Males were injected with Lutenizing
hormone-releasing hormone analogue (LHRHa; Suprefact,
Sanofi-Aventis Deutschland GmbH, Frankfurt am Main,
Germany) and domperidone (Motilium-M, Olic, Thailand)
at a dose of 20g/kg and 10 mg/kg, respectively. Induction
of spermiation by suprefact and motilium-M is a general
procedure for controlling reproduction in commercial fish
farming