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Title: Genetics and genomics - integration of molecular genetics into a breeding program for rainbow trout 
Author: Silverstein, Jeffery T.; Weber, Gregory M.; Rexroad, Caird E. III; Vallejo, Roger L.
Date: 2006
Publisher: Israeli Journal of Aquaculture - BAMIGDEH
Citation: Silverstein, J.T., Weber, G.M., Rexroad I.C.E., & Vallejo, R.L. (2006). Genetics and genomics - integration of molecular genetics into a breeding program for rainbow trout. The Israeli Journal of Aquaculture - Bamidgeh, 58(4), 231-237.
Abstract: At the National Center for Cool and Cold Water Aquaculture (US Department of Agriculture, Ag. Research Service) in Leetown, WV, we have a broodstock development program now entering the second generation of family-based selective breeding using expected breeding values (EBVs). Our major breeding objectives are faster growth and resistance to Flavobacterium psy- chrophilum, the causative agent of bacterial coldwater disease. For these traits we have devel- oped assays to evaluate phenotypic performance. In addition to our breeding program, we are participating in an international collaboration to develop a microsatellite marker linkage map for the rainbow trout with the intent of identifying quantitative trait loci (QTL) and using them in mark- er (MAS) or gene-assisted (GAS) selection. There are several possible approaches with regard to the types and numbers of markers to develop and the strategies and methods for implement- ing the markers in a selective breeding program. This paper describes the choices we made con- cerning QTL identification for traits of high, low, and unknown degrees of heritability. These traits are plasma cortisol response to a crowding stress (h2 = 0.4), feed intake (h2 = 0.1) and resis- tance to F. psychrophilum (0.3
Series/Report No.: The Israeli Journal of Aquaculture - Bamidgeh
Pages/Duration: 7 pages
ISSN: 0792-156X
URI: http://hdl.handle.net/10524/19181
Keywords: rainbow trout, selective breeding, marker assisted selection
LC Subject Headings: Fish culture--Israel--Periodicals.
Fish culture--Periodicals.

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