Inbreeding and coancestry trends in Nordic Holstein
| Autor: | Tenhunen, Saija Riitta, Thomasen, Jørn Rind, Sørensen, L. P., Aamand, Gert Pedersen, Berg, Peer, Kargo, Morten |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Zdroj: | Tenhunen, S R, Thomasen, J R, Sørensen, L P, Aamand, G P, Berg, P & Kargo, M 2022, Inbreeding and coancestry trends in Nordic Holstein . in WCGALP 2022 Programme book . Wageningen Academic Publishers, World Congress on Genetics Applied to Livestock Production, Rotterdam, Netherlands, 03/07/2022 . < https://www.wageningenacademic.com/pb-assets/wagen/WCGALP2022/67_009.pdf > |
| Popis: | Increased rates of inbreeding have been observed in several Holstein populations across the world since genomic selection (GS) was implemented into the breeding programs. The objective of this study was to test whether this is also the case in the Nordic Holstein population using pedigree data. Rates of inbreeding were estimated before, during and after the GS implementation. We could not detect any increase in inbreeding or coancestry rates in Nordic Holstein. Effective population size increased over the studied time periods from 68 to 104, despite fewer sires being used. This might be because more of sires of sons have been used to produce AI bulls compared to the time before implementation of GS. |
| Databáze: | OpenAIRE |
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