Naslov
Genomic analysis of inbreeding depression on sperm quality traits in the Austrian Fleckvieh cattle

Autori
Ferenčaković, Maja ; Soelkner, Johann ; Curik, Ino

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the 47th Croatian & 7th International Symposium on Agriculture / Milan Pospišil - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2012

ISBN
978-953-7878-02-3

Skup
47th Croatian & 7th International Symposium on Agriculture

Mjesto i datum
Opatija, Hrvatska, 13.02.2012. - 17.02.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
inbreeding depression; pedigree; ROH; semen quality traits

Sažetak
Since it was developed inbreeding has mainly been estimated from pedigree data. Runs of homozygosity (ROH) were recently proposed as more accurate estimates of inbreeding. In this study we estimated inbreeding depression on sperm quality traits in Austrian Fleckvieh cattle using inbreeding coefficients derived from pedigree (Fped) and genomic information (ROHs of various length: FROH1 , FROH2 , FROH4, FROH8, and FROH16). Semen quality data of 27694 ejaculates from 602 bulls collected in two Austrian Artificial insemination centres (Oberösterreichische Besammungsstatin GmbH Hohenzell and NÖ. Genetik Rinderbesamungs GmbH Wieselburg) were analysed separately. Sperm quality was defined with volume, sperm concentration, percentage of viable spermatozoa and motility. Bulls were genotyped with Illumina Bovine 50k SNP chip. We used mixed model with a bull as a random effect and all other effects (age of the bull, semen collector, month and year of collection and number of ejaculates per bull per day), including pedigree and genomic inbreeding coefficients (covariable), as fixed effects. Significant inbreeding depression was only observed for the volume in Wieselburg data set (p<0.05 for Fped, and p<0.01 for FROH1 and FROH2) while all other estimates were not significant.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija), Biotehnologija

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