EFFECT OF CINNAMALDEHYDE AND YEAST ON GROWTH PERFORMANCE, FEED UTILIZATION AND ITS ANTIBACTERIAL ACTIVITY AGAINST FISH PATHOGENS OF
NILE TILAPIA FINGERLINGS
Nehad M.1; A.E.
Eid1; B.A. Ali1; Ali Wahdan2;
M.E. Enany2 and Asmaa S. Abd El-Naby3
1Faculty of Agriculture,
Suez Canal University, Ismailia, Egypt.
2Department of Bacteriology, Immunology and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt.
3Department of Fish Nutrition, Central Laboratory for Aquaculture Research, Abbaasa, Abu-Hamaad, Sharkia, Egypt.
| Received 1 /1 /2020 |
Accepted 30 /1 /2020 |
ABSTRACT
This experiment was conducted to study the effects of cinnamaldehyde and yeast with or without combination of optimal dose of phytase and citric acid on growth performance, feed utilization, body composition, economical evaluation and its antibacterial activity against fish pathogens of Nile tilapia fingerlings. Five experimental diets (Treatments) were composed of T1 as the control with no additives, T2 was supplemented with 1g/kg of Biotronic® Top3; T3 also supplemented with (1g/kg of Biotronic® Top3 in addition to 1000 FTU/Kg phytase and 30 g/kg citric acid). While T4 was supplemented with 4g/kg of Levabon® Aquagrow E; T5 also supplemented with (4g/kg of Levabon® Aquagrow E in addition to 1000 FTU/Kg phytase and 30 g/kg citric acid). The results indicated that the best growth performance and feed utilization of Nile tilapia fingerlings fed on T3 while, the lowest group fed on control. Antibacterial activity showed that the combination between Biotronic® Top3, citric acid and phytase had a potent activity against all tested isolates compared with antibiotics. It could be concluded that using combination of Biotronic® Top3 as cinnamaldehyde, phytase and citric acid was recommended to improve growth performance, feed utilization, body composition and the immune response of Nile tilapia fingerlings under these experimental conditions and could reduce the feed cost.
Keyword:
Cinnamaldehyde, yeast, phytase, citric acid, Nile tilapia, fingerlings, growth performance, feed utilization, Antibacterial Activity.
