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The effect of inbreeding on the prediction of genomic values
The objective of this work was to evaluate the accuracy of genomic breeding values for simulated traits of different heritabilities in populations with different levels of inbreeding. The genotypes and phenotypes were simulated based on the structure of an experimental population of White Leghorn hens. The phenotypes for percentage of total egg production (TEP) and egg weight at 32 weeks (EW) were simulated with heritabilities of 0.15 and 0.37, respectively, and varying the matting type (more related, less related and random mating individuals, called REC1, REC2, and REC3, respectively) along 10 generations. The last four generations were genotyped. A GBLUP model was used to predict the genomic values using the information of markers. The five replicates did not provide sufficient support to reject hypothesis of equality of the accuracy between the simulated traits and scenarios.
Keywords:
Genomic selection
Inbreeding
Simulation
