Pregled bibliografske jedinice broj: 1250623
Assesing among flocks genetic diversity in Istrian sheep to define framework for optimum contribution selection
Assesing among flocks genetic diversity in Istrian sheep to define framework for optimum contribution selection // 30th International Symposium Animal Science Days / Brajković, Vladimir ; Čubrić Čurik, Vlatka ; Čurik, Ino ; Držaić, Ivana ; Shihabi, Marioihabi, M. (ur.).
Zagreb: Agronomski fakultet Sveučilišta u Zagrebu, 2022. str. 30-30 (predavanje, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Assesing among flocks genetic diversity in Istrian
sheep to define
framework for optimum contribution selection
Autori
Špehar, Marija ; Ramljak, Jelena ; Kasap, Ante
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
30th International Symposium Animal Science Days
/ Brajković, Vladimir ; Čubrić Čurik, Vlatka ; Čurik, Ino ; Držaić, Ivana ; Shihabi, Marioihabi, M. - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2022, 30-30
ISBN
978-953-8276-36-1
Skup
30th International Symposium Animal Science Days (ASD 2022)
Mjesto i datum
Zadar, Hrvatska, 21.09.2022. - 23.09.2022
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Istarska ovca ; Genetska raznolikost ; SNP
(Istrian sheep ; Genetic diversity ; SNPs)
Sažetak
Long-term sustainability of economically important native breeds depends on sufficient genetic diversity necessary to cope with challenges in environment and breeding programs. The objective of this study was to analyse genetic diversity between and within flocks of Istrian sheep to define baseline population structure before implementation of optimum contribution selection. Altogether 719 animals from 12 flocks were genotyped with the Ovine SNP50 BeadChip. After quality control (SNP call rate > 0.9 and individual genotype call rate > 0.9, exclusion of sex-linked SNPs) 47, 793 SNPs were used for further analysis. The snpReady package in the R programming environment was used to calculate genomic population parameters. The average population expected heterozygosity (HE), observed heterozygosity (HO) and inbreeding coefficient (F) were 0.357, 0.332, and 0.07, respectively. The average pair-wise genetic differentiation between flocks was moderate (0.194) and ranged from 0.016 to 0.413. The first three PC explained 15.8%, 14.9%, and 10.6% of the variation in the population, showing three genetically disconnected clusters. These results indicate that the Istrian sheep has preserved genetic diversity for the implementation of optimum contribution selection.
Izvorni jezik
Engleski
Znanstvena područja
Poljoprivreda (agronomija), Biotehnologija u biomedicini (prirodno područje, biomedicina i zdravstvo, biotehničko područje)
POVEZANOST RADA
Projekti:
IP-2019-04-3559 - Genomska karakterizacija, konzervacija i selekcija s optimalnim doprinosima kod hrvatskih mliječnih pasmina ovaca (OPTI-SHEEP) (Ramljak, Jelena, HRZZ - 2019-04) ( CroRIS)
