CD Disertasi

Potensi Tepung Bulu Ayam Terfermentasi Sebagai Sumber Protein Pengganti Tepung Ikan Untuk Pakan Ikan Bawal Bintang (Trachinotus Blochii, Lacepede)

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Feather meals (FM) has potential as a fish diet ingredient because of its high protein (80-85%), the main component being betakeratin, a fibrous and insoluble structural protein extensively cross linked by disulfide bonds. The keratins can not be absorbed directly in the digestive system, therefore a processing technique is required to make it more absorbable. Processing technique can be fermentation by microorganism Bacillus subtilis to degrade keratin by secretion of keratinase. This study aimed to evaluate the suitability of FFM as an alternative to fish meal in the diet of silver pompano, Trachinotus blochii Lacepede. To improve the quality of FM, an experiment was conducted with 5 treatments. The treatments were: fermentation of feather meals: 6, 8, 10, 12 and 14 ml inoculum fermentation using B. subtilis, respectively for chicken feather meal as much as 2 g. The best fermented feather meal is then formulated in the diet and given to silver pompano. Six diets were formulated to contain 40-41% crude protein, with diet P0 without feather meal, diet contains 27% FM (P1), and diet P2, P3 and P4 were 10%, 20%, 30%, and 40% levels of fermented feather meal (FFM) replacement of fish meal in the diet respectively. The juvenile T. blochii (with average in body weight 8.56±0.18 g) were stocked into 0.5 m × 0.5 m × 1 m floating net cages at a density of 20 fish cage-1. The experimental diets was given three times daily at approximately 8.00 AM, 12.00 PM and 5.00 PM to apparent satiation for 63 days. The results showed that the processing fermentation with 10 ml inoculum B. subtilis gives the best results, increased the protein content of chicken feather meals (74.16 to 85.20%), but decreated of lipid content (2.44 to 1.42%) and carbohydrate content (7.86 to 2.05%). The use of FFM in diet was significant difference (P 0.05) in the survival rate of the fish in all the treatments. The implication of this study demonstrated the use of 20% FFM can replace fish meal in the diet of silver pompano with feed digestibility (37.05%), feed efficiency (54.03%), absolute weight (13.77 g) and specific growth of best silver pompano fish (0.90%).

Keywords: feather meal, Bacillus subtilis, keratinase, feed efficiency, growth, silver pompano

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 03. 320 (0003)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Disertasi Ilmu Kelautan., 2020

Deskripsi Fisik

xx, 216 hlm,; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

10 03. 320 (0003)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

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Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

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