International Journal of Marine Science 2016, Vol.6, No.34, 1-7
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Similarly, fish fed GP at 3% graded level had the best feed efficiency ratio (FER). However, there was a
significant difference (P<0.05) between FCR of fish group fed on diet containing 3% graded level of GP and that
of the other fish groups. It was also observed that the FCR recorded in this experiment decreased with increasing
Allium sativum
levels.
Figure 2 Feed consumption rate of
T. zilli
fed Garlic-supplemented diets.
Survival rate exceeded 80% in all treatments (Figure 3) but there were significant differences (P < 0.05) among
the treatments. The highest survival rate of 93.30% was recorded in the treatment fed GP at 3% / kg diet followed
by treatment fed GP at 2% / kg diet which recorded 86.70% survival rate while the least survival rate of 66.7%
was recorded in the basal diet (control group) without garlic. In general, the high survival rate recorded in this
present study is an indication that the garlic-supplemented diets improved the growth and survival rates of
T. zilli
.
Figure 3 Survival rate of
T. zilli
fed garlic-supplemented diets.
Physical and chemical water quality parameters are presented in Table 2. In general, there was no significant
difference (P > 0.05) in the water quality parameters recorded in all the treatments. Results showed that all tested
physical and chemical parameters were within the permissible levels required for tilapia growth.
