title: Effects of dietary fructo-oligosaccharide supplementation on the growth performance, haemato-immunological parameters, gut microbiota and stress resistance of common carp (Cyprinus carpio) fry.
abstract: The present study was conducted to investigate the effects of dietary fructo-oligosaccharide (FOS) (0, 1, 2 and 3%) supplementation on the growth performance, haemato-immunological parameters, cultivable autochthonous (non-adherent) intestinal microbiota and stress resistance of common carp (Cyprinus carpio) fry (3·23 (SEM 0·14) g). These parameters were measured after feeding the carp fry with the experimental diets for 7 weeks. Dietary FOS supplementation had no significant effects on the growth performance and food intake of carp fry compared with the control treatment. It also had no significant effects on the following haematological parameters: erythrocyte count; leucocyte counts (WBC); haematocrit; Hb; mean corpuscular volume; mean corpuscular Hb content; mean corpuscular Hb concentration. However, WBC and respiratory burst activity were significantly affected by dietary FOS supplementation. Evaluation of the cultivable autochthonous intestinal microbiota revealed a significant increase in the levels of total viable heterotrophic aerobic bacteria and lactic acid bacteria in fish fed diets supplemented with 2 and 3% FOS. Furthermore, dietary FOS supplementation significantly increased the survival rate and stress resistance of carp fry compared with the control treatment. These results encourage conducting further research on the administration of FOS and other prebiotics in carp fry studies.
authors.affiliation: Department of Fisheries,Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources,Gorgan,Iran.
authors.forename: Seyed Hossein
authors.initials: SH
authors.lastname: Hoseinifar
authors.affiliation: Department of Aquatic Animal Health,Faculty of Veterinary Medicine, University of Tehran,Tehran,Iran.
authors.forename: Narges
authors.initials: N
authors.lastname: Soleimani
authors.affiliation: Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway,NO-9037 Breivika,Norway.
authors.forename: Einar
authors.initials: E
authors.lastname: Ringø
mesh_terms: D000818:Animals; D017756:Aquaculture; D001422:Bacterial Adhesion; D002347:Carps / Q000254:growth & development* / Q000276:immunology / Q000382:microbiology; D004032:Diet / Q000662:veterinary*; D060467:Disease Resistance; D002149:Energy Intake; D005393:Fish Diseases / Q000097:blood / Q000209:etiology / Q000276:immunology / Q000517:prevention & control*; D005632:Fructose / Q000032:analysis; D006088:Gram-Negative Aerobic Bacteria / Q000254:growth & development / Q000276:immunology / Q000302:isolation & purification; D007113:Immunity, Innate; D007422:Intestines / Q000382:microbiology*; D007492:Iran; D056546:Lactobacillales / Q000254:growth & development / Q000276:immunology / Q000302:isolation & purification; D007962:Leukocytes / Q000276:immunology; D050296:Microbial Viability; D009844:Oligosaccharides / Q000008:administration & dosage / Q000737:chemistry / Q000627:therapeutic use*; D056692:Prebiotics; D013312:Stress, Physiological; D016019:Survival Analysis; D015430:Weight Gain
chemical_list: D009844:Oligosaccharides; D056692:Prebiotics; D005632:Fructose