Finfish Breeding and Hatchery Management

Unit 7 - Breeding of mahseers

7.3. Injection of brooders

• Two commercially available synthetic hormones, viz. ovaprim (Syndel Laboratories Canada; sGnRH-a + domperidone) and ovatide (Hemmo Pharma, Mumbai; mLHRH-a + domperidone) are effective n inducing spawning in T. khudree.
• The sex is identified based on the morphological characters wherein the ripe female had a soft and swollen abdomen, while the male readily oozed out milt with gentle pressure on abdomen.
• Only single dose of the hormones is administered intramuscularly to both male (0.2-0.3 ml/kg body weight) and female (0.6 ml/kg body weight).
• The brood could be anaesthetized with quinaldine at 10 ppm for 1-2 minutes.
• The injected females and males are held separately in nylon hapas (rectangular box-shaped containers) with flowing water.
• The females are periodically checked for their readiness for stripping
  
  
  

T. khudree being injected with ovatide