Digital Library: No conditions. Results ordered -Date Deposited. 2024-03-28T22:13:45ZEPrintshttp://digilib.unila.ac.id/images/sitelogo.pnghttp://digilib.unila.ac.id/2015-09-07T04:10:54Z2015-10-23T04:18:28Zhttp://digilib.unila.ac.id/id/eprint/12719This item is in the repository with the URL: http://digilib.unila.ac.id/id/eprint/127192015-09-07T04:10:54ZPEMANFAATAN Azolla sp. PADA SISTEM RESIRKULASI YANG
BERBEDA DALAM PEMELIHARAAN BENIH IKAN LELE DUMBO
(Clarias gariepinus)Abstrak
Ikan lele dumbo merupakan salah satu jenis ikan air tawar yang sudah
dibudidayakan secara komersial dan berkembang pesat di Indonesia, namun masih
terkendala oleh buruknya kualitas air. Azolla sp. dan sistem resirkulasi merupakan
salah satu teknik yang dicoba diterapkan untuk memperbaiki kualitas air.
Penelitian ini bertujuan untuk mengetahui pengaruh pemberian Azolla sp. pada
sistem resirkulasi yang berbeda terhadap kualitas air, SR, dan pertumbuhan benih
ikan lele dumbo. Rancangan penelitian yang digunakan yaitu dengan
mengkombinasikan antara perlakuan Azolla sp. (dengan Azolla sp. dan tanpa
Azolla sp.) dengan perlakuan sistem resirkulasi (dengan ganti air dan tanpa ganti
air). Kombinasi perlakuan tersebut adalah sebagai berikut : A. sistem resirkulasi
tanpa ganti air dengan Azolla sp., B. sistem resirkulasi dengan ganti air dengan
Azolla sp., C. sistem resirkulasi tanpa ganti air dan tanpa Azolla sp., D. sistem
resirkulasi dengan ganti air dan tanpa Azolla sp. setiap perlakuan diulang tiga kali.
Parameter yang diamati selama penelitian meliputi kualitas air (suhu, DO, pH, dan
NH3), SR, danlaju pertumbuhan harian. Hasil penelitian menunjukkan bahwa
penggunaan Azolla sp. dengan sistem resirkulasi yang berbeda mampu
menurunkan dan menetralkan pH di perairan, serta meningkatkan SR dan laju
pertumbuhan harian. Berdasarkan hasil pengamatan selama penelitian perlakuan
terbaik yaitu perlakuan B (sistem resirkulasi dengan ganti air dan dengan Azolla
sp.) dengan SR 97,8% dan laju pertumbuhan harian sebesar 0,20 gram/hari.
Kata kunci: ikan lele dumbo, Azolla sp., sistem resirkulasi, kualitas air, laju
pertumbuhan harian
Abstract
African catfish is one of freshwater fish that have been cultured commercially in
Indonesia, but is still hampered by poor water quality. Azolla sp. and recirculation
system were techniques that were tested to improve water quality. The aims of
this study were to determine the effect of the Azolla sp. on different recirculation
systems on water quality, SR, and the growth of African catfish. The design used
the combination of treatments between Azolla sp. (with Azolla sp. and without
Azolla sp.) and recirculation system (with water exchange and without water
exchange). Combination of the treatments are: A. recirculation system without
water exchange and with Azolla sp., B. recirculation system with water exchange
and with Azolla sp., C. recirculation system without water exchange and without
Azolla sp. , D. recirculation system with water exchange and without Azolla sp.,
every treatments was replicated three times. Parameters were observed during the
study included water quality (temperature, DO, pH, and NH3), SR and daily
growth rate. The results showed that the use of Azolla sp. on different
recirculation systems can be decreasing and neutralizing pH, increasing SR and
increasing daily growth rate. Based on the observation, treatment B (recirculation
system with water exchange and with Azolla sp.) was the best treatment with
97,8% of SR and a daily growth rate of 0,20 grams / day.
Keyword: African catfish, Azolla sp., recirculation system, water quality, daily
growth ratesMUHAMAD RASYID 0614111048