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INDONESIA
Jurnal Perikanan Universitas Gadjah Mada
Published by Universitas Gadjah Mada
ISSN : 08536384     EISSN : 25025066     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Perikanan Universitas Gadjah Mada are published to promote a critical review of the various investigative issues of interest in the field of fisheries between the researchers, academics, students and the general public, as a medium for communication, dissemination, and utilization of wider scientific activities.
Arjuna Subject : -
Articles 13 Documents
 1   2 
Search results for , issue "Vol 26, No 1 (2024)" : 13 Documents clear
The Fermented Cassava (Manihot esculenta C.) Flour and Bioimun as Additional Feed for the Juvenile Catfish (Clarias gariepinus) to Improve Growth, Immunity, and Survival Asih, Supadmi; Hardi, Esti Handayani; Fitriyana, Fitriyana
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.91538

Abstract

The availability of fish feed has remained an obstacle in the fish cultivation until now. The dependence on fish flour, soy flour, the imported cornstarch has not been solved, though the natural resource in Indonesia supports the dependence of this raw material availability. This research was conducted by testing the use of the fermented cassava flour to substitute cornstarch as the catfish feed, by adding natural drug product, BIOIMUNÒ, which positively affected growth, immunity, and production. Research methodology used was the Completely Randomized Design with six treatments and three repetitions. Fishes with average weight of 10 g and length of 10 cm were raised in the aquarium with dimension of 60x40x40 cm, with the density of 10 fishes per aquarium. The research was conducted for 60 days with observation every 14 days. Compositions of cornstarch and cassava flour were P1 (0/200), P2 (100/100), P3 (75/125), P4 (50/150), P5 (25/175), and P6 (commercial feed), added with BIOIMUNÒ at 20 ml/kg from the extracts of Solanum ferox and Zingiber zerumbet. Feed was given three times at a percentage of 5%. This research showed the result that the best growth was in treatment (P3), with 75 g of cornstarch and 125 g of cassava flour (75/125). The highest absolute weight gain was in P3 at 132.67 ± 8.33 g. The immunity system testing was in accordance with the result of phytochemical test of positive alkaloid, negative flavonoid, and negative steroid. Survival Rate (SR) based on the variance analysis (ANOVA) had an insignificant effect (P>0.05) 93.00-100.00%. P3 feed conversion rate was 5.35±0.23. Hematocrit level and total erythrocyte with a decent score and total leukocyte increased from P6. Feed proximate test was in accordance with the standard. Total bacteria were in the normal range, the contamination test on heavy metal proved no harm against the catfishes, and the water quality was normal. In terms of economic analysis, P1-P5 were more affordable than (P6), so that it can be concluded that the fermented cassava flour can be used as a replacement of corn by adding BIOIMUNÒ as the catfish feed.
The Effect of Gracilaria Liquid Organic Fertilizer Fermented with Different Starters on the Growth of Pakcoy Dewi, Eko Nurcahya; Tsaniya, Aulia Rahmawati; Purnamayati, Lukita
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.93277

Abstract

This research aimed to determine the effect of adding three different starters, such as Lactobacillus plantarum, Azospirillum sp., and Trichoderma sp., on gracilaria seaweed for bok choy growth. The starter optimized fermentation and improved fertilizer quality in growing bok choy. The seaweed was reduced in size, soaked in 1% phosphoric acid solution, then homogenized and heated with 3% molasses to provide microbial nutrition and 1% KOH to maximize mineral content. Fermentation was carried out for 14 days in the microbial exponential phase for decomposition. The results showed that the addition of L. plantarum and Trichoderma sp. to gracilaria seaweed liquid fertilizer produces the highest values of gibberellin (147 ppm), auxin (140 ppm), and cytokinin (96 ppm). Next, the fertilizer was applied to bok choy to determine the effect on its growth. The highest fresh yield of bok choy was 64.0±1.41 g, the highest chlorophyll A content was 6.70±0.01%, and chlorophyll B was 2.30±0.03%. Even though the control treatment had the highest C/N ratio compared to the other treatments, the highest yields of bok choy freshness, height, and leaf area were found when applying liquid fertilizer with L. plantarum and Trichoderma sp. starter. The study concluded that bok choy growth was significantly encouraged by fertilizer-seaweed with high levels of phytohormones compared to mineral content. Adding L. plantarum and Trichoderma sp. is a good starter for increasing the growth-promoting properties of liquid seaweed fertilizer.
Editoral Husein, Ahmad
Jurnal Perikanan Universitas Gadjah Mada Vol 26, No 1 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.102097

Abstract

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