Evolution of inbreeding : a gaze into five Italian beef cattle breeds history
Rovelli, Giacomo (Centre de Recerca en Agrigenòmica)
Luigi Sierra, Maria Gracia (Centre de Recerca en Agrigenòmica)
Guan, Dailu (Centre de Recerca en Agrigenòmica)
Sbarra, Fiorella (National Association of Italian Beef-Cattle Breeders)
Quaglia, Andrea (National Association of Italian Beef-Cattle Breeders)
Sarti, Francesca Maria (University of Perugia. Department of Agricultural, Food and Environmental Sciences)
Amills i Eras, Marcel (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Lasagna, Emiliano (University of Perugia. Department of Agricultural, Food and Environmental Sciences)

Date:	2021
Abstract:	In the last decades, intensive selection programs have led to sustained increases of inbreeding in dairy cattle, a feature that might have adverse consequences on the viability and phenotypic performance of their offspring. This study aimed to determine the evolution of inbreeding of five Italian beef cattle breeds (Marchigiana, Chianina, Romagnola, Maremmana, and Podolica) during a period of almost 20 years (2002-2019). The estimates of Ho, He, F, and F averaged across years (2002-2019) in the studied breeds fluctuated between 0. 340-0. 401, 0. 348-0. 392, -0. 121-0. 072, and 0. 000-0. 068, respectively. Moreover, annual rates of increase of the estimated inbreeding coefficients have been very low (F = 0. 01-0. 02%; F = 0. 003-0. 004%). The use of a high number of bulls combined with strategies implemented by the Association of Italian Beef Cattle Breeders ANABIC to minimize inbreeding might explain these results. Despite the fact that diversity and inbreeding have remained quite stable during the last two decades, we have detected a sustained decrease of the population effective size of these five breeds. Such results should be interpreted with caution due to the inherent difficulty of estimating N from SNPs data in a reliable manner.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Bos taurus ; Genetic diversity ; Coancestry ; Effective population size ; Single nucleotide polymorphism
Published in:	PeerJ, Vol. 9 (september 2021) , ISSN 2167-8359

DOI: 10.7717/peerj.12049
PMID: 34692245

17 p, 2.4 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CRAG (Centre for Research in Agricultural Genomics)
Articles > Research articles
Articles > Published articles