Inbreeding and coancestry trends in Nordic Holstein

Saija Riitta Tenhunen; Jørn Rind Thomasen; L. P. Sørensen; Gert Pedersen Aamand; Peer Berg; Morten  Kargo

Inbreeding and coancestry trends in Nordic Holstein

Saija Riitta Tenhunen^*, Jørn Rind Thomasen, L. P. Sørensen, Gert Pedersen Aamand, Peer Berg, Morten Kargo

^*Corresponding author af dette arbejde

Center for Kvantitativ Genetik og Genomforskning, Aarhus

Publikation: Bidrag til bog/antologi/rapport/proceeding › Konferencebidrag i proceedings › Forskning › peer review

Abstract

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.

Originalsprog	Engelsk
Titel	WCGALP 2022 Programme book
Antal sider	4
Forlag	Wageningen Academic Publishers
Publikationsdato	jul. 2022
Status	Udgivet - jul. 2022
Begivenhed	World Congress on Genetics Applied to Livestock Production - Rotterdam, Holland Varighed: 3 jul. 2022 → 8 jul. 2022 Konferencens nummer: 12 https://wcgalp.com/

Konference

Konference	World Congress on Genetics Applied to Livestock Production
Nummer	12
Land/Område	Holland
By	Rotterdam
Periode	03/07/2022 → 08/07/2022
Internetadresse	https://wcgalp.com/

Adgang til dokumentet

https://www.wageningenacademic.com/pb-assets/wagen/WCGALP2022/67_009.pdf

Citationsformater

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title = "Inbreeding and coancestry trends in Nordic Holstein",

abstract = "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.",

author = "Tenhunen, {Saija Riitta} and Thomasen, {J{\o}rn Rind} and S{\o}rensen, {L. P.} and Aamand, {Gert Pedersen} and Peer Berg and Morten Kargo",

year = "2022",

month = jul,

language = "English",

booktitle = "WCGALP 2022 Programme book",

publisher = "Wageningen Academic Publishers",

note = "World Congress on Genetics Applied to Livestock Production ; Conference date: 03-07-2022 Through 08-07-2022",

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TY - GEN

T1 - Inbreeding and coancestry trends in Nordic Holstein

AU - Tenhunen, Saija Riitta

AU - Thomasen, Jørn Rind

AU - Sørensen, L. P.

AU - Aamand, Gert Pedersen

AU - Berg, Peer

AU - Kargo, Morten

N1 - Conference code: 12

PY - 2022/7

Y1 - 2022/7

N2 - 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.

AB - 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.

M3 - Article in proceedings

BT - WCGALP 2022 Programme book

PB - Wageningen Academic Publishers

T2 - World Congress on Genetics Applied to Livestock Production

Y2 - 3 July 2022 through 8 July 2022

ER -