| dc.contributor.author | Oribamise, Babatunde Victor | |
| dc.description.abstract | Non-additive genetic effects are usually ignored in animal breeding programs due to data structure, computational limitations, and over-parameterization of the models. Non-additive genetic effects play an important role in the expression of complex traits in livestock species, such as longevity and stayability. Components of genetic variance for additive and non-additive genetic effects were estimated for longevity and stayability in U.S. Western ewes using pedigree relationship matrices. Litter size were also investigated for direct and maternal effects. For longevity, a larger proportion of phenotypic variance was explained by non-additive genetic effects than by additive effects for model A+D, indicating that including dominance genetic effects are important. Results suggest that inclusion of non-additive genetic effects in animal models is possible in estimating longevity and stayability and will improve selection accuracy and reduce overestimation of additive genetic effects. | en_US |
| dc.publisher | North Dakota State University | en_US |
| dc.rights | NDSU policy 190.6.2 | en_US |
| dc.title | Estimating the Impacts of Litter Size and Non-Additive Genetic Effects on Ewe Longevity and Stayability in a U.S. Western Extensive Range Production System | en_US |
| dc.type | Thesis | en_US |
| dc.date.accessioned | 2022-06-08T17:02:39Z | |
| dc.date.available | 2022-06-08T17:02:39Z | |
| dc.date.issued | 2021 | |
| dc.identifier.uri | https://hdl.handle.net/10365/32721 | |
| dc.subject | Bayesian analysis | en_US |
| dc.subject | bioinformatics | en_US |
| dc.subject | genetics | en_US |
| dc.subject | longevity | en_US |
| dc.subject | sheep | en_US |
| dc.subject | stayability | en_US |
| dc.identifier.orcid | 0000-0003-1001-5233 | |
| dc.rights.uri | https://www.ndsu.edu/fileadmin/policy/190.pdf | en_US |
| ndsu.degree | Master of Science (MS) | en_US |
| ndsu.college | Agriculture, Food Systems and Natural Resources | en_US |
| ndsu.department | Animal Sciences | en_US |
| ndsu.program | Animal Sciences | en_US |
| ndsu.advisor | Hanna, Lauren | |
