Growth Performance of Mahseer Fish (Tor Tambroides) in Different Types of Cultured Environments

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Ekachai Duangjai Jittra Punroob

Abstract

The growth performance of adult Thai mahseer fish (Tor tambroides) cultured in different type of cultured environments was investigated. Four type of cultured environments, namely: bamboo cages, nylon cage, screen-fishing net cage, and pens culture for G1, G2, G3 and G4, respectively, were studied with two replications. The experiment was conducted in the reservoir without controlling external factors of water at Rajamangala University of Technology Lanna, Nan during March – May 2017. Adult of Thai mahseer fish with initial weight and length about 70 g and 17 cm were used in this experiment with stocking density of 10 fish m-3. Fish were randomly checked for growth performance every 30 days for 90 days. The results showed that types of cultured environments had significantly affected (P < 0.05) on growth performance, such as the average weight gain, average daily weight gain and specific growth rate, but had no significant influence (P >0.05) on survival rate of fish in four group observation. The highest (P< 0.05) of these growth performance was found in fish of group 1 when compared with group 2 3 and 4, respectively. On the other hand, the types of cage culture had significantly affected on feed utilization (feed conversion ratio). The lowest of feed utilization still was in fish of group1. Water quality parameters in each cage culture were still within the acceptable tolerance or desirable ranges for culturing of aquatic animals. Therefore, the cage culture constructed with bamboo was recommended for culturing of adult Thai mahseer fish, when consider in better growth performance and also water quality.


 

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บทความวิจัย