Total replacement of fishmeal with poultry by-product meal affected the growth, muscle quality, histological structure, antioxidant capacity and immune response of juvenile barramundi, Lates calcarifer.
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It can be concluded that a total substitution of FM protein by methionine supplemented PBM negatively influenced the growth performance, liver health, histological traits of different organs, immune and antioxidant response, and expression of stress-related genes in juvenile barramundi.Abstract:
The present study investigates if the total replacement of dietary fishmeal (FM) with poultry by-product meal (PBM), supplemented with methionine influences the muscle fatty acids composition, normal gut morphology, histological traits of the liver, muscle, and gill, liver enzymes, immune and antioxidant response, and stress-related gene in juvenile barramundi, Lates calcarifer in relation to growth and feed utilization. Barramundi (3.58±0.01g) were randomly distributed into six 300 L seawater recirculating tanks (25 fish/tank) and fed two formulated isonitrogenous and isolipidic diets for 6 weeks. The control diet had FM as the sole animal protein source, whereas other test diet had only PBM as an animal protein source. Dietary PBM affected the fish performance and feed utilization. Regarding muscle fatty acid profile, total saturated fatty acids and monounsaturated fatty acids elevated while total PUFA particularly n-3 LC-PUFA and EPA decreased in PBM fed fish than control diet fed fish. Liver, muscle, gill, and intestinal histology showed no obvious alteration in control diet fed fish, however, more lipid droplets and hepatic vacuolization in the liver, necrotic myotome in muscle, hyperplasia in secondary lamellae in gill and short and broken folds in the intestine were observed in PBM fed fish. Similar to light microscopy observation of intestinal morphology, the transmission electron microscopy (TEM) analysis revealed shorter and smaller microvilli in fish fed PBM. Histopathological alterations in the liver of PBM fed fish were further associated with the elevated levels of aspartate aminotransferase (AST) and glutamate dehydrogenase (GLDH) and the significant upregulation of stress-related genes, HSP70 and HSP90. Also, a negative influence on lysozyme activity, and antioxidant enzymatic activities were recorded in fish fed PBM. Overall, it can be concluded that a total substitution of FM protein by methionine supplemented PBM negatively influenced the growth performance, liver health, histological traits of different organs, immune and antioxidant response, and expression of stress-related genes in juvenile barramundi.read more
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Supplementation of tuna hydrolysate and insect larvae improves fishmeal replacement efficacy of poultry by-product in Lates calcarifer (Bloch, 1790) juveniles.
TL;DR: The effects of feeding different levels of poultry byproduct meal (PBM) replacing fishmeal (FM) protein, supplemented with tuna hydrolysate (TH) and Hermetia illucens (HI) larvae, on the growth, fillet quality, histological traits, immune status, oxidative biomarker levels and gut microbiota of juvenile barramundi, Lates calcarifer were investigated for six weeks as discussed by the authors.
Journal ArticleDOI
Alternative Proteins for Fish Diets: Implications beyond Growth
Cláudia Aragão,Ana Teresa Gonçalves,Benjamín Costas,Rita Azeredo,Maria J. Xavier,Sofia Engrola +5 more
TL;DR: The research results indicate that alternative protein sources, such as terrestrial plant proteins, rendered animal by-products, insect meals, micro- and macroalgae, and single cell proteins, may negatively impact gut microbiota and health, thus affecting immune and stress responses.
Journal ArticleDOI
Growth, hepatic health, mucosal barrier status and immunity of juvenile barramundi, Lates calcarifer fed poultry by-product meal supplemented with full-fat or defatted Hermetia illucens larval meal
TL;DR: FHI larvae meal could be a good complementary protein source, particularly when replacing FM completely with insect-based proteins.
Journal ArticleDOI
Transformation of fish waste protein to Hermetia illucens protein improves the efficacy of poultry by-products in the culture of juvenile barramundi, Lates calcarifer
TL;DR: A 56-day trial of feeding barramundi, Lates calcarifer on four iso-nitrogenous and iso-lipidic diets where the control (0PBM-0HI) was a FM-based diet and the other test diets replaced FM protein with mixtures of a poultry byproduct meal (PBM) and a full-fat Hermetia illucens (HI) larvae meal reared on fish waste as discussed by the authors.
Journal ArticleDOI
Growth and Welfare of Rainbow Trout (Oncorhynchus mykiss) in Response to Graded Levels of Insect and Poultry By-Product Meals in Fishmeal-Free Diets
Gloriana Cardinaletti,Patrizia Di Marco,Enrico Daniso,Maria Messina,V. Donadelli,Maria Grazia Finoia,T. Petochi,Francesca Fava,Filippo Faccenda,Michela Contò,Roberto Cerri,Donatella Volpatti,Chiara Bulfon,Alberta Mandich,A. Longobardi,Giovanna Marino,Lina Fernanda Pulido-Rodríguez,Giuliana Parisi,Emilio Tibaldi +18 more
TL;DR: In this paper , the effects of poultry byproduct meal (PBM) and insect meal from black soldier fly (BSFM) in fishmeal-free diets on growth, whole-body composition, nutrient-energy mass balance and retention, digestive functions, stress, metabolic status, innate immunity, and liver health in rainbow trout (Oncorhynchus mykiss).
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