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Burrahman, Inal
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Performa Pertumbuhan Larva Ikan Jelawat (Leptobarbus hoevenii Blkr) Yang Dipelihara Dengan Ketinggian Air Berbeda Burrahman, Inal; Ghofur, Muarofah; Arifin, M Yusuf
Jurnal Akuakultur Sungai dan Danau Vol 9, No 1 (2024): April
Publisher : Universitas Batangahari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/akuakultur.v9i1.202

Abstract

The unusual body shape of jelawat fish fry can inhibit growth due to limited foraging movements and increases the risk of being preyed upon by healthier fry (cannibalism). This abnormality problem is usually only discovered when the seeds are around 1-2 months old. Increasing water levels can speed up the use of energy for finding food and breathing, causing more of the available energy to be used for movement rather than growth. This inhibits bone formation and body growth, causing abnormal fish growth. The aim of this research is to determine the optimal water level to increase the growth of jelawat fish seeds (L. hoevenii Blkr). This research used a Completely Randomized Design (CRD) with 4 different Water Height Treatments (A = 15cm; B = 20cm; C = 25cm; D = 30cm), and each treatment was repeated 3 times. The results of the research showed that water level had a significant effect on the growth of jelawat fish seeds. The optimal water height is 25 cm, with an abnormality rate of 1.05%, absolute length growth reaching 3.15 cm per fish, absolute weight growth of 0.55 grams per fish, and survival rate of catfish fry reaching 99.5%.
Fluktuasi Asimetri dan Abnormalitas Ikan Jelawat (Leptobarbus hoevenii Blkr.) Hasil Pemijahan Semi Intensif Ghofur, Muarofah; Syahrizal, Syahrizal; Sugihartono, Muhammad; Burrahman, Inal
Jurnal Akuakultur Sungai dan Danau Vol 9, No 2 (2024): Oktober
Publisher : Universitas Batangahari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/akuakultur.v9i2.222

Abstract

Jelawat fish (Leptobarbus hoevenii Blkr.) is one of the fish that is in great demand by the public. This production has problems with the body shape of fish fry which has many asymmetries and abnormalities. The cause of this cannot be ascertained, but the assumption is due to the influence of high pressure and water currents. For this reason, there needs to be clear research so that the exact cause is known. This study aims to see the fluctuations of asymmetry and abnormality in jelawat fish (L. hoeveni Blkr.) as a result of semi-intensive spawning. This research method is a sampling method on fish from semi-intensive spawning that is 2-3 cm in size. Then meristic measurements were taken and asymmetric fluctuations and abnormalities were calculated. The results of the study found that the value of number asymmetric fluctuations (FAn) ranged from 0.451 to 0. 864, while the magnitude asymmetric fluctuation (FAm) ranges from -0.044-0.053. For an abnormality of 1.05%, absolute length growth of 3.15 cm/head, absolute weight growth of 0.55 grams/head and survival rate of jellyfish larvae 99.5%.%, The results of water quality measurements were temperature range from 26-28.1oC, pH 6.7-7, dissolved oxygen of 4.7-5.3 mg/L, carbon dioxide of 5.3-8 mg/L and ammonia content in maintenance water of 0.001-0.011.
Co-Authors Arifin, M Yusuf Muarofah Ghofur, Muarofah Muhammad Sugihartono, Muhammad Syahrizal Syahrizal