Effect of some hormones on the muscle tissue biochemical contents of the fresh water fish Notopterus notopterus

Abstract

The uses of steroid hormones as dietary supplements for growth production are an accepted practice in cattle industry. In the present study an effort is made to understand the importance of the hormone such as testosterone and thyroxin on muscle tissue biochemical changes. In muscle the protein and glycogen content is increased in the testosterone treated fish in comparison to control during all the four reproductive phases. The lipid content of muscle in the testosterone treated fish is found to be increased in all the reproductive phases, where as the cholesterol content of muscle in testosterone treated fish is decreased during preparatory and pre spawning phase, while it is reached maximum during spawning and post spawning phase as compared to control fishes. The biochemical contents were also estimated in the fish implanted with thyroxin tablets during pre spawning phase. The result indicated that the muscle protein, glycogen, lipid and cholesterol contents were less in thyroxin treated fish as compared to control fishes.