Pengaruh Pemberian Kombinasi Pakan Ikan Rucah dan Buatan yang Diperkaya Vitamin E terhadap Pertumbuhan dan Kelulushidupan Kepiting Soka (Scylla Paramamosain)

Abstract

Feed is one of the major operating capital in the cultivation of mangrove crabs. Feed must have an efficient contribution, to reduce costs without reducing the level of production. This study aimed to determine the effect of the combination of the feed to an optimal development of the soft shell crabs cultivation. The study was conducted from August to September 2011 in the Mojo Village, District Ulujami, Pemalang. Test animals used were mangrove crabs with an initial average weight 79,75±13,8 g. Forage testing was fresh grilled fish and an artificial feed enriched with vitamin E dosage 0, 20, 40, and 60 mg/kg feed. This research used experimental methods carried out in the field with a completely randomized design (CRD), with 4 treatments and 3 replications. Treatment A (feed combination with 0 mg vitamin E/kg feed), treatment B (feed in combination with 20 mg vitamin E/kg feed, Treatmen C (feed in combination with 40 mg vitamin E/kg feed, and treatmen D (feed in combination with 60 mg of vitamin E/kg of feed). The variables that measured was a Specific Growth Rate (SGR), Feed Utilization (TKP, FCR, PER, NPU), SR, and water quality. The results showed that combination of the fresh grilled fish feed and an artificial (hand made) feed enriched with Vitamin E significantly influence PER (P <0,05), but there was not significantly influence TKP, FCR, NPU and SR of the soft shell crabs (P > 0,05). Feed in combination with 20 mg/kg feed (treatment B) gives the best effect on FCR (1,48±0,17) and PER (1,57±0,17 %), on the soft shell crab