title: Dietary sodium propionate improved performance, mucosal and humoral immune responses in Caspian white fish (Rutilus frisii kutum) fry.
abstract: The present study investigates the efficiency of graded levels (0, 0.25, 0.5, 1 and 2%) of sodium propionate (SP) on Caspian white fish (Rutilus frisii kutum) fry growth performance, skin mucus immune response as well as humoral immune parameters. Fish were divided into 5 groups repeated in triplicates and each group were fed on experimental diets for 7 weeks. Growth performance parameters, skin mucus total immunoglobulin (Ig) level, lysozyme, protease and alkaline phosphatase (ALP) activity as well as the non-specific humoral immune response (total Ig, lysozyme, alternative haemolytic complement activity (ACH50) were determined at the end of feeding trial. The results showed that supplementation of diet with 0.25% SP significantly improved growth performance compared control group (P < 0.05). Evaluation of skin mucus immune parameters revealed significant elevation in fish fed SP supplemented diet (P < 0.05). Variation in the levels of responses was evident among different SP level and more pronounced in 0.25% and 0.5% treatments. Regarding non-specific humoral response, remarkably increased lysozyme and ACH50 activities were observed in 0.25% and 0.5% groups compared other treatments (P < 0.05); highest level in 0.25% SP fed fish. No significant change was noticed for serum total Ig compared control group (P > 0.05), except 0.25% SP treatment which was significantly higher than those in other groups (P < 0.05). These results revealed that inclusion of administration of 0.25% and 0.5% SP in early stage of the Caspian white fish culture could improve mucosal and non-specific immune responses as well as performance.
authors.affiliation: Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. Electronic address: hoseinifar@gau.ac.ir.
authors.forename: Seyed Hossein
authors.initials: SH
authors.lastname: Hoseinifar
authors.affiliation: Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
authors.forename: Fazel
authors.initials: F
authors.lastname: Zoheiri
authors.affiliation: School of Applied Science, Temasek Polytechnic, 529757, Singapore.
authors.forename: Christopher Marlowe
authors.initials: CM
authors.lastname: Caipang
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D003530:Cyprinidae / Q000254:growth & development* / Q000276:immunology*; D004032:Diet / Q000662:veterinary*; D019587:Dietary Supplements / Q000032:analysis; D004305:Dose-Response Relationship, Drug; D056724:Immunity, Humoral; D018928:Immunity, Mucosal; D011422:Propionates; D012867:Skin / Q000276:immunology
chemical_list: D011422:Propionates; C514135:sodium propionate
keywords: Caspian white fish (Rutilus frisii kutum); Mucosal immune response; Non-specific immunity; Sodium propionate