Pengaruh Suhu Air terhadap Pertumbuhan Benih Nila Merah (Oreochromis sp.) Nilasa

CHRISTOPHER YULIAN Y, Susilo Budi Priyono, S.Pi., M.Si.; Dr.Ir. Bambang Triyatmo, M.P.

2015 | Skripsi | S1 BUDIDAYA PERIKANAN

Penelitian ini bertujuan untuk mengetahui pengaruh suhu air terhadap pertumbuhan Nila Merah Nilasa, serta mengetahui suhu air optimum pada pertumbuhan Nila Merah Nilasa. Penelitian ini dilakukan dengan menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 4 perlakuan suhu air (26, 28, 30, 32 oC) dan masing-masing perlakuan terdiri dari 3 ulangan. Benih Nila Merah Nilasa umur 50 hari ukuran 6-9 cm dipelihara pada akuarium ukuran 0,6x0,4x0,5 m3dengan padat tebar 16 ekor/akuarium selama pemeliharaan 60 hari. Pengelolaan kualitas air yang dilakukan selama penelitian meliputi penggantian dan penyiponan air sebanyak 10% sehari sekali, serta pengecekan suhu air yang dilakukan setiap hari. Data dianalisis secara statistik menggunakan analisis keragaman (Analysis of Varians) dengan tingkat kepercayaan 95%. Hasil penelitian menunjukkan bahwa suhu air yang berbeda 26, 28, 30 dan 32 oC tidak berpengaruh nyata terhadap laju pertumbuhan (panjang mutlak, berat mutlak, panjang spesifik, berat spesifik), laju sintasan dan nilai konversi pakan benih Nila Merah Nilasa. Nila Merah Nilasa selama pemeliharaan pada suhu 26-32 oC mempunyai nilai pertumbuhan panjang mutlak berkisar 3,97-4,30 cm, pertumbuhan berat mutlak berkisar 18,11-21,50 g, laju pertumbuhan spesifik panjang berkisar 0,74-0,79 %/hari, laju pertumbuhan spesifik berat berkisar 2,38-2,52 %/hari, laju sintasan berkisar 83,33-93,75 % dan rasio konversi pakan berkisar 1,21-1,37.

This study aimed to determine the effect of water temperature on the growth of Red Tilapia Nilasa and to know the optimum water temperature on the growth of the Red Tilapia Nilasa. This research was conducted by using a completely randomized design (CRD), which consists of 4 water temperature treatments (26, 28, 30, 32 °C) and each treatment consisted of three replications. Red Tilapia Nilasa seed which have age of 50 days the size of 6-9 cm kept in aquarium size 0,6x0,4x0,5 m3 with a stocking density 16 fish / aquarium maintenance for 60 days. Water quality management is done during the study include the replacement of water and as much as 10% of siphon once a day, as well as checking the water temperature is done every day. Data were statistically analyzed using analysis of variance (Analysis of Variance) with 95% confidence level. The results showed that different water temperatures 26, 28, 30 and 32 ° C did not significantly affect growth rate (absolute length, the absolute weight, specific length, specific weight), survival rate and feed conversion ratio of Red Tilapia Nilasa. Red Tilapia Nilasa during maintenance at a temperature of 26-32 °C has an absolute value of a long growth ranged from 3.97 to 4.30 cm, growth ranged from 18.11 to 21.50 g of absolute weight, specific growth rate of long-range from 0.74 to 0.79% / day, the specific growth rate of weight-ranged from 2.38 to 2.52% / day, the rate ranged from 83.33 to 93.75% survival rate and feed conversion ratio ranged from 1.21 to 1.37.

Kata Kunci : laju sintasan, nila merah nilasa, pertumbuhan, suhu