Increasing The Stocking Density of Grouper Nurseries for Aquabusiness Efficiency in Recirculating Aquaculture System (RAS) with Bioremediation

Abstract

Water quality improvement was carried out by means of recirculation and bioremediation systems in grouper nurseries with high stocking density, thereby increasing production performance. The goal of this study was to evaluate the effectiveness of aquabusiness by analyzing the rise in grouper nursery stocking density using RAS and bioremediation systems. The test parameters consist of production performance, blood glucose levels, physic-chemistry-biology of water quality, and business efficiency based on productivity and business analysis. Treatment of 1,000 fish/m3 increased survival, blood glucose levels, total bacteria, Vibrio spp., ammonia, nitrite, and all productivity parameters. But it lowers all growth parameters, pH, and dissolved oxygen values. The recirculation system with bioremediation at up to 1,000 fish/m3 of stocking boosted the profit by 2.64 times. and 14.97% more efficient than 500 fish/m3 which could not be matched by the high production performance.

Production Performance and Financial Analysis of Three Segments Business to Support Availability Hybrid Grouper Seeds in Marine Culture

“…Temperature, dissolved oxygen, salinity, and pH still in range that supports nursery of hybrid grouper seeds. Research on nursery business conducted in building semi-indoor room using partially transparent roof covered with shelter for light control, water exchange system system using recirculating aquaculture system (RAS) (Astari et al 2023). Seeds size ± 3 cm from hatchery needs to be reared again in nursery stage to make it easier for marine culture to get grouper seeds of the right size, amount and time as desired (Dennis et al 2020).…”

Su Ürünleri̇ Yeti̇şti̇ri̇ci̇li̇ği̇nde “Bi̇yoremedi̇asyon”

“…Su ürünleri yetiştiriciliğinde kullanılan kapalı devre sistemler, biyoyumak teknolojisi, akuaponik sistemler, entegre multi-trofik su ürünleri yetiştiriciliği sistemleri, üretim süresince su kalitesinin korunmasına yönelik biyolojik yöntemlerin yer aldığı biyoremediasyon uygulamalarını içermektedir. , biyoyumak, kapalı devre sistemler gibi farklı su ürünleri üretim sistemlerinde yer almaktadırlar.Astari ve diğerlerine göre kapalı devre sistemde yüksek yoğunlukta ön büyütmesi yapılan orfozların yetiştirildiği sisteme biyoremadiasyon ajanı olarak, Lactobacillus casei ve Saccharomyces cerevisiae ilave edildiğinde su kalitesi iyileşmekte ve üretim performansı artmaktadır[29]. Kapalı devre sistem ile kırmızı hibrit tilapia (Oreochromis niloticus×Oreochromis mossambicus) yetiştirilen havuzlarda azotlu atıkların uzaklaştırılması için suda yaşayan çiçekli bitkiler (Canna generalis, Typha angustifolia, Echinodorus cordifolius ve Cyperus involucratus) kullanılmaktadır.…”