Judul: Penggunaan Destillers Dried Grain with Solubles (DDGS) Jagung sebagai Sumber Protein Nabati Pakan Benih Ikan Gurame Osphronemus gouramy Lac.
Abstrak: This experiment was conducted to examine the effect of the use of DDGS as a source of vegetable protein on the growth of the giant gouramy O. gouramy Lac. juvenile. Feed is devided into two, the feed for testing of digestibility and testing of growth. The feed for testing of digestibility are References Diet (100% control of feed) and Test Diet (70% of control feed and 30% of DDGS), while the feed for testing of growth are 0%, 10%, 20%, and 30% DDGS. The fish were feed the experimental diet at satiation. Giant gouramy be used in this research have weight 4.72±0.78 g. Culture of fish conducted during 40 days in the aquarium sized 50x40x35 cm. Test of growth from DDGS up to 30% showed no significant difference (P>0.05) in daily growth rate (2.82 to 2.91%), survival rate (100%), feed consumptions (139.07-159.22 g), and feed efficiency (64.52-71.05%). Whereas, protein retention (16.29 to 25.02%), lipid retention (31.36 to 53.52%) are significantly different with control. It is conclude that the use of DDGS as the source of vegetable protein with various consentration on the feed of giant gouramy until 30% didn’t affect the daily growth rate, survival rate, and feed consumptions. The highest feed efficiency of DDGS treatment is 20%.
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Judul: Pertumbuhan dan kelangsungan hidup benih Ikan Gurame yang diberi protein rekombinan GH melalui perendaman dengan dosis berbeda
Abstrak: This research was conducted to determine the dose of rGH giant gouramy (r- OgGH) given through immersion that generate the highest growth of gouramy juvenile. The dose of rGH used was 10 mg / l, 20 mg / l, and 30 mg / l and without administration of rGH as a control. Fifty fries of 2 days after the yolk egg absorbtion were immersed into 200 ml of rGH solution for 60 min. Immersion was performed 3 times and applied once a week. The fish were reared in aquaria at stocking densities of 7 fish/l for 5 weeks and fed on Artemia nauplii and blood worm 2 times a day ad libitum. The results showed that the average body weight of 30 mg/l (0.3394 g) and 20 mg/l (0.3179 g) rGH-treated fish were higher (P<0.05) compared to that of 10 mg/l (0.2423 g) and control (0.1939 g). There was no body weight differences (P>0.05) between the fish treated with 20 mg/l and 30 mg/l of rGH, and between the fish treated with 10 mg/l rGH and control. Furthermore, the growth rate of rGH-treated fish was higher (P<0.05) compared with control. Survival of fry treated with rGH 30 mg/l (100%) was higher than the control and other treatments. Thus, immersion of fry in 30 mg/l rGH solution can be applied to enhance the growth of giant gouramy with a high survival rate.
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Judul: Kajian Teoritis Nilai Eigen Matriks Toeplitz Simetrik Real dan Definit Positif.
Abstrak: Matriks Toeplitz adalah matriks berukuran 𝑛×𝑛 yang memiliki entri-entri yang sama pada diagonal yang sama. Pada karya ilmiah ini akan dilakukan pengkajian secara teoritis nilai eigen genap dan ganjil dari matriks Toeplitz simetrik real dan definit positif. Penghitungan nilai eigen didasarkan pada faktorisasi polinomial karakteristik menjadi polinomial karakteristik genap dan ganjil.
Keyword: matriks Toeplitz, polinomial karakteristik, nilai eigen, nilai eigen genap, nilai eigen ganjil