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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Agrosaintifika: Jurnal Ilmu-Ilmu Pertanian
Naryaningsih, Agustien
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Materials Science & Nanotechnology Physics

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Persilangan Ikan Nila (Oreochromis niloticus) Dari Berbagai Varietas Serta Ikan Mujahir (Oreochromis mossambicus) Untuk Mendapatkan Benih Bersifat Unggul Aulia, Rahma; Permana, Dian; Naryaningsih, Agustien; Soleh, Mohamad; Siswanto, Siswanto; Sahlan, Sahlan
AGROSAINTIFIKA Vol. 6 No. 1 (2023): November
Publisher : LPPM Universitas KH. A. Wahab Hasbullah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32764/agrosaintifika.v6i1.4030

Abstract

This research aims to produce seeds from the crossbreeding of nile tilapia (Oreochromis niloticus) of the jabir, nirwana, and sultana strains, as well as Mozambique tilapia (Oreochromis mossambicus). The crosses involved using male jabir nile tilapia with female nirwana nile tilapia and male mozambique tilapia with female sultana nile tilapia. The breeding was conducted in a 1:3 ratio of male to female. The spawning process occurred over a 16-day cycle, followed by a 28-day period of larval rearing. Crossbreeding between jabir and nirwana resulted in a higher spawning rate (17%) compared to the crossbreeding of mozambique and sultana (7%). The specific growth rate of seeds from the jabir and nirwana cross (14%) was not significantly different from the mozambique and sultana cross (13%). The survival rate of seeds from the jabir and nirwana cross (80%) was higher than from the mozambique and sultana cross (70%). Crossbreeding between male jabir nile tilapia and female nirwana nile tilapia exhibited better performance compared to the crossbreeding of male mozambique tilapia and female sultana nile tilapia.
Inkubasi suhu selama tahap embrio-larva untuk menginduksi pembalikan jenis kelamin ikan nila strain Red NIFI Soleh, Mohamad; Aulia, Rahma; Naryaningsih, Agustien; Ruliaty, Lisa; Nur, Abidin
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.5612

Abstract

This research aims to achieve male sex reversal in Nile Tilapia (Orechromis niloticus) of the red NIFI strain through high-temperature incubation during the embryonic or pre-swimming larval phase. Larvae resulting from the natural mating of red NIFI strain broodstock were incubated under temperature treatments of 31oC, 33oC, 35oC, and a control group (<30oC), each with three replicates. Temperature regulation was facilitated using a heater.  During the initial 3 hours of incubation, the heater was turned off for 6 hours, followed by another 3 hours of incubation with the heater on. This pattern was repeated daily until the larvae began to swim. The treated larvae were then reared for 90 days. Thirty specimens from each replicate were identified for gender using the squash acetocarmine method. The study results indicated that temperature differences significantly influenced (p<0.05) the sex ratio of Nile tilapia in the red NIFI strain. The highest proportion of males was achieved at 33oC, at 73.33%, and 35oC, at 64.43%. There were no significant differences (p>0.05) in fry survival rates at 7 days and after 90 days of rearing.
Co-Authors Aulia, Rahma Dian Permana, Dian Nur, Abidin Ruliaty, Lisa S Siswanto Sahlan Sahlan Soleh, Mohamad