PENGARUH BERBAGAI JENIS PAKAN SEGAR TERHADAP LAJU PERTUMBUHAN DAN KELULUSHIDUPAN KEPITING BAKAU (Scylla serrata) CANGKANG LUNAK DENGAN METODE POPEYE

Abstract

Pemberian berbagai jenis pakan segar terhadap kepiting bakau cangkang lunak diharapkan dapat meningkatkan pertumbuhan kepiting bakau cangkang lunak. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian berbagai jenis pakan segar terhadap pertumbuhan dan kelulushidupan kepiting bakau (Scylla serrata) cangkang lunak, mengetahui jenis pakan segar terbaik serta jenis pakan segar yang dapat mempercepat proses molting. Penelitian dilakukan secara eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 4 kali ulangan. Perlakuan A (ikan petek), B (keong mas), C (usus ayam). Metode popeye diterapkan pada hewan uji. Bobot awal rata-rata 70,83±0,57 g/ekor. Kepiting dipelihara didalam basket berisi satu ekor kepiting. Pengamatan berakhir ketika kepiting mengalami molting. Hasil penelitian menunjukan bahwa pemberian tiga jenis pakan berbeda berpengaruh nyata (P<0,05) terhadap laju pertumbuhan relatif (RGR), efisiensi pemanfaatan pakan (EPP), protein efisiensi rasio (PER). Tetapi tidak berpengaruh nyata (P>0,05) terhadap tingkat kelulushidupan. Hasil pengukuran menunjukan bahwa kepiting yang diberi pakan B (keong mas) menghasilkan nilai paling tinggi yaitu pada nilai RGR sebesar (3.13±0,18%/hari), EPP sebesar (14,26±1,30%), PER sebesar (0.24±0,02%). Perlakuan A (Ikan petek) dan B (keong mas) lebih cepat mengalami molting, secara umum kepiting molting terjadi pada pukul 21.00–00.00 berjumlah berkisar  2 – 8 ekor/hari. Kualitas air masih dalam nilai kelayakan untuk budidaya kepiting bakau cangkang lunak.

Various types of fresh feed to soft shell mud crab is expected to increase a growth of soft shell  crab. The aims of this research was to determine the effect of various types fresh feed to growth and survival of  soft shell crab (Scylla serrata)  to determine the best types of fresh feed, and to determine the best fresh feed to moulting process. The research was done by experimental method used completely randomized design (CRD) with 3 treatments and 4 replications. Treatment A (Leiognathus splendens Cuv), B (snails), C (chicken intestines). Mangrove crab that be used popeye methode was applied in. The early weight is approximately 70.83±0.57g/for each crab. Crabs were cultured in baskets which size of 25 x 16 x 15 cm. The results showed that a giving of various types feed had a significant effect (P<0,05) to relative growth rate (RGR), efficiency of feed utilization (EPP), and protein efficiency ratio (PER), but had no significant effect (P>0,05) to survival rate. The result showed that crab which was given feed B (snail) had the highest value in RGR (3.13±0,18%/day), EPP (14.26±1,30%), and PER (0.24±0,02%). Moulting process a was faster in treatment A. Generaly the moulting time occurred at 21.00-00 o’clock for 2-8 crabs/day. Water quality value was capable for shoft shell mud crab culture.