¹Kiki Haetami,² Juniano, ³Abun

¹,²,³Fish Department, Faculty of Fishery and Marine Science, Padjadjaran University, Jl. Raya Bandung – Sumedang Km 21,Jatinangor 45363, Indonesia

The nutritional content that is balanced and in accordance with the needs of fish will be utilized by fish as a source of energy used for growth. The used of feed alternative from coconut testa bioconversion has been investigated for its effect on the growth performance of red tilapia stadium fingerling. The chemical composition of coconut testa, survival rate and water quality (temperature, pH and dissolved oxygen) were analysed descriptively. The experiment was carried out experimentally using a Completely Randomized Design (CRD), which consisted of four levels of using coconut testa bioconversion by Rhizopus oryzae in feed (0%, 5%, 10%, 15%, and 20%). The performance parameters measured consisted of Average daily gain, feed efficiency, and protein efficiency ratio. Data were analyzed using the Analysis of Variance (ANOVA) with a 95% confidence level, and Duncan's multiple distance test. The chemichal change, survival rate. The study showed that the bioconversion of R. oryzae coconut testa up to 20% in the feed formulation could provide the performance of red tilapia fry, with the highest value obtained at the use of 15% with an average feed efficiency of 42.43 ± 0.71.

Red tilapia, coconut testa, bioconversion, Rhizopus oryzae, performance.

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