Abstract
This research aims to examines the influence of age on masculinization of Clarias gariepinus larvae immersed by methyl testosterone (MT) natural hormone. This research used 270 catfish larvae divided into 3 groups of age those are 5, 10, and 20 days. The research implemented complete random design (CRD). Immersion was performed using methyl testosterone hormone at the dose of 0.25 g/L for 20 hours. Observation of fish was done after 60 day-old fish. Data obtained was analyzed using one-way analysis of variance The average percentages of male-sex catfish after immersing in natural MT on group I, II, and III were 97.67, 91.07, and 86.67%, respectively. The results showed that the age of the larvae did not affect significantly (P>0.05) on the percentage of male sex of Clarias gariepinus. The average percentage of male sex in 5 days age group was higher than 10 and 20 days age group. In conclusion, the masculinization of Clarias gariepinus larva immersed by MT natural hormone is not influenced by age of fish before dipping.
Highlights
Pengembangan budidaya air tawar dewasa ini semakin digalakkan terutama budidaya air tawar yang rata-rata cenderung masih menerapkan pola budidaya ekstensif
The results showed that the age of the larvae did not affect significantly (P>0.05) on the percentage of male sex of Clarias gariepinus
Sex Reversal Memproduksi Benih Ikan Jantan atau Betina
Summary
Dalam penelitian ini digunakan larva ikan lele dumbo berjumlah 270 ekor berumur lima hari dari pembibitan ikan di Ketapang (Aceh Besar). Penelitian ini merupakan jenis penelitian eksperimental yang menggunakan rancangan acak lengkap (RAL) dengan tiga perlakuan dan tiga ulangan. Perlakuan I (PI) dengan lama waktu perendaman 20 jam, perlakuan II (PII) dengan lama waktu perendaman 20 jam, dan. Perlakuan III (PIII) dengan lama waktu perendaman 20 jam. Larva ikan lele dumbo berumur 5, 10, dan 20 hari direndam dalam MT alami selama 20 jam dan pengamatan dilakukan pada saat ikan berumur 60 hari
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