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Nano- As a Dietary Intervention in Nile Tilapia (): Effects on Resistance to Challenge Immune-antioxidant Responses, Digestive/absorptive Capacity, and Growth

Abstract

The present investigation proposed an innovative trial at the probable beneficial effects of nano- (NBA) dietary incorporation on the Nile tilapia (). The investigation included the impact on the growth, digestive functions, immune-antioxidant indices, and resistance to challenge. A total of 135 fish (35.14 ± 0.12 g) were equally allocated into three groups (45 fish/group; 15 fish/replicate) in triplicates for 70 days. The control, NBA2, and NBA4 groups were fed basal diets enriched with 0, 10, and 10 CFU/kg NBA, respectively. Following the feeding experiment, all experimental groups were injected with 0.1 mL (1.5 × 10) and the fish mortalities were observed for 14 days. The outcomes showed that dietary NBA (NBA4 followed by the NBA2 diet) augmented the growth variables (final body weight, total weight gain, and specific growth rate) and condition factor and declined the feed conversion ratio. The intestinal digestive enzyme (amylase and lipase) and growth hormone levels were increased and the serum glucose level was decreased by dietary NBA. Furthermore, NBA diets enhanced the immune (total protein, globulin, lysozyme, complement 3, myeloperoxidase, and phagocytic activity) and antioxidant (superoxide dismutase, catalase, and total antioxidant capacity) parameters. The intestinal histology revealed no pathological lesions with a significant improvement in the intestinal histomorpho-measures (villus height and width, villus surface area, lamina propria thickness, and tunica muscularis thickness) by NBA diets in a dose-dependent manner. In the fish intestine, the count was increased in the NBA groups (NBA4 group followed by NBA2 group) with no discernible difference in the total bacterial count. Fish resistance to the challenge was increased by increasing the survival % in the NBA4 group (91.70 %) followed by the NBA2 group (83.30 %) compared to the control group (70.80 %). Overall, dietary NBA (especially 10 CFU/kg diet) could be a promising feed supplement in the Nile tilapia diets for improving their growth, health, and resistance to bacterial challenges.

References
1.
Okocha R, Olatoye I, Adedeji O . Food safety impacts of antimicrobial use and their residues in aquaculture. Public Health Rev. 2018; 39:21. PMC: 6081861. DOI: 10.1186/s40985-018-0099-2. View

2.
Kuebutornye F, Wang Z, Lu Y, Abarike E, Sakyi M, Li Y . Effects of three host-associated Bacillus species on mucosal immunity and gut health of Nile tilapia, Oreochromis niloticus and its resistance against Aeromonas hydrophila infection. Fish Shellfish Immunol. 2019; 97:83-95. DOI: 10.1016/j.fsi.2019.12.046. View

3.
Cai G, Wu D, Li X, Lu J . Levan from Bacillus amyloliquefaciens JN4 acts as a prebiotic for enhancing the intestinal adhesion capacity of Lactobacillus reuteri JN101. Int J Biol Macromol. 2019; 146:482-487. DOI: 10.1016/j.ijbiomac.2019.12.212. View

4.
Mahboub H, Faggio C, Hendam B, Algharib S, Alkafafy M, Hashem M . Immune-antioxidant trait, Aeromonas veronii resistance, growth, intestinal architecture, and splenic cytokines expression of Cyprinus carpio fed Prunus armeniaca kernel-enriched diets. Fish Shellfish Immunol. 2022; 124:182-191. DOI: 10.1016/j.fsi.2022.03.048. View

5.
Jimnez-Fernandez E, Zuasti E, Ruyra A, Roher N, Infante C, Fernandez-Diaz C . Nanoparticles as a novel delivery system for vitamin C administration in aquaculture. Commun Agric Appl Biol Sci. 2014; 78(4):202-3. View