Dietary galactooligosaccharide elicits positive effects on non-specific immune parameters and growth performance in Caspian white fish (Rutilus frisii kutum) fry. (September 2016)

• Record Type: Journal Article
• Authors: Hoseinifar, Seyed Hossein; Zoheiri, Fazel; Dadar, Maryam; Rufchaei, Rudabeh; Ringø, Einar
• Is Part Of: Fish & shellfish immunology. Volume 56(2016:Sep.)
• Page Start: 467
• Page End: 472
• Publication Date: 2016-09
• Subjects: Galactooligosaccharide -- Prebiotics -- Caspian white fish (Rutilus frisii kutum) -- Mucosal immunity -- Non-specific immune parameters -- Growth performance; Fishes -- Immunology -- Periodicals; Shellfish -- Immunology -- Periodicals; Poissons -- Immunologie -- Périodiques; Crustacés -- Immunologie -- Périodiques; 571.9617
• DOI: 10.1016/j.fsi.2016.08.001
• Languages: English
• ISSNs: 1050-4648

Abstract

Abstract: An eight-weeks feeding trial was conducted to investigate the effects of galactooligosaccharide (GOS), on the skin and serum non-specific immune parameters and growth performance of Caspian white fish ( Rutilus frisii kutum ) fry. Fish (2.07 ± 0.08 g) were fed different levels of GOS (0%, 1%, 2% and 3%). No significant ( P > 0.05) difference was observed in mucus protease activity, but inclusion of 1% GOS significantly ( P < 0.05) elevated total immunoglobulin (Ig) level and lysozyme activity. Evaluation of serum non-specific immune parameters revealed significant ( P < 0.05) increase in serum total Ig and lysozyme activity of fish fed 1% or 2% GOS compared those of fish fed control diet. Furthermore, the serum alternative haemolytic complement activity (ACH50) was significantly ( P < 0.05) elevated in all prebiotic groups regardless of inclusion levels. Administration of GOS in diet significantly ( P < 0.05) improved growth performance and feed utilisation. The results of the present study revealed that GOS administration is beneficial by improving immune response and growth performance of Caspian white fish. Graphical abstract: Highlights: Dietary galactooligosaccharide (GOS) improved skin mucus immune parameters. Fish fed GOS supplemented diets showed elevated serum non-specific immune parameters. Feeding on GOS supplemented diets increased growth performance of white fish fry.