Sant Carles de La Ràpita, Crta. de Poble Nou Km 5.5, P.O. Box 200, 43540, Tarragona, Spain., Zhou J; College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China. zhoujishu@163.com.
Jazyk: angličtina
Zdroj: Fish physiology and biochemistry [Fish Physiol Biochem] 2024 Dec; Vol. 50 (6), pp. 2255-2274. Date of Electronic Publication: 2024 Jul 31.
DOI: 10.1007/s10695-024-01390-x
Abstrakt: A 90-day feeding trial was conducted to evaluate the effects of replacing dietary fishmeal (FM) with defatted black soldier fly larvae meal (BSFL) on the growth performance and fillet quality of largemouth bass (Micropterus salmoides). The largemouth bass was divided into six groups (BSFL0, BSFL15, BSFL30, BSFL45, BSFL75, and BSFL100) and fed six isonitrogenous(CP 50%, 508 g/kg) and isolipid (CL 9%, 124 g/kg) diets, in which 0, 15%, 30%, 45%, 75%, and 100% of the fishmeal was replaced with BSFL, respectively. The results showed that the final body weight (FBW) and specific growth rate (SGR) of the largemouth bass decreased with increasing BSFL content, and they were significantly lower in BSFL75 than in BSFL0. The weight gain rate (WGR) decreased with increasing BSFL content and the feed conversion ratio (FCR) of largemouth bass increased with increasing BSFL content. The saturated fatty acids (SFAs) and n-3 polyunsaturated fatty acids (PUFA) contents of the largemouth bass fillet significantly decreased, and the n-6 PUFA content of the largemouth bass fillets significantly increased with increasing dietary BSFL. The fillet b* significantly decreased with increasing BSFL content. The biological parameters, fillet proximate nutrient composition, fillet amino acid composition, skin color, and fillet texture of the largemouth bass were not affected by the replacement of BSFL. Transcriptomic analysis revealed that BSFL replacement of FM affects the immune system and metabolic processes of largemouth bass through signaling pathways such as complement and coagulation cascades, the PPAR signaling pathway, cholesterol metabolism, and fat digestion and absorption. In conclusion, a replacement level lower than 45% BSFL was suggested for the overall growth and fillet quality of largemouth bass.
Competing Interests: Declarations Competing interests The authors declare that they have no competing interests. Ethics approval All experimental procedures conducted in this study were performed in accordance with the guidelines and regulations set by the Northwest A&F University of Animal Experimentation Ethics Committee, Yangling, China (No. DK2022007). This study followed the guidelines provided by the National Council for Control of Animal Experimentation (CONCEA) for the care and use of laboratory animals.
(© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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