Pohan Panjaitan

INOVASI TEKNOLOGI BUDIDAYA UDANG VANAME TANPA PERGANTIAN AIR MELALUI MANIPULASI RASIO C:N MENGGUNAKAN MOLASE SEBAGAI SUMBER KARBON ORGANIK

Introduction

Inovasi teknologi budidaya udang vaname tanpa pergantian air melalui manipulasi rasio c:n menggunakan molase sebagai sumber karbon organik . Inovasi budidaya udang Vaname tanpa ganti air. Manipulasi rasio C:N dengan molase efektif kurangi nitrogen anorganik dan tingkatkan pertumbuhan udang.

Abstract

Salah satu kendala utama pengembangan budidaya intensif adalah akumulasi nitrogen anorganik beracun yang harus dijaga sangat rendah dengan pertukaran air yang sering atau daur ulang air melalui biofilter. Studi ini menjelaskan metode lain untuk menghilangkan nitrogen anorganik menggunakan populasi bakteri heterotrofik yang ditambah dengan penambahan zat karbon, molase, untuk meningkatkan rasio umpan C:N di bawah kondisi laboratorium. Tujuan utama studi laboratorium adalah untuk mengetahui korelasi tingkat rasio C:N dengan kadar amonia, nitrit, oksigen terlarut, pH dan pertumbuhan udang dalam budidaya udang Penaeus monodon dengan Zero Water Exchange Model (ZWEM) menggunakan molase sebagai sumber karbon. Ditemukan bahwa penambahan tetes tebu pada tambak udang dengan ZWEM berperan dalam menghilangkan amonia dan nitrit. Selain itu, pemberian molase pada tangki laboratorium meningkatkan pertumbuhan dan persentase pertambahan berat udang serta meningkatkan populasi bakteri heterotrof. Avnimelecch, 1999 melaporkan bahwa pertumbuhan ikan di kolam yang diberi perlakuan dengan rasio C : N =16,6 : 1 secara signifikan lebih tinggi daripada ikan yang dibudidayakan di kolam yang diberi perlakuan dengan rasio C : N 11,1 : 1. Juga McIntonsh (2000) telah menumbuhkan udang putih berhasil di tambak dengan zero water exchange nodel usibg grain-based petelet ( 18 % protein) dengan rasio C : N 20,0 : 1.

Review

This study introduces an innovative approach to sustainable shrimp aquaculture by tackling the persistent issue of toxic inorganic nitrogen accumulation, which typically necessitates frequent water exchange or elaborate biofiltration systems. The paper investigates the efficacy of manipulating the carbon-to-nitrogen (C:N) ratio through the addition of molasses, an organic carbon source, to foster heterotrophic bacterial populations within a Zero Water Exchange Model (ZWEM). This method holds significant promise for reducing environmental impact and operational costs associated with intensive aquaculture, positioning the research as highly relevant to current challenges in the industry. The abstract highlights several positive findings: the successful removal of ammonia and nitrite, enhanced shrimp growth and weight gain, and an observed increase in heterotrophic bacterial populations, all attributed to molasses supplementation. These outcomes are supported by references to previous work demonstrating the benefits of higher C:N ratios in aquaculture systems. However, a significant discrepancy needs immediate clarification: the title explicitly refers to "Udang Vaname" (Litopenaeus vannamei), while the abstract states "Udang Penaeus monodon" (Penaeus monodon) as the subject of the study. This fundamental difference in species must be resolved as it impacts the specific applicability and interpretation of the results. Furthermore, while the abstract lists the main objective as correlating C:N ratio with various parameters, it lacks specific quantitative data or the C:N ratios actually tested in this study, making it difficult to assess how well this correlation was established or what the optimal findings were. Despite these critical points, the study presents a compelling concept with strong potential for practical application, especially given the accessibility and cost-effectiveness of molasses as a carbon source. To enhance the manuscript's clarity and scientific rigor, the authors are strongly advised to rectify the species inconsistency between the title and abstract, provide more detailed quantitative results pertaining to the tested C:N ratios and their specific effects on water quality parameters and shrimp growth, and include more specifics on the experimental methodology. Addressing these areas will significantly strengthen the paper and solidify its contribution to the field of sustainable aquaculture.

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