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All Journal Jurnal Akuakultur Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology
M. Zairin Jr.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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The Effect of Dietary Vitamin E (-Tocopherol) Level on the Lipid, Essensial Fatty Acid Level and the Hatching Rate of Catfish, Clarias batrachus Linn. Mokoginta, I.; Syahrizal, ,; Jr., M. Zairin
Jurnal Akuakultur Indonesia Vol. 1 No. 2 (2002): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (111.231 KB) | DOI: 10.19027/jai.1.75-80

Abstract

This experiment was conducted to evaluate the dietary level of vitamin E (a-tocopherol) on the lipid, essential fatty acid level and the hatching rate of catfish, Clarias batrachus Linn. Five experimental diets with isoenergy and isonitrogen, but different vitamin E (a-tocopherol) level were used in this experiment. Dietary vitamin E levels are 18, 114, 210, 308 and 416 mg/kg diet respectively.  Fish with body weight of 18,55 a 5,11 g per fish, fed on the experimental diets at satiation, for six months.  The vitamin E, the lipid and the n-6 and n-3 fatty acid level of egg increase as the dietary vitamin E level of broodstock diet increase. However, the ratio of n-6/n-3 fatty acid of egg produced  by treatment 210 mg vitamin E/kg diet was higher than that of other treatments, which finally produced the highest hatching rate of egg (p<0,05).Key words : Vitamin E (a-tocopherol), reproduction, catfish (Clarias batrachus Linn.)
INDUCTION OF SPAWNING IN THE TROPICAL WALKING CATFISH (Clarias batrachus) BY CONTROLLING WATER LEVEL AND TEMPERATURE JR., M. ZAIRIN; FURUKAWA, K.; AiDA, K.
BIOTROPIA No. 16 (2001)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.747 KB) | DOI: 10.11598/btb.2001.0.16.165

Abstract

This experiment was carried out to confirm  the role of water level  and water temperature in inducing the spawning of tropical walking catfish. Mature males and females reared under 23 - 25 °C, were paired and induced to spawn by controlling water level and water temperature. Decreasing water level and returning it to its original level resulted in a low spawning rate (less than 6.7 %) at 23 °C. Decreasing water  level with simultaneous increase in water temperature, followed  by returning the respective levels to their originals gave high spawning rates (41.7 — 50 %); whereas the same treatment but without any water temperature decreased when the water level was returned to the initial level, gave a low spawning rate (16.7 %). Increasing water level only, failed to induce spawning. A high spawning rate was obtained also when changes in water level were carried out under high temperature of 28 °C. No fish spawned in the absence of the environmental stimulation. From the results, it is confirmed that water level and temperature play important roles in inducing spawning of tropical walking catfish. Changes in water temperature probably increase the sensitivity of fish to the change in  water level. Prolonged  exposure to high  water temperature could  also improve the sensitivity of fish. Key words: Walking catfish / spawning / water level / water temperature
EFFECT OF 3, 5, 3'-TRIIODOTHYRONINE (T3) HORMONE ON NUCLEIC ACID AND PROTEIN CONTENT OF THE MUSCLE AND THE GROWTH OF GIANT GOURAMY, OSPHRONEMUS GOURAMY LAC. HANDAYANI, SRI; Jr., M. ZAIRIN; MOK.OGINTA, ING; BINTANG, MARIA
BIOTROPIA No. 24 (2005)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.793 KB) | DOI: 10.11598/btb.2005.0.24.175

Abstract

This experiment was conducted to study the effect of 3, 5, 3'-triiodothyroninc (Tj) hormone on nucleic acid and protein content of the muscle and the growth of giant gouramy, Osphronemus gouramy  Lac. Five experimental diets, which contain isocaloric diets, but different in T3 hormone level were used in this experiment (0.0, 2.5, 5.0, 7.5, and 10.0 mg T3 hormone/kg diet). The experimental diets were tested to three different groups offish for sixty days feeding trial. Fish body weight in groups I, II, and III were 0.39-0.42 g/fish; 19.11 -21.99 g/fish, and 37.52-40.79 g/fish, respectively. The results showed that the highest RNA, DNA concentration and RNA/DNA ratio of the muscle were produced by 10.0 mg T3 hormone/kg diet for group I and II; and 2.5 mg T3 hormone/kg diet for group III. Similar results also were found for the protein content of the whole body, protein retention, and the daily growth rate of the fish. Key words :   Osphronemus gouramy/Ti hormone/nucleic acid/protcin/growth
Co-Authors AiDA, K. FURUKAWA, K. Handayani, Sri I. Mokoginta MARIA BINTANG MOK.OGINTA, ING Syahrizal, ,