Effect of alkoxy glycerol on growth performance, immune response and disease resistance in Nile Tilapia (Oreochromis niloticus)

• Published in: Research in veterinary science Vol. 123; pp. 298 - 304
• Main Authors: Elumalai, Preetham, Prakash, Parvathy, Musthafa, Mohamed Saiyad, Faggio, Caterina
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.04.2019; Elsevier Limited
• Subjects: Alkoxy glycerol; Aquaculture; Bacterial infections; Body weight gain; Brain; Cancer; Commercial fishing; Conversion ratio; Diet; Dietary supplements; Disease; Disease resistance; Fatty acids; Feed conversion; Fish diets; Fish oils; Fishing; Glycerol; Growth performance; Growth rate; Immune response; Immune system; Immunity; Immunology; Infections; Lipid peroxidation; Lipids; Liver; Lysozyme; Nile tilapia; Oils & fats; Oreochromis niloticus; Parameters; Peroxidation; Phagocytosis; Respiratory burst; Saline solutions; Serum immunology; Shark liver oil; Sharks; Tilapia; Veterinary medicine; Weight gain measurement; India; Shark liver oil; Serum immunology; Alkoxy glycerol; Nile tilapia; Growth performance
• ISSN: 0034-5288; 1532-2661
• DOI: 10.1016/j.rvsc.2019.01.006

Fish oil and their compounds derived from the same have immense applications in the improvement of health, brain development, enhancing immunity etc. This study aimed at the supplementation of such a compound alkoxy glycerol derived from shark liver oil in fish diet and thereby analyzing growth as well as immune parameters of Oreochromis niloticus. 400 fishes were distributed into 11 glass tanks, and then fishes were weighed before starting the experiment. (Average weight was found to be 5.3 ± 0.10 g). Feed was prepared using alkoxy glycerol in the doses like 5, 10, 15 g kg−1 Fishes were fed with the prepared diet for 30 days and growth parameters like specific growth rate (SGR), weight gain (WG), final weight (FW), and feed conversion ratio (FCR) were measured. On the 30th day, fishes were challenged with 0.1 ml of normal saline solution containing 107 CFUml−1 of Aeromonas hydrophila and disease resistance was monitored. After 30 days of post challenge observation, immunological and lipid peroxidation assays like alternative complement (ACH50), phagocytosis (PI), respiratory burst activities (RB), and serum lysozyme (SL) were performed. •Alkoxy glycerol enhances the immunological effect in Oreochromis niloticus.•Alkoxy glycerol enriched diet improved the growth and survival rate in O. niloticus.•Alkoxy glycerol diet enhance innate antioxidant defense in O. niloticus.