The Effect Of Vitamins On The Growth And The Activities Of Enzymes Of Macrobrachium Rosenbergii

A trial was conducted to study the influences of different levels of three kinds of vitamins(vitamin A, vitamin B1, vitaminB5) on survival, weight, gaining rate and the activities of three kinds of enzymes of Macrobrachium rosenbergii. The result showed that the optimum requirement of vitamin A for the prawn was 60mg in the diet of 1 000g, which could gain the highest growing rate and survival rate of the prawn. If the content of vitamin A was lower or higher than 60mg in diet of 1000g, it could reduce both on growing rate and survival rate. The activities of tryptase, alkaline phosphatase in hepatopancreas and SOD in the muscle were the highest when the content of vitamin A was 60mg in diet of 1000g. Either deficit or excess of vitamin A in the diet would reduce the activities of the three kinds of enzymes. For vitamin BI, the optimum requirement was 60 mg in the diet of 1000g. The growing rate, survival rate and three kinds of enzymes was the highest when the content of VB1 in the diet of 1000g was 60mg. The growing rate, survival rate and the activities of alkaline phosphatase and SOD was the highest when the content of VB5 in the diet of 1000g was 300mg. Either deficit or excess of vitamin VB5 would reduce the activities of alkaline phosphatase and SOD.The diet added with vitamin VB5 could raise the activities of tryptase, but excess of vitamin VB5 did not reduce the activities of tryptase. We concluded that the optimum requirement of vitamin A, vitamin B1, vitamin B5 for Macrobrachium rosenbergii was 60mg, 60mg, 300mg in the diet of 1000g.