%0 Generic
%A NASYIR HUSAIN, 0854111004
%C UNIVERSITAS LAMPUNG
%D 2014
%F eprints:3673
%I Fakultas Pertanian
%T ANALYSIS OF DIFFERENT C:N RATIO ON RED TILAPIA  (Oreochromis niloticus) GROWTH IN BIOFLOC SYSTEM    ANALISIS RASIO C:N BERBEDA PADA SISTEM BIOFLOK  TERHADAP PERTUMBUHAN IKAN NILA MERAH  (Oreochromis niloticus)
%U http://digilib.unila.ac.id/3673/
%X The development of tilapia farming processes affect the increase in waste  waters. Biofloc technology is an alternative to overcome the problem of water  quality in aquaculture and utilized as an additional food source for tilapia. This  study was conducted to analyze the growth and the survival rate of red tilapia in  biofloc system with different C:N ratio. The design of the research was a  completely randomized design (CRD) with four treatments and three replications.  The treatments were tested, namely (A) control, (B) C:N ratio of 15, (C) C:N ratio  of 20, and (D) C:N ratio of 25. Study was done using red tilapia fingerlings 3 cm  with an average weight 2 ± 0.4 g were kept in an aquarium measuring 40x30x35  cm3. Key measurements include absolute growth, specific growth rate, survival,  Feed Conversion Ratio (FCR), Protein Efficiency Ratio (PER), and water quality.  The range of tilapia specific growth rate was 12,17% - 16,33% and the range of  survival rate of tilapia was 53,33% -80%. The best treatment was treatment of B  (C:N ratio of 15).  Keywords : Tilapia, biofloc, ratio C:N, the growth and the survival rate.    Berkembangnya proses budidaya ikan nila berpengaruh terhadap  peningkatan limbah diperairan. Tekhnologi bioflok merupakan salah satu  alternatif dalam mengatasi masalah kualitas air di akuakultur dan dimanfaatkan  sebagai sumber pakan tambahan untuk ikan nila. Tujuan penelitian ini adalah  untuk menganalisis pertumbuhan dan tingkat kelangsungan hidup ikan nila merah  pada sistem bioflok dengan rasio C:N yang berbeda. Rancangan penelitian yang  digunakan adalah rancangan acak lengkap (RAL) dengan empat perlakuan dan  tiga kali ulangan. Perlakuan yang diuji yaitu (A) kontrol, (B) rasio C:N 15, (C)  rasio C:N 20, (D) rasio C:N 25. Penelitian dilakukan menggunakan benih ikan  nila merah 3 cm dengan bobot rata-rata 2 ± 0,4 gram yang dipelihara di akuarium  berukuran 40x30x35 cm3. Parameter penelitian meliputi pertumbuhan mutlak, laju  pertumbuhan spesifik, kelangsungan hidup, Feed Convertion Ratio (FCR),  Protein Efficiency Ratio (PER), dan kualitas air. Kisaran laju pertumbuhan  spesifik ikan nila 12,17%-16,33% dan tingkat kelangsungan hidup ikan nila  53,33%-80%. Perlakuan terbaik adalah perlakuan B (rasio C:N 15).  Kata kunci : Ikan nila, bioflok, rasio C:N, pertumbuhan dan kelangsungan hidup.