Project Details

Development of Improved Growout Culture for Chinese Catfish Through Ploidy and Feed Applications, Year 02

July 1, 1995

LocationFundingInstitutionPrincipal Investigator(s)
Hawaii $55,000 University of Hawaii at Manoa A. Fast, J. Qin, and H. Ako
  1. Confirm reliability of triploid (3N) catfish production using cold shock treatment of fertilized eggs and compare with pressure shock treatments.
  2. Compare survival, growth rates, FCR and condition of normal diploid (2N) and triploid catfish produced by the two shock treatments.
  3. Compare growth rates, survival, FCR and disease resistance of Chinese catfish fed different feed formulations. Conduct feed performance trials of triploid and diploid fish at commercial farms, and in more controlled laboratory settings at the Hawaii Institute of Marine Biology (HIMB).
  4. Based on intrinsic feeding patterns observed Year One using demand feeders and data logger recordings, alter feeding patterns to coincide with those commonly used at commercial production facilities. Observe comparative growth rates, survival and FCR of fish with altered versus intrinsic feeding patterns.
  5. Using cold and /or pressure shock, attempt to produce tetraploid (4N) Chinese catfish and rear these fish to reproductive age. If successful, we could consider crossbreeding or tetraploids with diploids during Year Three to produced 100 percent triploids.

Conduct technology transfer to the aquaculture community in Hawaii through workshops, collaborative research and publications.