dc.description.abstract | To determine the effects of Terminalia catappa extract
(TCE) immersion on the survival and hematological profile of
Betta sp, a group of fish was immersed in 500 ppm TCE and
compared with the control group. After three days of immersion,
survival, leukocyte (WBC), erythrocyte (RBC), hemoglobin (Hb),
hematocrit (Hct), platelet (PLT), and differential leukocyte counts
were compared between the two groups. Surviving fish from each
group were then divided into three subgroups: subgroup without
injection; subgroup injected with normal saline; subgroup injected
with Aeromonas hydrophila. Survival, WBC, RBC, Hb, Hct, PLT,
the percentage and number of lymphocyte, monocyte, and
granulocytes post injection were evaluated for 48 h. The results
showed that the survival of immersed fish was significantly higher
than that in the control. No significant differences in the
hematological profile were noted between the control and the
immersed fish. The WBC of control subgroup (A. hydrophila
injection) was significantly increased after 24 h. The fish
immersed and injected with A. hydrophila had the highest PLT.
The number of lymphocytes of all subgroups of fish was stable
while the percentage of monocytes and granulocytes of the
subgroups of immersed fish were increased. This finding
suggested that 500 ppm of TCE is beneficial for improving
survival, blood profile, and resistance to A. hydrophila. | |