The effectiveness of clove seed extracts as a viable
anaesthetic agent in transportation of Tilapia
guineensis were evaluated. Juveniles of T.
guineensis (mean length 13.12cm ±1.20;
mean weight 45.64g ±1.84)
were exposed in three replicates to different concentrations (0.00mg/L-
control; 5.00; 10.00; 15.00; 20.00 and 25.00mg/L) of clove seed aqueous extracts, extracted in water . The exposed fish were later transported in
open plastic tanks from Buguma to Aluu, in Port Harcourt over a distance of
50km. Before and after transportation,
glucose and cortisol levels in the plasma of the fish were assessed. The result of the study indicated a
significant reduction (P<0.05) in the levels of cortisol and glucose in the
plasma of the fish with increasing concentrations of the anaesthetics. The lowest survival rate (30.0%) was recorded
in the fish transported with no anesthetics, while 100% survivals were recorded
in fish exposed to 15.0 and 20.0 mg/L of the extracts. In conclusion, this study suggests that
application of clove seed extracts within the range of 10.00 and 20.00 mg/L
reduced the stress response in T.
guineensis during transportation, thereby enhances their survival.
Konular | Hidrobiyoloji |
---|---|
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 1 Nisan 2016 |
Yayımlandığı Sayı | Yıl 2016 |