Asian-Pacific Aquaculture 2019

June 19 - 21, 2019

Chennai Tamil Nadu - India

ANAESTHETIC EFFICACY OF 2-PHENOXYETHANOL IN FINGERLINGS OF KOI CARP Cyprinus carpio

Aruljothi K*, Karal Marx K, Angela Mercy A, Malathi S, Ambika Binesh and V. Kaliyamurthi
Institute of Fisheries Post Graduate studies
TNJFU-OMR Campus, Vaniyanchavadi, Chennai - 603 103
thijolrua@gmail.com
 

The transport of live fishes has become an important aquaculture practice. Because of live fish trade, especially the live ornamental fish is emerging as a major business venture. Use of anaesthetics with optimum concentration could mitigate the stress and its related harm in fish, by increasing fish welfare, production and profitability.

Efficacy of 2-phenoxyetyhanol for koi carp fingerlings exposed to four concentrations (100µlL-1, 200µlL-1, 300µlL-1 and 400 µlL-1) were evaluated. The time periods necessary for induction and recovery of each concentration were recorded. Water quality parameters were recorded in all the four concentrations and control: Temperature (27.6±0.19°C), DO (5.54±0.52 mg/l), CO2 (5.44±0.93 mg/l), Salinity (1.12±0.50) and pH (7.36±0.10). Results showed that, there was significant difference (P<0.05) of induction time between concentrations of 100µlL-1, 200µlL-1, 300µlL-1 and 400 µlL-1. The induction time was decreased with the increased concentration of 2-phenoxyethanol. Recovery time also showed concomitant difference (P<0.05) with the concentration of 100µlL-1, 200µlL-1, 300µlL-1 and 400 µlL-1. Concentration of 300µlL-1 (induction time: 4.07±0.03 seconds and recovery time: 15.03±0.01seconds) was determined as the minimum effective concentration that induced anaesthesia and transportation of koi carp fingerlings (Table 1 & 2).