<b>Dietary level of vitamin E and selenium on diets for post larvae of <em>Macrobrachium amazonicum</em></b> - DOI: 10.4025/actascianimsci.v26i1.1965

Abstract

The objective of this study was to determine the best dietary level of vitamin E and selenium on diets for Amazon prawn, Macrobrachium amazonicum (Crustacea). Thus, post-larvae of 280mg average weight and 20.60mm average length were kept in 28 aquaria (12.00L) supplied with water. They were maintained in automatic control of temperature, in a completely randomized factorial experiment 3x2 design, plus an additional treatment, with four replications each treatment. The post-larvae were fed with purified diets supplemented with three vitamin E levels (100.00; 200.00 and 400.00mg/kg), two levels of selenium (0.50 and 1.00mg/kg) and an additional treatment (without vitamin E and selenium supplementation). After 30 days, the weight gain, apparent feed conversion, survival rate and muscle selenium concentration were evaluated. results indicated that diets supplemented with 200.00mg of vitamin E/kg and 0.50 selenium/kg provided the best weight gain and apparent feed conversion; 100.00mg of vitamin E/kg and 0.50mg of selenium/kg supplementation provided the best survival rate; and diets supplemented with 200.00mg of vitamin E/kg and 1.00mg of selenium/kg determined the highest muscle selenium concentration. The results indicated that diets supplemented with 200.00mg of vitamin E/kg and 0.50 selenium/kg can be recommended in diets to post larvae of Amazon prawn.