Dedi Jusadi

Quality improvement of rubber seed meal diet for Nile tilapia with amino acid supplemetation

This experiment was conducted to improve the quality of rubber seed meal fermented using sheep rumen liquor based diet (RSMF) with amino acid supplementation for Nile tilapia Oreochromis niloticus. This experiment consisted of five treatments with three replications. The treatments were 0% protein from RSMF as control; 50% RSMF; 50% RSMF with lysine; 75% RSMF and 75% RSMF with lysine. Tilapia with an initial body weight of 6.29±0.12 g were reared for 40 days and the fish were fed three times daily at satiation level (8.00 am, 12.00 pm and 16.00 pm). The data were statistically analysed by using one-way analysis of variance (ANOVA) using software SPSS version 16.0 at 95% (p<0.05) confidence interval and Tukey test for the post hoc test. The results showed that the addition of lysine in the 75% RSMF diets could increased final weight, but did not significantly different to protein efficiency ratio (PER), decreased feed convertion ratio (FCR) and biochemical body composition. The data indicated that quality of 75% RSMF could improved after lysine supplementation, but still lower than using 50% RSMF and soybean meal as protein source.

The growth and physiological responses of tambaqui Colossoma macropomum fed on the high dose of clove oil-supplemented diet

ABSTRACT In this study, tambaqui Colossoma macropomum juvenile were given feed supplemented with clove oil Syzygium aromaticum at a dose of 0 and 100 mg/100 g diet. This study purposed to assessment the effect of clove oil supplementation at high dose (100 mg/100 g diet) on growth performance and health status of freshwater tambaqui. As many as 25 fishes with initial body weight 7.62±0.44 g maintained in 15 aquariums for 45 days. Each treatment consisted of three replications. Data were analyzed by t-test. The results showed that tambaqui growth performance on both treatments were not significantly different. However, supplementation of high doses 100 mg clove oil/100 g diet showed reduce on the blood parameters and declining the abundant of intestinal microflora in tambaqui gut, but the types seen more diverse. The observation of fish liver histology showed that hepatocyte cells in the treatment of 100 mg clove oil become smaller and dense compared with 0 mg clove oil treatment. The use of high doses of clove oil does not interfere with the tambaqui growth performance despite the downturn in the physiological responses were observed. Keywords: clove oil, Syzygium aromaticum , Colossoma macropomum , growth performance ABSTRAK Di dalam penelitian ini, benih ikan bawal tawar Colossoma macropomum dipelihara dengan pemberian pakan yang ditambah minyak cengkeh Syzygium aromaticum pada kadar 0 dan 100 mg/100 g pakan. Tujuannya untuk melihat pengaruh penambahan minyak cengkeh di dalam pakan pada dosis tinggi (100 mg/100 g pakan) terhadap performa pertumbuhan dan respons fisiologis ikan bawal. Sebanyak 25 ekor ikan bawal dengan bobot individu awal 7,62 ± 0,44 g dipelihara pada 15 akuarium selama 45 hari. Data yang diperoleh dianalisis dengan uji komparasi t-test antar dua perlakuan dengan tiga ulangan. Hasil penelitian menunjukkan bahwa tidak ada pengaruh dari kedua perlakuan terhadap parameter pertumbuhan. Namun, pemberian pakan yang mengandung minyak cengkeh dosis tinggi 100 mg/100 g pakan mempengaruhi respons fisiologis berupa rendahnya kisaran nilai gambaran darah serta menurunnya jumlah mikroflora di usus ikan bawal, meski jenisnya lebih beragam. Hasil pengamatan histologi hati ikan pada perlakuan 100 mg minyak cengkeh menunjukkan bahwa sel hepatosit berukuran lebih kecil dan terlihat rapat dibandingkan dengan perlakuan 0 mg minyak cengkeh. Penggunaan minyak cengkeh dosis tinggi tidak menganggu performa pertumbuhan ikan bawal meskipun terjadi penurunan pada respons fisiologis yang diamati. Kata penting: minyak cengkeh, Syzygium aromaticum , Colossoma macropomum , performa pertumbuhan

Evaluation of growth and meat performance of Pangasianodon hypopthalmus which fed with Cinnamomum burmanni leaves enriched diet

This research was performed to evaluate growth performance and meat quality at different feeding period of striped catfish Pangasianodon hypopthalmus fed on cinnamon leaves Cinnamomum burmanni enriched diet. Twenty fishes at the average body weight of 21.24±2.39 g were distributed into 100×40×50 cm 3 of aquarium. Fish were fed on the diet contained C. burmanni leaves of either 0.0%, 0.5%, 1.0%, or 1.5% respectively for 60 days. Fish were fed on those diets three times a day at satiation. Fish meat quality was evaluated by organoleptic test and proximate analysis at day-20, 40, and 60. The result showed that until day-40, fish fed on the diet contained 0.0%, 0.5%, and 1.0% cinnamon leaves had no significant difference on growth, hence still showed higher growth than fish fed at the dose of 1,5%. Meanwhile at day-60, fish fed on the diets contained either 0.5%, 1.0%, and 1.5% cinnamon leaves significantly had lower growth than that fed on 0.0% cinnamon leaves. In accordance to the growth response, diet contained 0.5% cinnamon leaves given for 40 days has shown the best texture and the highest protein content of fish meat.

Feeding for larvae of catfish Pangasionodon sp. larvae in different ages

ABSTRACT Sludge worm ( Tubifex sp.) as natural feed on catfish ( Pangasionodon sp.) larvae rearing is available in limited amount especially during rainy season. It becomes a constraint factor for larvae rearing sector. This research was conducted to evaluate the appropriate initial age of catfish larvae to get artificial feed as sludge worm replacement. Evaluation was conducted on the growth and survival of catfish larvae in 14 days of culture. There were four treatments of feeding in triplicates i.e. larvae were given natural feed without artificial feed, given artificial feed started from d3, d6, and d9) with three replications. The results showed that larvae fed on artificial feed on d3 had the lowest growth compared to the other treatments, whereas the survival was not significantly different (P>0.05) among the treatments. As a conclusion, artificial feed could be used to replace natural feed for catfish larvae started at the age of nine days. Keywords: sludge worm, catfish larvae, artificial feed ABSTRAK Cacing sutra ( Tubifex sp.) tersedia dalam jumlah terbatas terutama pada musim penghujan sebagai pakan alami dalam usaha pembenihan ikan patin ( Pangasionodon sp.). Ini menjadi kendala dalam usaha pembenihan. Penelitian ini dilakukan untuk mengevaluasi umur larva ikan patin yang tepat untuk mulai diberi pakan buatan menggantikan cacing sutra. Evaluasi dilakukan pada pertumbuhan dan kelangsungan hidup larva ikan patin umur 14 hari. Selama pemeliharaan, larva diberi pakan dengan empat perlakuan; pemberian pakan alami tanpa pakan buatan, pemberian pakan buatan mulai d3, d6, dan d9 dengan tiga ulangan untuk masing-masing perlakuan. Hasil penelitian menunjukkan bahwa perlakuan pemberian pakan buatan mulai d3 memiliki pertumbuhan panjang yang terkecil dibandingkan perlakuan lain, sedangkan tingkat kelangsungan hidup larva tidak berbeda nyata (P>0,05) antarperlakuan. Berdasarkan hasil penelitian, dapat disimpulkan bahwa pakan buatan dapat digunakan sebagai pengganti pakan alami mulai larva ikan patin umur sembilan hari. Kata kunci: cacing sutra, larva ikan patin, pakan buatan