Performances of 2 phenoxyethanol and quinaldine with oxygen in the live truck transportation of rohu fingerlings

Abstract

The effectiveness of 2 phenoxyethanol (2 PE), quinaldine (2-methyl quinoline), benzocaine (ethyl 4 aminobenzoate) and tertiary amyl alcohol (TAA) was tested to determine their optimal dosages for rapid induction and recovery in the first experiment, while the second experiment evaluated the effects of low dose quinaldine (175 ?l/L) and 2 PE (250 ?l/L) with oxygen for 1, 3, 6 and 9 h on the mortality and water qualities at 400 g/L rohu Labeo rohita fingerlings in a truck transport simulation. Optimum dosages of 2 PE (250 ?l/L), quinaldine (175 ?l/L), benzocaine (40 mg/L) and TAA (1.5 ml/L) were found to have rapid (within 6 min) immobilization and recovery. Very low level of immediate and delayed mortality (<1%) was found across all three transport methods. While 2 PE had dissolved oxygen (DO) concentration above 13 mg/L, quinaldine had lower level. Results suggest that rohu fingerlings at 400 g/L can be transported for 9 hours with oxygen with or without sedatives.

DOI: http://dx.doi.org/10.3329/jasbs.v39i2.17858

J. Asiat. Soc. Bangladesh, Sci. 39(2): 201-209, December 2013