AISYAH, ILMI (2023) EFISIENSI PEMANFAATAN PAKAN DAN PERTUMBUHAN NILA SALIN (Oreochromis niloticus) STADIA PEMBESARAN YANG DIBERI PAKAN BUATAN DENGAN PENAMBAHAN ENZIM FITASE (23da196). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Ilmi Aisyah. 26020119130046. Efisiensi Pemanfaatan Pakan dan
Pertumbuhan Nila Salin (Oreochromis niloticus) Stadia Pembesaran yang Diberi Pakan Buatan dengan Penambahan Enzim Fitase. Diana Rachmawati & Dewi Nurhayati).

Ikan nila salin (Oreochromis niloticus) termasuk jenis ikan omnivora yang telah mengalami proses adaptasi dari salinitas 0 ppt menjadi 20 ppt. Pemberian pakan yang sesuai kebutuhan nutrisi akan meningkatkan produksi ikan nla salin. Pakan buatan menggunakan bahan baku lokal sebagai sumber protein hewani dan nabati. Namun bahan baku nabati mengandung zat anti nutrisi berupa asam fitat yang menyebabkan kualitas pakan menurun. Penambahan enzim fitase dalam pakan dapat menghidrolisis asam fitat, sehingga protein dan mineral dapat diserap oleh tubuh ikan secara maksimal. Tujuan penelitian ini adalah mengkaji pengaruh penambahan enzim fitase dan menentukan dosis optimum enzim fitase dalam pakan buatan terhadap efisiensi pemanfaatan pakan dan pertumbuhan ikan nila salin stadia pembesaran. Ikan uji yang digunakan adalah ikan nila salin sebanyak 180 ekor dengan bobot rata-rata 16,36±0,22 g/ekor dan dipelihara selama 56 hari. Penelitian ini menggunakan metode eksperimen dengan rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan yang diberikan adalah perlakuan A (0 mg/kg pakan), B (125 mg/kg pakan), C (250 mg/kg pakan) dan D (375 mg/kg pakan). Hasil penelitian menunjukkan bahwa penambahan enzim fitase dalam pakan buatan berpengaruh nyata (P<0,05) terhadap efisiensi pemanfaatan pakan (EPP), rasio efisiensi protein (PER), rasio konversi pakan (FCR), laju pertumbuhan relatif (RGR), namun tidak berpengaruh nyata terhadap kelulushidupan (SR). Dosis
optimum penambahan enzim fitase pada pakan buatan ikan nila salin stadia pembesaran berkisar 218,75 – 355 mg/kg pakan mampu menghasilkan EPP 63,04% dan RGR 4,86%/hari.

Kata kunci: Efisiensi, Fitase, Nila Salin, Pakan, Pertumbuhan

ABSTRACT
(Ilmi Aisyah. 26020119130046. Efficiency of Feed Utilization dan Growth of Salin Tilapia (Oreochromis niloticus) Enlargement Stadia Given Artificial Feed with the Addition of Phytase Enzymes. Diana Rachmawati & Dewi Nurhayati).

Saline tilapia (Oreochromis niloticus) is a type of omnivorous fish that has undergone an adaptation process from 0 ppt to 20 ppt salinity. Feeding according to nutritional needs will increase the production of saline nila fish. Artificial feed uses local raw materials as a source of animal and vegetable protein. However,
vegetable raw materials contain anti-nutritional substances in the form of phytic acid which causes the quality of feed to decrease. The addition of phytase enzymes in feed can hydrolyze phytic acid, so that protein and minerals can be absorbed by the fish's body to the fullest. The purpose of this study was to examine the effect of adding phytase enzymes and determining the optimum dose of phytase enzymes in artificial feed on the efficiency of feed use and growth of saline tilapia rearing stage. The test fish used were 180 saline tilapia with an average weight of 16.36±0.22 g/fish and reared for 56 days. This study used an experimental method with a completely randomized design (CRD) with 4 treatments and 3 replications. The treatments given were A (0 mg/kg feed), B (125 mg/kg feed), C (250 mg/kg feed) and D (375 mg/kg feed). The results showed that the addition of phytase enzymes in artificial feed had a significant (P<0.05) effect on feed utilization efficiency
(EPP), protein efficiency ratio (PER), feed conversion ratio (FCR), relative growth rate (RGR), but not significant effect on survival (SR). The optimum dose of the addition of phytase enzymes to artificial feed for saline tilapia in the rearing stage ranges from 218,75 – 355 mg/kg of feed capable of producing EPP 63.04% and
RGR 4.86% /day.

Keywords: Efficiency, Feed, Growth, Phytase, Tilapia

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