PubMed:27808355 JSONTXT

{"project":"Goldhamster2_Cellosaurus","denotations":[{"id":"T1","span":{"begin":72,"end":73},"obj":"CVCL_6479|Finite_cell_line|Mus musculus"},{"id":"T2","span":{"begin":280,"end":281},"obj":"CVCL_6479|Finite_cell_line|Mus musculus"},{"id":"T3","span":{"begin":433,"end":434},"obj":"CVCL_6479|Finite_cell_line|Mus musculus"},{"id":"T4","span":{"begin":519,"end":520},"obj":"CVCL_6479|Finite_cell_line|Mus musculus"}],"text":"Multibreed genetic evaluation in bovines using simulated data employing a composite population.\nGenetic evaluations in Brazil are performed within each animal breed; however, with the wide range of extant genetic groups in the country and the increased use of genetic crossing as a form of rapid meat production, more elaborate programs that can jointly evaluate animals of different genetic groups are needed. Genetic evaluation of a composite breed is difficult because of the variation in the genetic composition of a given herd, as well as the inclusion of non-additive genetic effects among breeds that can be important for selecting traits in certain breed combinations. Newer models include additive and non-additive effects; however, few studies have investigated these aspects in tropical breeds. The aim of this study was to simulate genetic values to compare different models. Non-inclusion of maternal effects in models leads to overestimation of variance and direct heritability. Estimates of the biological additive effects are influenced by the maternal effects; however, estimates of the non-additive effects are minimally influenced by the maternal effects and are well estimated in any situation. The studied models effectively predict the direct genetic values."}

{"project":"GoldHamster","denotations":[{"id":"T1","span":{"begin":152,"end":158},"obj":"UBERON:3010325"},{"id":"T2","span":{"begin":152,"end":158},"obj":"UBERON:0000468"},{"id":"T3","span":{"begin":639,"end":645},"obj":"PR:Q96CJ1"},{"id":"T4","span":{"begin":639,"end":645},"obj":"PR:000006862"},{"id":"T5","span":{"begin":639,"end":645},"obj":"PR:Q91ZD6"},{"id":"T6","span":{"begin":639,"end":645},"obj":"PR:Q811X5"}],"text":"Multibreed genetic evaluation in bovines using simulated data employing a composite population.\nGenetic evaluations in Brazil are performed within each animal breed; however, with the wide range of extant genetic groups in the country and the increased use of genetic crossing as a form of rapid meat production, more elaborate programs that can jointly evaluate animals of different genetic groups are needed. Genetic evaluation of a composite breed is difficult because of the variation in the genetic composition of a given herd, as well as the inclusion of non-additive genetic effects among breeds that can be important for selecting traits in certain breed combinations. Newer models include additive and non-additive effects; however, few studies have investigated these aspects in tropical breeds. The aim of this study was to simulate genetic values to compare different models. Non-inclusion of maternal effects in models leads to overestimation of variance and direct heritability. Estimates of the biological additive effects are influenced by the maternal effects; however, estimates of the non-additive effects are minimally influenced by the maternal effects and are well estimated in any situation. The studied models effectively predict the direct genetic values."}