Using the Dried Yeast (Saccharomy cescerevisiae) as a Growth Promoter in the Nile Tilapia (Oreochromis niloticus) Diets | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 43, Volume 28, Issue 2, March and April 2024, Page 699-716 PDF (1.31 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2024.350081 | ||||
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| Author | ||||
| Hesham Abozaid et al. | ||||
| Abstract | ||||
| This study aimed to assess the impact of incorporating dried yeast (Saccharomyces cerevisiae) on growth performance, feed utilization, body composition, blood parameters, and economical evaluation. 120 fish post-acclimatization were randomly assigned to 12 experimental aquariums. In this setup, three aquariams acted as replicates for each treatment, with an average initial weight of 28.55± 0.82g. Saccharomyces cerevisiae (Sc) levels of 0, 0.4, 0.8, and 1.2% (equivalent to 0, 4, 8, and 12g for diets D1, D2, D3, and D4, respectively) were used. The feeding trial lasted 56 days. The results revealed that diets varied in crude protein (CP) from 30.15 to 30.80% and gross energy from 4543 to 4559kcal/ kg DM. Mortality rates were 6.67% in the control and zero in the other groups. Protein efficiency ratio (PER) increased with 12g Sc/ kg-1 diets. Serum proteins rose at this level, while ALT, AST, and uric acid peaked at 4g Sc/ kg. Body composition changed, where moisture, crude protein, and ash increased, whereas ether extract and growth energy decreased. Energy retention (ER)% decreased, while protein productive value (PPV)% was enhanced. Net improvements of 6.80, 9.47, and 19.03% were evident in D2, D3, and D4, respectively, compared to controls. In conclusion, Saccharomyces cerevisiae acts as a growth promoter, especially at 12g/ kg-1 feed. These findings illuminate the potential benefits of incorporating Sc in fish diets for enhanced performance and economic gains. | ||||
| Keywords | ||||
| Blood constituents; Economical evaluation; Feed utilization; Nile tilapia fish; Productive performance; Saccharomy cescerevisiae | ||||
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