Journal of Aquaculture Management and Technology (2014) 3 (3) : 35-42

PENGARUH PADAT TEBAR BERBEDA TERHADAP PERTUMBUHAN DANA�KELULUSHIDUPAN BENIH LELE (Clarias gariepinus) DALAM MEDIA BIOFLOK
The Effect of Different Stocking Densities Toward Growth and Survival Rate of Catfish SeedA�(Clarias Gariepinus) in Biofloc Media

Teguh Eko Suryo Agil Hermawan, Agung Sudaryono*, Slamet Budi Prayitno

Program Studi Budidaya Perairan, Jurusan Perikanan
Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro
Jl. Prof Soedarto, SH, Tembalang, Semarang, Jawa Tengah a�� 50275, Telp/Fax.+62247474698

ABSTRAK

Intensifikasi budidaya membawa dampak yang kurang baik terhadap kelestarian dan kesehatanA�lingkungan yang berupa penurunan kualitas lingkungan. Penelitian ini bertujuan untuk mengetahui pengaruhA�padat tebar berbeda terhadap produktifitas, pertumbuhan, rasio konversi pakan (FCR) dan kelulushidupan benihA�lele (C. gariepinus) dalam media bioflok. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 3A�perlakuan dan 3 ulangan. Perlakuan yang diujikan adalah padat tebar berbeda dalam media bioflok A (1500/m3),A�B (1000/m3), dan C (500/m3). Hewan uji menggunakan benih lele (Clarias gariepinus) dengan bobot rata-rataA�individu sebesar 1,24A�0,1 g. Benih lele dipelihara dalam kolam terpal berdiameter 100 cm dengan volume airA�A�800 L selama 42 hari dan pemberian pakan 4% dari berat biomassa. Hasil penelitian menunjukkan bahwa padatA�tebar berbeda dalam media bioflok berpengaruh nyata (P<0,05) terhadap pertumbuhan, produktifitas danA�efisiensi pakan namun tidak berbeda nyata terhadap kelulushidupan benih lele. Laju pertumbuhan spesifik yangA�dicapai pada perlakuan A, B, dan C berturut-turut adalah 3.508A�0.011; 3.554A�0.031; dan 3.868A�0.014 %/hari.A�Produktifitas lele pada perlakuan A, B dan C berturut-turut adalah 6405.967A�39.4; 4380.389A�72.4; danA�2588.656A�19.2 (g/m2). Rasio konversi pakan yang dicapai berturut-turut adalah 0.939A�0.011; 0.926A�0.014; danA�0.841A�0.008. Nilai kelulushidupan lele berkisar antara 91.389-91.833%. Perbedaan padat penebaran tidakA�memberikan pengaruh nyata terhadap kelulushidupan, namun memberi pengaruh nyata terhadap produktifitas,A�laju pertumbuhan spesifik dan rasio konversi pakan.

Kata kunci : Bioflok; Lele dumbo; Padat tebar; Clarias gariepinus; C/N rasio

ABSTRACT

The intensification of farming has unfavorable impact on the sustainability and environmental health inA�the form of environmental quality degradation. This study aims to determine the effect of different stockingA�densities on growth, productivity, Food Conversion Ratio (FCR) and survival rate of catfish seeds (C.A�gariepinus) in bioflok technology. This study used a completely random design with 3 treatments and 3A�replications. The treatments tested were different stocking densities in bioflok technology which are A (1500/m3),A�B (1000/m3), and C (500/m3). Animal trials using catfish seed (C. gariepinus) with an average individual weightA�of 1.24A�0.1 g. Catfish seeds reared in ponds diameter of 100 cm with a volume of 800 L of water for 42 days andA�feeding 4% of the weight of biomass. The result of the study showed that different stocking densities in bioflocA�technology have a significant effect (P<0.05) on productivity, growth and Food Conversion Ratio but did notA�significantly affect the survival rate of catfish seed. Specific growth rate achieved in treatment A, B, and C,A�were, 3,508A�0.011; 3,554A�0.031, and 3,868A�0.014 %/day. Productivity catfish on treatment A, B and C,A�respectively, 6405.967A�39.4; 4380,389A�72.4, and 2588,656A�19.2 (g/m2), respectively food conversion ratio ofA�treatment A, B, and C were 0.939A�0.011; 0.926A�0.014, and 0.841A�0.008. Catfish survival values rangedA�between 91.389-91.833%. The different densities had no significant effect on survival rate, but had a significantA�effects on productivity, specific growth rate, and food conversion ratio.

Keywords: Bioflok, African catfish, Stocking density, Clarias gariepinus, C/N ratio
*) Corresponding author : agungsoed@yahoo.co.id

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