Kinerja Usaha Pendederan Kerapu Cantik Epinephelus fuscoguttatus-microdon di KJA dengan Perbedaan Frekuensi Pemberian Pakan

Abstract

Pakan merupakan aspek penting dalam usaha budidaya dikarenakan selain menghabiskan 60-70% biaya operasional, juga mempengaruhi kinerja usaha pendederan ikan kerapu. Manajemen pemberian pakan yang optimal dapat meningkatkan kinerja usaha pendederan ikan kerapu. Penelitian ini bertujuan mengevaluasi frekuensi pemberian pakan formula secara at satiation pada pendederan ikan kerapu cantik dalam keramba jaring apung, terhadap kinerja produksi dan keuntungan usaha. Terdapat tiga perlakuan yaitu pemberian frekuensi pakan dua kali sehari (A), pemberian frekuensi pakan tiga kali sehari (B), dan pemberian frekuensi pakan empat kali sehari (C). Benih ikan kerapu cantik berukuran 8-9 cm dipelihara dalam KJA berukuran 1 m x 1 m x 1,5 m dengan padat tebar 50 ekor/m3. Ikan dipelihara selama 40 hari dengan metode pemberian pakan at satiation. Hasil penelitian ini menunjukkan bahwa perlakuan B memberikan kinerja produksi terbaik seperti tingkat kelangsungan hidup 98,67%; pertumbuhan panjang 4,86; rasio konversi pakan 1,29; laju pertumbuhan panjang spesifik sebesar 1,10±0,03 %/hari; dan laju pertumbuhan panjang mutlak sebesar 0,12±0,003 cm/hari sehingga menghasilkan kinerja usaha terbaik dengan keuntungan sebesar Rp. 272.616.856 per tahun.

Feed is an important aspect in the cultivation business because in addition to spending 60-70% of operational costs, it also affects the performance of grouper fish nursery business. An optimal feeding management can improve the performance of grouper fish nursery. This study aimed to evaluate feeding frequencies commercial food with at satiation method in floating net cage to production performance and business profit. There were three treatments used, those were feeding frequency twice a day, feeding frequency three times a day, and feeding frequency four times a day. Cantik grouper fish seeds measuring 8-9 cm were preserved in sea FNC measuring 1 m x 1 m x 1.5 m with a density of 50 fish/m3. Fishes were maintained for 40 days by the method of feeding at satiation. The results of this study showed that treatment B provided the best production performance such as a survival rate of 98.67%; long growth of 4.86 cm; feed conversion ratio 1.29; specific long growth rate of 1.10±0.03 %/day; and the absolute long growth rate of 0.12±0.003 cm/day so that produced the best business performance with a profit Rp. 272,616,856 per year.