Efficacy of Clove flower bud powder as anaesthetic for three life stages of S. melanotheron , O. niloticus and T. guineensis|
GABRIEL, U.U. & UGBOMEH, A.P.
Clove bud powder was used on three life stages of
Sarotherodon melanotheron, Oreochromis niloticus
and Tilapia guineensis to test its efficacy as an anaesthetic. Different
concentrations were used in triplicate on 10 samples of adults, juveniles and fingerlings in 30L
plastic aquaria and induction and recovery times were recorded. In S. melanotheron- The range
of the induction time for the fingerlings, juveniles and adults from 5mg/l to 30mg/l were: 52.00
± 4.71 - 107.40 ± 12.43s, 43.00 ± 4.83 - 98.70 ± 3.92s, and 45.60 ± 4.48 - 89.80 ± 3.93s,
respectively. The recovery time at 5mg/l compared with that at 30 mg/l were: fingerlings- 62.0
± 4.45 and 125.40s, 84.80 ± 6.76 and 165.20 ± 10.05s, and 94.80 ± 6.49 and 194.40 ± 10.84s.
Times of induction and recovery differed (p < 0.05) among the life stages. In O. niloticus,
induction was effected in the fingerlings, juveniles and adults in 118.10 ± 4.46s, 114.00 ± 5.25s
and 52.60 ± 4.55s at 5 mg/l; 60.60 ± 9.75s, 52.60 ± 4.56s and 55.60 ± 4.48s for 30mg/l,
respectively. The induction time in juveniles across the concentrations was generally lower than
that for the other life stages. In T. guineensis, the range of the induction time for the fingerlings,
juveniles and adults from 5mg/l to 30mg/l were: 52.00±4.71-107.40±12.43s, 43.00±4.83-
98.70±3.92s, and 45.60±4.48-89.80±3.93s, respectively. The recovery time at 5mg/l compared
with that at 30mg/ was: fingerlings- 62.0±4.45 and 125.40s, 84.80±6.76 and 165.20±10.05s, and
94.80±6.49 and 194.40±10.84s.
Anaesthetic; Clove powder (Syzygium aromaticum); Tilapia; Efficacy