Site pages
Current course
Participants
General
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 6
Topic 7
Topic 8
Topic 9
Topic 10
Topic 11
Topic 12
Topic 13
Topic 14
Topic 15
Topic 16
Topic 17
Topic 18
Topic 19
Topic 20
Topic 21
Topic 22
Topic 23
Topic 24
Topic 25
Topic 26
Topic 27
Topic 28
Topic 29
Topic 30
Topic 31
Topic 32
Topic 33
Topic 34
Topic 35
Topic 36
Topic 37
3.2.2. Sympathetic breeding
Unit 3 - Breeding of major carps
- Sympathetic breeding refers to the breeding of uninjected fish at the sympathy of injected fish.
- This is common in bundh breeding, wherein, only 10-20 brooders are injected with either pituitary extract or synthetic spawning agent and the rest are not injected.
- After an interval of about 8-10 hours, the injected brooders first start spawning and subsequently the uninjected brooders are also stimulated to spawn, thereby leading to the complete spawning of all the brooders.
- Sympathetic spawning leads to lesser use of hormone and reduced handling of brooders.
- By this method, natural spawning of both grass carp and silver carp is possible in a dry bundh of Bankura District where they spawned naturally, without stripping.
- Some consider sympathetic breeding as one of the reliable means of mass breeding of Chinese carps to meet the increasing demand of their seed.
Last modified: Thursday, 9 June 2011, 8:59 AM