| Items |
0.0 % (control) |
At Origanum vulgare extract % in the diets |
| 0.50% |
1.00% |
1.50% |
| Initial weight (g) |
12.27 ± 0.46a |
12.17 ± 0.15a |
12.37 ± 0.50a |
12.23 ± 0.36a |
| Final weight (g) |
29.30 ± 0.67c |
36.00 ± 0.85a |
34.40 ± 0.55ab |
32.37 ± 0.74b |
| Weight Gain (g) |
17.03 ± 0.52c |
23.83 ± 0.97a |
22.03 ± 0.33ab |
20.14 ± 0.87ab |
| Weight Gain % |
138.79 ± 7.03c |
195.81 ± 9.99a |
178.09 ± 9.13ab |
164.68 ± 6.02bc |
| SGR (% day) |
1.24 ± 0.03c |
1.55 ± 0.05a |
1.46 ± 0.05ab |
1.39 ± 0.03b |
| Survival rate (%) |
93.30 ± 3.85a |
100 ± 0.0a |
100 ± 0.0a |
96.03 ± 0.33ab |
|
| Means the same letter (a/b/c) in the same row is not significantly different at P<0.05. |
| Table 3: Growth performance (means ± SE) of Nile tilapia fed diets containing
different levels of Origanum vulgare extract. |
