Benefits of Natural Immunostimulants Derived from Fruit By-Products Added to the Diet of Litopenaeus vannamei: Growth, Intestinal Microbiota, Digestive Enzyme Activities, Immune Responses and Economic Values
Ashry et al., O. (2023). Benefits of Natural Immunostimulants Derived from Fruit By-Products Added to the Diet of Litopenaeus vannamei: Growth, Intestinal Microbiota, Digestive Enzyme Activities, Immune Responses and Economic Values. EKB Journal Management System, 27(5), 759-780. doi: 10.21608/ejabf.2023.322907
Ola A. Ashry et al.. "Benefits of Natural Immunostimulants Derived from Fruit By-Products Added to the Diet of Litopenaeus vannamei: Growth, Intestinal Microbiota, Digestive Enzyme Activities, Immune Responses and Economic Values". EKB Journal Management System, 27, 5, 2023, 759-780. doi: 10.21608/ejabf.2023.322907
Ashry et al., O. (2023). 'Benefits of Natural Immunostimulants Derived from Fruit By-Products Added to the Diet of Litopenaeus vannamei: Growth, Intestinal Microbiota, Digestive Enzyme Activities, Immune Responses and Economic Values', EKB Journal Management System, 27(5), pp. 759-780. doi: 10.21608/ejabf.2023.322907
Ashry et al., O. Benefits of Natural Immunostimulants Derived from Fruit By-Products Added to the Diet of Litopenaeus vannamei: Growth, Intestinal Microbiota, Digestive Enzyme Activities, Immune Responses and Economic Values. EKB Journal Management System, 2023; 27(5): 759-780. doi: 10.21608/ejabf.2023.322907

Benefits of Natural Immunostimulants Derived from Fruit By-Products Added to the Diet of Litopenaeus vannamei: Growth, Intestinal Microbiota, Digestive Enzyme Activities, Immune Responses and Economic Values

Egyptian Journal of Aquatic Biology and Fisheries
Article 45, Volume 27, Issue 5, September and October 2023, Page 759-780  XML PDF (740.55 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2023.322907
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Author
Ola A. Ashry et al.
Abstract
The purpose of this study was to evaluate the effect of two fermented fruit wastes (FFW) as feed additives on the growth rate, economic analysis, intestinal microbiota, digestive enzymes, and gene expression in the postlarvae (PL) of Litopenaeus vannamei. Three diets (38% crude protein, 9% crude lipid) consisting of T0 (control), T1 (2.5% fermented grape bagasse) and T2 (2.5% fermented banana peels) were devised and given to the shrimp PL (n = 80 PL/tank in triplicate) for 45 days. The findings showed that adding dietary FFW supplements to shrimp diets significantly improved their survival rate (S%), final body weight (FBW), weight gain (WG) and specific growth rate (SGR). The feed conversion ratio (FCR) was also reduced by the FFW. There was an increase in the total bacterial count (TBC) in water and shrimp intestines, while total vibrio count (TVC) was reduced by the FFW. The addition of FFW could considerably enhance the activities of the investigated enzymes in the intestine, hepatopancreas and stomach, especially in T2 followed by T1 (P< 0.05). Furthermore, the levels of all studied genes in the shrimp's hepatopancreas given fermented banana peels were considerably greater (P< 0.05) than those of the control group. The results indicated that the shrimp fed with fermented banana peels presented the highest growth rate, better digestibility, and growth-related and immune-related genes. In conclusion, FFW can be used in modest amounts as immunostimulants in shrimp diets to promote the growth and health of shrimp.
Keywords
Immunostimulants; Fermented fruit waste; Intestinal microbiota; Digestive enzymes; Gene expression; Litopenaeus vannamei
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