Enhanced comment feature has been enabled for all readers including those not logged in. Click on the Discussion tab (top left) to add or reply to discussions.
Foundation Animal Effects: Difference between revisions
(Created page with "Category: Genetic Evaluation Including ''additive genetic group effects'' in BLUP animal models when producing EPDs is important when the foundation animals come from genetically different origins such as distinct breeds.<ref>Westell, R. A., R. L. Quaas, and L. D. Van Vleck. 1988. Genetic groups in an animal model. J. Dairy Sci. 71:1310.</ref><ref>Quaas, R. L. 1988. Additive ge...") |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Category: Genetic Evaluation]] | [[Category: Genetic Evaluation]] | ||
Including ''additive genetic group effects'' | Including ''additive genetic group effects''<ref>Westell, R. A., R. L. Quaas, and L. D. Van Vleck. 1988. Genetic | ||
groups in an animal model. J. Dairy Sci. 71:1310.</ref><ref>Quaas, R. L. 1988. Additive genetic model with groups and relationships. J. Dairy Sci. 71:1338. </ref> | groups in an animal model. J. Dairy Sci. 71:1310.</ref><ref>Quaas, R. L. 1988. Additive genetic model with groups and relationships. J. Dairy Sci. 71:1338. </ref> in [[Best_Linear_Unbiased_Prediction | BLUP]] animal models used to produce [[BIF_recommends_the_use_of_EPD | EPDs]] is important when the [[Glossary#F | foundation animals]] come from genetically different origins such as distinct breeds. | ||
This | This includes so-called multi-breed analysis and analysis of [[Composite_Breeding | composite breed]] data. | ||
Also, genetic groups should be used in BLUP models when foundation animals of the same breed enter the population at different periods of time to account for the effect of [[Glossary#G | genetic trend]] over time. Foundation animals from distinctly different periods of time can have different genetic merit due to selection resulting in genetic trend. | Also, genetic groups should be used in BLUP models when foundation animals of the same breed enter the population at different periods of time to account for the effect of [[Glossary#G | genetic trend]] over time. Foundation animals from distinctly different periods of time can have different genetic merit due to selection resulting in genetic trend. | ||
All foundation animals are modeled as having the same average genetic merit when additive genetic group effects are not included. Including additive genetic groups permit the model to predict if genetic differences occured between the groups. These differences impact the descendants of the foundation animals' EPDs. | All foundation animals are modeled as having the same average genetic merit when additive genetic group effects are not included. Including additive genetic groups permit the model to predict if genetic differences occured between the groups. These differences impact the descendants of the foundation animals' EPDs. | ||
Revision as of 14:07, 22 June 2024
Including additive genetic group effects[1][2] in BLUP animal models used to produce EPDs is important when the foundation animals come from genetically different origins such as distinct breeds. This includes so-called multi-breed analysis and analysis of composite breed data.
Also, genetic groups should be used in BLUP models when foundation animals of the same breed enter the population at different periods of time to account for the effect of genetic trend over time. Foundation animals from distinctly different periods of time can have different genetic merit due to selection resulting in genetic trend.
All foundation animals are modeled as having the same average genetic merit when additive genetic group effects are not included. Including additive genetic groups permit the model to predict if genetic differences occured between the groups. These differences impact the descendants of the foundation animals' EPDs.
