Abstract
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.
Highlights
The provision of sustainable artificial feed both in quality and quantity is one way to increase the value of aquaculture production
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
The results showed that the range of survival values in red tilapia ranged from 93.33% to 100%, which means that the use of coconut testa bioconverted up to 20% did not cause fish death so that the dose was included in the safe limit to be mixed with feed
Summary
The provision of sustainable artificial feed both in quality and quantity is one way to increase the value of aquaculture production. The feed given must be in accordance with the nutritional needs of fish for the survival, growth, and development of fish. Inefficient feed will increase production costs while excessive and inedible feed will cause toxins that are harmful to fish survival(Siregar & Adelina, 2012). Coconut testa processing through bioconversion is one of the efforts made to improve the quality of feed ingredients. Based on the results of the proximate analysis, the composition of the coconut testa consists of 8.10% crude protein, 48.72% crude fat, 31.3% crude fiber, 2.38% ash (Salza Biila Nuha et al, 2019). Mold is a microorganism capable of using cellulose as a carbon source for its growth(Endrawati & Kusumaningtyas, 2018)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Multidisciplinary Research and Analysis
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
