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Abstract
In this report we describe the analysis of an advanced intercross line (AIL) to confirm the quantitative trait locus (QTL) regions found for fatness traits in a previous study. QTL analysis was performed on chromosomes 1, 3, 4, 15, 18, and 27. The AIL was created by random intercrossing in each generation from generation 2 (G2) onwards until generation 9 (G9) was reached. QTL for abdominal fat weight (AFW) and/or percentage abdominal fat (AF%) on chromosomes 1, 3 and 27 were confirmed in the G9 population. In addition, evidence for QTL for body weight at the age of 5 (BW5) and 7 (BW7) weeks and for the percentage of intramuscular fat (IF%) were found on chromosomes 1, 3, 15, and 27. Significant evidence for QTL was detected on chromosome 1 for BW5 and BW7. Suggestive evidence was found on chromosome 1 for AFW, AF% and IF%, on chromosome 15 for BW5, and on chromosome 27 for AF% and IF%. Furthermore, evidence on the chromosome-wise level was found on chromosome 3 for AFW, AF%, and BW7 and on chromosome 27 for BW5. For chromosomes 4 and 18, test statistics did not exceed the significance threshold.
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1 Wageningen University, Animal Breeding and Genetics Group, Wageningen Institute of Animal Sciences, Wageningen, The Netherlands (GRID:grid.4818.5) (ISNI:0000000107915666); University Bonn, Institute of Animal Breeding Science, Bonn, Germany (GRID:grid.10388.32) (ISNI:0000000122403300)
2 Breeding Research Centre, Nutreco, Boxmeer, The Netherlands (GRID:grid.10388.32)
3 Wageningen University, Animal Breeding and Genetics Group, Wageningen Institute of Animal Sciences, Wageningen, The Netherlands (GRID:grid.4818.5) (ISNI:0000000107915666)