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Replacement
of Rice Bran with Pleurotus florida Stalks on Growth Performance
of Oreochromis
niloticus Fingerlings
(Penggantian Dedak Padi dengan Batang Cendawan dalam Prestasi
Tumbesaran Anak Ikan Tilapia)
HASNIYATI MUIN1 2, NURUL
NADWA
ABDUL
FATAH1, IZZAT
HAMDI
BAHARI1& SHAHARUDIN
ABDUL
RAZAK1 2* 1AquaNutriBiotech Laboratory, Biological Sciences, Faculty of
Science, University of Malaya 50603 Kuala Lumpur, Malaysia
2Pusat Penyelidikan Bioteknologi Glami Lemi, Glami Lemi, Titi, 71650 Jelebu,
Negeri Sembilan, Malaysia
Diserahkan: 11 Mei 2012/Diterima: 23 Ogos 2013
ABSTRACT
A 6-weeks feeding experiment was conducted to evaluate the effect
of replacement of rice bran with mushroom stalk (Pleurotus florida), an agriculture waste, on growth performance in tilapia
fingerlings (Oreochromis niloticus). Three isonitrogenous (32%
crude protein) diets were formulated. Rice bran was replaced with 100% (Diet
1), 50% (Diet 2) and 0% (Diet 3, control) mushroom stalk. Each dietary
treatment was tested in triplicate group of 12 fingerlings per tank arranged in
completely randomized design. The result of this study showed that there was no
significant difference (p>0.05) among all diets in terms of growth
performance and feed utilization. Diet 1 gave the best results in BWG, SGR, FCR and PER.
An economic evaluation indicated that Diet 1 gave the lowest production cost at RM 2.03/kg
followed by Diet 2 (RM2.18/kg) and Diet 3 (RM2.38/kg). Taking all
the factors into consideration, the best diet was Diet 1 with 100% replacement
of rice bran with mushroom stalks which is also the cheapest diet. This shows
that Pleurotus florida stalks can replace 100% of rice bran in practical
tilapia diets.
Keywords: Carbohydrate; feed utilization; growth performances; Oreochromis niloticus; Pleurotus
florida
ABSTRAK
Suatu kajian tentang diet pemakanan selama 6 minggu telah
dijalankan untuk menilai kesan potensi penggantian dedak padi dengan batang
cendawan (Pleurotus florida) yang merupakan bahan buangan pertanian dalam prestasi tumbesaran
anak ikan tilapia (Oreochromis niloticus). Tiga diet mengandungi
kira-kira 32% protein diformulasikan. Dedak padi diganti dengan 100% (Diet 1),
50% (Diet 2) dan 0% (Diet 3, kawalan) batang cendawan. Setiap ujian dilakukan
sebanyak 3 kali dengan setiap satu mengandungi 12 ekor ikan diatur secara
rawak. Hasil kajian menunjukkan bahawa tiada perbezaan yang signifikan (p>0.05)
bagi semua diet daripada segi aspek prestasi tumbesaran dan juga penggunaan
nutrisi makanan. Diet 1 menunjukkan kadar tumbesaran yang baik bagi BWG, SGR, FCR dan PER.
Anggaran kos menunjukkan Diet 1 menghasilkan kos yang paling rendah iaitu RM 2.03/kg
diikuti oleh Diet 2 (RM2.18/kg) dan Diet 3 (RM2.38/kg). Berdasarkan
faktor ini, diet yang terbaik adalah Diet 1 yang menggantikan 100% dedak padi
dengan batang cendawan dan ia juga merupakan diet yang paling murah. Ini
menunjukkan bahawa batang cendawan (Pleurotus
florida) boleh menggantikan 100%
dedak padi dalam diet praktikal tilapia.
Kata kunci: Karbohidrat; Oreochromis niloticus; penggunaan nutrisi makanan; Pleurotus
florida; prestasi tumbesaran
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*Pengarang untuk surat-menyurat; email: shahdin@um.edu.my
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