Abstract
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. Keywords: Anaesthetic, Clove powder ( Syzygium aromaticum ), Tilapia, Efficacy
Highlights
Fizsimmons (2016) observed that the tilapine species are the most cultured world over next to salmon and world tilapia production was expected to exceed 5,576,800mt and that from aquaculture was estimated 600,000mt produced in more than a hundred and forty countries
The genera Oreochromis, Sarotherodon and Tilapia are cultured both in brackish and freshwater areas under any culture systems in the Niger Delta because they can be managed with minimal skill and a good part of those engaged in the venture do so with minimal ease
Both synthetic and non-synthetic anaesthetics are effectively used to manage and reduce stress to the barest minimum possible when carrying out various onfarm procedures in aquaculture
Summary
Fizsimmons (2016) observed that the tilapine species are the most cultured world over next to salmon and world tilapia production was expected to exceed 5,576,800mt and that from aquaculture was estimated 600,000mt produced in more than a hundred and forty countries. Anaesthtics have been effectively used to handle stress of transportation and other onfarm-related procedures in various fish species including tilapia (Matin, et al, 2009) that are detrimental to the growth and productivity of farm raised fish (Petric, et al, 2006), and in extreme cases cause mortality (Akinrotimi et al, 2015) Both synthetic and non-synthetic anaesthetics are effectively used to manage and reduce stress to the barest minimum possible when carrying out various onfarm procedures in aquaculture. The search is for anaethetics from natural sources termed “green anaesthetics” that are readily available, cheap, easy to apply, environmentally friendly with minimal or no impact to the consumers’ health Such anaesthetics are sourced from commonly available plants and should have the ability to effect induction in exposed fish within a short time (3min.) with a recovery time of about 5mins (Ross and Ross, 2008). The objective of the study was to assess the anaesthetic potential of the flower bud of clove tree on the induction and recovery times for the three life stages of three commercially important tilapine species: S. melanotheron, O. niloticus and T. guineensis
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Applied Sciences and Environmental Management
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
