Enrichment of nutrition of Brachionus spp. in the tropical areas

Larvae feeds incorporating Brachionus spp. play a great role in fish cultivation. However, the development and nutritional content of Brachionus spp. depends on the nutrient enrichment provided. This study aims to determine the best nutrient enrichment for Brachionus spp. cultivated in the tropical areas. This research applied an experimental method with a completely randomized design (CRD) with 5 treatments and 4 replications. The data was analyzed with ANOVA and Duncan's multiple range test. The five nutrient enrichments used are as follows: Chaetoceros spp., Tetraselmis spp., yeast, Chaetoceros spp. + yeast, Tetraselmis spp. + yeast. From the treatment groups, the nutrient enrichment using Chaetoceros spp. resulted in the highest population, producing 97 ind mL^-1. The treatment group with the nutrient enrichment using Chaetoceros spp. + yeast presents the highest protein content, of 14.52%. The best nutrition for Brachionus spp. cultivated in the tropics are feeds made of Chaetoceros spp., according to the results.