Effect of dietary supplementation of Yeast, Garlic and Enzymes on growth performance and economic evaluation in European Eel (Anguilla anguilla) fry | ||||
| Mediterranean Aquaculture Journal | ||||
| Volume 8, Issue 1, December 2021, Page 42-56 PDF (700.78 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/maj.2021.225682 | ||||
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| Abstract | ||||
| This study was conducted to investigate the effect of feeding three commercial feed additives Tonilisat® (Saccharomyces cerevisiae), Garlin® (26% allicin), Enziver® (Multi-enzymes) and different mixtures of them on growth performance, feed utilization, body composition and cost benefit of European eel (Anguilla anguilla) fry. A total of 160 European eel fry (3.0±0.2 g/fish) were divided into 8 groups (10 fish/tank in two replicates) for 120 days. Eight dietary treatments were conducted as follow: the first diet considered to be the control without any additives. The second and third diets contain 0.2% of Tonilisat® and Garlin®, respectively. The fourth diet contains 0.1% of Enziver®, The fifth diet contains a mixture of 0.1% Tonilisat® with 0.1% Garlin®, the sixth diet contains a mixture of 0.1% e Tonilisat® with 0.05% Enziver®, the seventh diet contains a mixture of 0.1% Garlin® with 0.05% Enziver®, and the eighth diet contains a mixture of 0.1% Tonilisat® , 0.1% Garlin® and 0.05% Enziver®, respectively. The obtained results indicated that growth performance, feed conversion ratio and nutrient utilization were significantly improved in eels fed diet supplemented with multi-enzymes and different mixtures of feed additives. The survival rate (%) and whole body proximate composition didn’t differ significantly among different experimental groups. Meanwhile, the profit index improved significantly with multi-enzyme supplementation and the combinations of yeast, garlic and multi-enzyme increased diets benfits. Therefore, it’s reasonable to incorporate exogenous multi-enzymes or combination of yeast, garlic and multi-enzyme in the diets of European eels. | ||||
| Keywords | ||||
| Feed additives; Eel (Anguilla anguilla); Growth performance; feed utilization; economic evaluation | ||||
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