![]() ![]() Los valores genéticos de individuos en una población deben obtenerse de forma precisa y a edad temprana para promover un progreso genético rápido. Key words: Genomic evaluation Deregressed predicted genetic value Genomic predicted value Accuracy Genetic correlation There were only slight advantages of using DEBVs as response variables over using EBVs. They decreased when PEn and PEv were farther apart. Genetic correlation estimates between true genetic values and GVs varied from 0.41 to 0.53 in the two scenarios studied. The trends for R 2 and PEV held true for both EBV and DEBV used as response variables. The closer PEn was to PEv, the higher the R 2, and correspondingly, the lower the predicted error variance. When PEn was the largest, the mean R 2 of GV was the highest, 0.77 ± 0.01. GVs, their accuracies, and genetic correlations were obtained using the GenSel and ASREML programs. Generations 7 to 14 of the second population were used in several combinations as training (PEn) and evaluation (PEv) subpopulations. Thereafter, 20 males and 200 females were used to generate a second 14-generation population, with 6,400 individuals per generation and its corresponding phenotype and genotype in SNP terms. A first population, effective population size 800 and 100 generations, was simulated using the QMSim program to generate linkage disequilibrium. The objectives of this study were to compare accuracies (R 2) of genomic values (GVs) and to estimate genetic correlation between true genetic values and genomic values obtained using predicted breeding values (EBV) and deregressed EBV (DEBV) as response variables. Highly accurate predicted genetic values must be obtained at an early age to promote rapid genetic progress. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |