Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats
Dissertation (MSc)--University of Pretoria, 2013.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2021
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613611445190656 |
|---|---|
| access_status_str | Open Access |
| author2 | Visser, Carina |
| author_browse | Visser, Carina |
| author_facet | Visser, Carina |
| collection | Thesis |
| dc_rights_str_mv | © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2013. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/79236 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:54.079Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/79236 The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats Visser, Carina christy.garritsen@gmail.com Van Marle-Koster, Este Garritsen, Christy UCTD Dissertation (MSc)--University of Pretoria, 2013. South Africa is the world’s largest mohair-producing country, contributing over 50% of the world’s mohair, and therefore genetic improvement of Angora goats in South Africa is imperative in order to maintain this position in the market and the quality of the mohair clip. Pedigree integrity is vital for the success of any breeding programme. DNA parentage testing has become a useful tool in amending inaccuracies in on-farm records of various species. Previous studies have determined that errors in pedigree records may have a negative effect of up to 15% on genetic improvement in livestock. In the current study the extent of incorrect paternity records was quantified in 381 South African Angora goats using a panel of 12 microsatellite markers selected for parentage verification. 14.3% of the on-farm records were missing or incorrect. The microsatellite marker panel had a CPE of 99.6%, PIC of 0.700 and average HE of 0.738. Estimated Breeding Values for fleece traits (fibre diameter and fleece weight) and body weights (birth weight, weaning weight, eight month weight, yearling weight and 16 month weight) were estimated for 21 sires using ASREML, firstly using the breeder’s recorded pedigree and secondly using the DNA marker-verified pedigree. Sires were ranked according to EBVs for each trait. The sires ranked lowest in the breeder’s records for fibre diameter, birth weight and weaning weight were moved to the top three ranks in the DNA verified pedigree. The ranking for fleece weight was not as severely affected. The significant change in sire ranking after DNA pedigree verification confirms the importance of pedigree integrity for selection accuracy in the South African Angora goat industry. Animal and Wildlife Sciences MSc Unrestricted 2021-04-06T07:22:20Z 2021-04-06T07:22:20Z 2013/12/19 2013 Dissertation Garritsen, C 2013, The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/79236> E14/4/324 http://hdl.handle.net/2263/79236 en © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats |
| title | The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats |
| title_full | The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats |
| title_fullStr | The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats |
| title_full_unstemmed | The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats |
| title_short | The impact of DNA parentage verification on EBV estimation and sire ranking in South African Angora goats |
| title_sort | impact of dna parentage verification on ebv estimation and sire ranking in south african angora goats |
| topic | UCTD |
| url | http://hdl.handle.net/2263/79236 |