Journal
AQUACULTURE RESEARCH
Volume 42, Issue 11, Pages 1694-1702Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2109.2010.02767.x
Keywords
yellow perch; early growth; DNA parentage analysis; genotype by environment; breeding programme
Categories
Funding
- National Institute of Food and Agriculture, US Department of Agriculture [2005-38879-02357, 2006-38879-03684]
- Ohio State University, Ohio Agricultural Research and Development Center
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From 17 families, 400 fingerlings were evenly stocked into four replicates of each of five groups: single family from an Ohio strain, single family from a North Carolina strain, three families from the cross of five strains, 12 families from the cross of five strains and a combination of all 17 families. After rearing for 27 weeks, the progeny from the 17 families could be confidently assigned to their family of origin at the rate of 97.9%. The cross-bred multi-families (12-family and 3-family groups) from different strains gained significantly more weight than both single-family groups in separate tanks throughout most of the experiment (P<0.05), but no significant differences were detected in body weight among the four groups in the all-family communal tanks (P>0.05). Both single families grew significantly faster in the all-family communal tanks than in single-family tanks by the end of the experiment (P<0.05). In addition, no correlation was detected between family mean weight obtained from the multi-family tanks (12-family and 3-family groups) and the family mean weight in the all-family tanks. These results indicated that there were strong effects of genotype by environment interactions on early growth performance of yellow perch.
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