EVALUASI KUALITAS AIR PADA SISTEM RESIRKULASI BUDIDAYA IKAN GURAMI, Osphronemus goramy MENGGUNAKAN PEMODELAN DINAMIKA SISTEM

Astried Sunaryani, T. Jasalesmana, Livia Rossila Tanjung
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Abstract

Perkembangan teknologi dalam pembudidayaan ikan menggunakan sistem resirkulasi sangat cepat dalam beberapa tahun terakhir karena bersifat ramah lingkungan dan memberikan banyak keuntungan yaitu mampu memproduksi ikan dengan kepadatan tinggi. Namun, penurunan kualitas air akibat limbah dari feses dan sisa pakan dapat membahayakan sintasan ikan. Penelitian ini dilakukan untuk mengevaluasi kualitas air, khususnya konsentrasi amonia pada sistem resirkulasi budidaya ikan gurami, Osphronemus goramy melalui pemodelan dinamika sistem. Simulasi pemodelan dilakukan dengan software Vensim PLE menggunakan data sekunder. Selama 30 hari periode simulasi, konsentrasi amonia dalam kolam ikan meningkat sampai dengan hari ke-15, kemudian turun bertahap hingga hari ke-30. Konsentrasi amonia yang aman diperoleh dari laju resirkulasi 50 dan75 L/jam dengan sintasan ikan gurami 95%. Persentase eror sebesar 8,6% dibandingkan dengan data hasil penelitian sebelumnya menunjukkan bahwa model dinamika sistem ini valid dan dapat digunakan untuk pemantauan kualitas air, khususnya amonia, dalam budidaya ikan gurami yang menggunakan sistem resirkulasi.The development of recirculating aquaculture systems (RAS) has been rapidly increased in recent years due to environmental and economic advantages, i.e., the system can support farmed fish at high density. However, declining water quality in RAS could occur as a result of the accumulation and decomposition of fecal and uneaten feed materials that can be harmful to fish. This study was conducted to evaluate water quality, particularly the concentration of ammonia in the recirculation system of gouramy, Osphronemus goramy aquaculture through a system dynamics model. The model simulation was performed via Vensim PLE software using datasets from secondary sources. During the 30-days of simulation period, the ammonia concentration in the fish pond increased until day 15, then decreased gradually until day 30. Safe ammonia concentrations were obtained from recirculation rates of 50 and 75 L h-1 with gouramy survival rate of 95%. The percentage error of 8.6% compared to the previous experimental data shows that the prediction of the developed system dynamics model is valid and acceptable. The model can therefore be used for water quality monitoring, particularly for ammonia concentration in gouramy farming using recirculating aquaculture systems.
Osphronemus goramy利用系统动态建模对鲤鱼养殖的再循环系统的水质评估
近年来,利用循环系统进行的技术发展非常迅速,为生产高密度鱼类提供了巨大的优势。然而,废物、废物和残留饲料导致的水质下降可能会危及鱼的生存。这项研究是为了评估水的质量,特别是谷类鱼养殖系统Osphronemus goramy的再循环系统中氨的浓度。建模模拟是用解耦数据进行的。在模拟的30天内,鱼塘中的氨浓度上升到15天,然后逐渐下降到30天。氨的安全浓度来自每小时50丹75 L/小时的再循环速度,而福音鱼的传播速度是95%。与之前的研究数据相比,eror百分比为8.6%,表明该系统的动态模型是有效的,可以用于监测水的质量,特别是用于利用再循环系统养殖中的氨。环境和经济高级发展的发展在高级环境和经济发展方面一直在迅速增长。悬垂的水质量可能是对鱼类有害的产品的替代品。这项研究的目的是评估水质量,特别是高尿道系统的氨集中,经系统动力学模型的高尿道。模拟模型是通过企业软件从secondary sources获取数据进行的。在周期模拟的30天内,鱼池塘里的氨增加到15天,然后脱氧,直到30天。安全的氨集中在50到75 L h-1的累积速率上,95%的风速为gouramy survival rate。前8.6%的错误与前6%的数据显示,开发系统dynamics的预测模型是有效和可接受的。模型可能会被用来进行水质监测,主要用于利用利用水压系统进行采暖化。
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