Abstract

We estimated direct response to selection for body weight and correlated responses in total length, body depth and body width at harvest in Silver barb (Puntius gonionotus Bleeker 1850) over five generations. A control group was created each generation from average individuals in the selection line, but no separate control line was kept. Restricted maximum likelihood (REML) analyses were carried out on 7699 individuals, from 1998 to 2003. The selection line had significantly greater body weight than the control but there could be a bias in the estimate of the response in all generations except the last one. The program is currently being reinvigorated by crossing with other stock, maintaining a full pedigree, and fitting an individual animal model, to enable genetic progress and a rigorous monitoring of inbreeding.

N. Pongthana, N. H Nguyen, R. W Ponzoni

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 09.07, 2006
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