Evaluation of Inbreeding and Genetic Variability of Five Pig Breeds in Czech Republic

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F15%3A%230002156" target="_blank" >RIV/00027014:_____/15:#0002156 - isvavai.cz</a>

Result on the web

<a href="http://www.vuzv.cz/sites/File/_privat/15003.pdf" target="_blank" >http://www.vuzv.cz/sites/File/_privat/15003.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5713/ajas.14.0251" target="_blank" >10.5713/ajas.14.0251</a>

Result language

angličtina

Original language name

Evaluation of Inbreeding and Genetic Variability of Five Pig Breeds in Czech Republic

Original language description

The complex analysis of the pedigree records of Czech Landrace (CLA), Czech Large White-dam line (CLWd), Czech Large White-sire line (CLWs), Duroc (DC), and Pietrain (PN) was performed to determine trends of genetic diversity (GD), and to find the main sources of the GD loss. The total size of the pedigree was 132,365, 391,151, 32,913, 13,299, and 7,160 animals in CLA, CLWd, CLWs, DC, and PN, respectively. Animals born in the years 2011 through 2013 were assumed as the reference population. The average pedigree completeness index for one generation back was 95.9%, 97.4%, 91.2%, 89.8%, and 94.2% for appropriate breeds. Number of ancestors explaining 100% of gene pool was 186, 373, 125, 157, and 37 in CLA, CLWd, CLWs, DC, and PN, respectively. The relative proportion of inbred animals (58%, 58%, 54%, 47%, and 25%), the average inbreeding (2.7%, 1.4%, 2.5%, 3.6%, and 1.3%) and the average co-ancestry (3.1%, 1.6%, 3.3%, 4.2%, and 3.3%) were found over the past decade in analysed breeds. The expected inbreeding under random mating increased during the last 10 years in CLWs and PN and varied from 1.27% to 3.2%. The effective population size computed on the basis of inbreeding was 76, 74, 50, 35, and 83 in 2012 in CLA, CLWd, CLWs, DC, and PN, respectively. The shortest generation interval (1.45) was observed for CLWd in sire to son selection pathway. The longest generation interval obtained PN (1.95) in sire to daughter pathway. All breeds were characterized by a high proportion of inbred animals, but the average inbreeding was low. The most vulnerable breeds to loss of GD are DC and PN. Therefore, a breeding program should be more oriented to prevent the increase of GD loss in these breeds.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GI - Farm animal breeding and farm animal pedigree breeding

OECD FORD branch

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Project

<a href="/en/project/QJ1310109" target="_blank" >QJ1310109: Optimization of the Czech pig breeding program with special regard to reproduction and functional traits</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Asian-Australasian Journal of Animal Sciences 

ISSN

1011-2367

e-ISSN

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Volume of the periodical

28

Issue of the periodical within the volume

1

Country of publishing house

KR - KOREA, REPUBLIC OF

Number of pages

12

Pages from-to

25-36

UT code for WoS article

000347870000005

EID of the result in the Scopus database

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