The possible of improving productivity in aquaculture by 
applying selection and crossbreeding is very good. This is 
particularly due to large genetic variance in most of the 
economically important traits and to high fecundity in species 
of interest. To increase the efficiency of the breeding 
program individual selection should be combined with family 
selection since some of the traits have low heritability and 
since traits like meat quality, survival and age at maturation 
are included. It is recommended that breeding stations for 
carrying out selection programs are develop. Progeny testing 
is of little interest, although both sexes could be tested, 
since it increases the generation interval markedly.

T. Gjedrem

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume X. Breeding programs for swine, poultry, and fish., , 373–387, 1986
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