Journal Pre-proof Optimizing feed automation: improving timer-feeders and on demand systems in semi-intensive pond culture of shrimp Litopenaeus vannamei João Reis, Romi Novriadi, Anneleen Swanepoel, Jingping Guo, Melanie Rhodes, D. Allen Davis PII: S0044-8486(19)31264-5 DOI: https://doi.org/10.1016/j.aquaculture.2019.734759 Reference: AQUA 734759 To appear in: aquaculture Received date: 20 May 2019 Revised date: 19 November 2019 Accepted date: 19 November 2019 Please cite this article as: J. Reis, R. Novriadi, A. Swanepoel, et al., Optimizing feed automation: improving timer-feeders and on demand systems in semi-intensive pond culture of shrimp Litopenaeus vannamei, aquaculture (2019), https://doi.org/10.1016/ j.aquaculture.2019.734759 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier.