Pengaruh Perbedaan Persentase Pergantian Air Terhadap Pertumbuhan dan Kelangsungan Hidup Ikan Sidat (Anguilla bicolor) Stadia Silver Eel

Amanullah, Luthfi Dhia and Dr. Ir. Mohamad Fadjar,, M.Sc. (2023) Pengaruh Perbedaan Persentase Pergantian Air Terhadap Pertumbuhan dan Kelangsungan Hidup Ikan Sidat (Anguilla bicolor) Stadia Silver Eel. Sarjana thesis, Universitas Brawijaya.

Abstract

Ikan sidat merupakan jenis ikan yang memiliki nilai ekonomis tinggi dengan volume ekspor diatas 25%. Pada tahun 2019-2020, Indonesia merupakan eksportir nomor satu sidat di pasar dunia dengan permintaan pasar tertinggi yakni Negara Jepang sebesar 30,14%. Permintaan pasar yang tinggi tidak diimbangi dengan total produksi dengan kapasitas yang besar. Diketahui, Indonesia hanya mampu merealisasikan produksi sebanyak 500 ton dari total 12.000 ton yang diproyeksikan. Beberapa penelitian telah dilakukan untuk mengoptimalkan pertumbuhan ikan sidat, diantaranya yakni melalui perbaikan kualitas pakan yang ditentukan berdasarkan kandungan makro dan mikro nutrisi pakan tersebut meliputi protein, lemak, karbohidrat, vitamin dan mineral. Stadia silver eel merupakan peralihan menuju matang gonad sehingga kebutuhan energi cukup besar, baik digunakan untuk pertumbuhan jaringan maupun proses pematangan gonad. Oleh karena itu, agar kualitas air tetap terjaga diperlukan pergantian air yang memadai. Pergantian air adalah proses mengganti air didalam wadah pemeliharaan menggunakan air yang baru dengan persentase tertentu. Metode penelitian ini menggunakan rancangan acak lengkap dengan kombinasi 3 perlakuan dan 3 kali ulangan. Terdapat perlakuan A dengan pergantian air 10%, perlakua B pergantian air 30% dan juga perlakuan C dengan jumlah pergantian air sebanyak 50%. Pemeliharaan dilakukan selama 38 hari dimana selama masa pemeliharaan, ikan sidat diberikan pakan pasta sidat 1 pro dengan kadar protein 47% dua kali dalam sehari. %FR yang digunakan pada pemeliharaan sebesar 2%. Hasil perlakuan perbedaan jumlah persentase pergantian air terhadap kualitas air, laju pertumbuhan panjang dan bobot harian (SGR), laju pertumbuhan mutlak (GR), dan kelangsungan hidup (SR) dianalisis dengan ANOVA dan uji lanjut BNT menggunakan software SPSS. Kualitas air pada perlakuan A (pergantian air 10%), B (pergantian air 30%), dan C (pergantian air 50%) tidak berbeda signifikan pada suhu, ammonia, nitrit, nitrat, dan fosfat namun berbeda signifikan pada kadar oksigen terlarut (DO). Kadar DO paling optimal didapatkan pada perlakuan B (7.12±0.09 mg/L) dan C (7.08±0.09 mg/L) dan terendah pada perlakuan A (6.76±0.11 mg/L). Sedangkan untuk SGR dan GR pada penelitian ini menunjukan hasil yang berbeda nyata antar perlakuan. Nilai SGR dan GR tertinggi didapatkan pada perlakuan C dengan nilai 0.36±0.07%/hari, 0.29±0.05%/hari dan 15.93±3.39 gr/hari dan kemudian disusul oleh perlakuan B dengan nilai 0.18±0.03%/hari, 0.21±0.07%/hari dan 8.94±2.80 gr/hari. Perlakuan terendah yaitu A dimana mendapatkan hasil 0.06±0.04%/hari, 0.11±0.06%/hari, dan 2.58±1.56 gr/hari. Kelangsungan hidup dalam penelitian ini memiliki nilai tidak berbeda signifikan namun nilai terendah didapatkan pada perlakuan A sebesar 98,3%.

English Abstract

Eel is a type of fish that has high economic value with an export volume of over 25%. In 2019-2020, Indonesia is the number one exporter of eels on the world market with the highest market demand, namely Japan, amounting to 30.14%. High market demand is not matched by total production with a large capacity. It is known that Indonesia is only able to realize production of 500 tons out of a projected total of 12.000 tons. Several studies have been conducted to optimize the growth of eels, including by improving the quality of the feed which is determined based on the macro and micro nutrient content of the feed including protein, fat, carbohydrates, vitamins and minerals. The silver eel stage is a transition to gonad maturity so that the energy requirement is quite large, both used for tissue growth and the gonad maturation process. Therefore, in order to maintain water quality, adequate water changes are needed. Water change is the process of replacing the water in the maintenance container using new water with a certain percentage. This research method used a completely randomized design with a combination of 3 treatments and 3 replications. There was treatment A with a 10% water change, treatment B with a 30% water change and also treatment C with a total of 50% water change. The maintenance was carried out for 38 days where during the rearing period, the eels were given 1 pro eel paste feed with a protein content of 47% twice a day. %FR used in maintenance is 2%. The results of the treatment of the difference in the percentage of water change on water quality, growth rate in length and daily weight (SGR), absolute growth rate (GR), and survival rate (SR) were analyzed by ANOVA and last test using SPSS software. Water quality in treatments A (10% water change), B (30% water change), and C (50% water change) did not differ significantly in temperature, ammonia, nitrite, nitrate, and phosphate but significantly differed in dissolved oxygen levels ( DO). The most optimal DO levels were found in treatment B (7.12 ± 0.09 mg/L) and C (7.08 ± 0.09 mg/L) and the lowest was in treatment A (6.76 ± 0.11 mg/L). Whereas for SGR and GR in this study showed significantly different results between treatments. The highest SGR and GR values were obtained in treatment C with a value of 0.36 ± 0.07%/day, 0.29±0.05%/day and 15.93±3.39 g/day and then followed by treatment B with a value of 0.18±0.03%/day, 0.21±0.07% / day and 8.94 ± 2.80 g / day. The lowest treatment was A, which yielded 0.06 ± 0.04%/day, 0.11±0.06%/day, and 2.58±1.56 gr/day. Survival in this study had no significantly different values but the lowest value was obtained in treatment A of 98.3%.

Item Type:	Thesis (Sarjana)
Identification Number:	0523080507
Subjects:	600 Technology (Applied sciences) > 639 Hunting, fishing & conservation > 639.3 Culture of cold-blooded vertebrates
Divisions:	Fakultas Perikanan dan Ilmu Kelautan > Budidaya Perairan
Depositing User:	soegeng sugeng
Date Deposited:	14 Dec 2023 07:25
Last Modified:	14 Dec 2023 07:25
URI:	http://repository.ub.ac.id/id/eprint/205221

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