Category: fish_technique

gonad maturity determination in the field practice

19 December 2008, 3 Comments

when we practice about fish breeding, we learn how to identifying and selecting of fish gonad maturity. the best technique for this kind based on nucleus migration. egg should be taken using intra ovarian biopsy by canulator or flexible tube. after immersed in serra/clearing solution for 3-5 minutes, nucleus migration could be observed under microscope. [...]

fish died: why?

14 October 2008, 2 Comments

We should to know why our fish died. There’re several reason that caused fish died: handling, environment or pathogenic organism.
Handling; Improperly on harvesting, packaging, transporting or acclimatizing could to cause fish health disrupted or even died. Usually on early time of fish stocking in new pond (e.g 1-2 weeks after stocking).  As a solution, we [...]

Manual on Catfish Hatchery

11 October 2008, 7 Comments

Pemijahan ikan patin (Pangasianodon hypopthalmus, sebelumnya Pangasius hypopthalmus atau Pangasius sutcii) masih dilakukan secara buatan yaitu melalui pemberian rangsangan hormon untuk proses pematangan akhir gonad dan ovulasi telur, pengeluaran telur dilakukan dengan cara pengurutan (stripping) dan pembuahan dilakukan secara kering dengan mencampur sperma dan telur. Larva hasil penetasan telur kemudian dideder di akuarium atau [...]

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