Titel (eng)

Tracing the Dynamical Genetic Diversity Changes of Russian Livni Pigs during the Last 50 Years with the Museum, Old, and Modern Samples

Autor*in

Alexandra A. Abdelmanova   L.K. Ernst Federal Research Center for Animal Husbandry

Natalia A. Zinovieva   L.K. Ernst Federal Research Center for Animal Husbandry

Vladimir I. Trukhachev   Timiryazev Russian State Agrarian University-Moscow Agrarian Academy

Lusheng Huang   Jiangxi Agricultural University

Huashui Ai   Jiangxi Agricultural University

Gottfried Brem   University of Veterinary Medicine Vienna

Johann Sölkner   University of Natural Resources and Life Sciences Vienna

Oksana I. Boronetskaya   Timiryazev Russian State Agrarian University-Moscow Agrarian Academy

Roman Yu Chinarov   L.K. Ernst Federal Research Center for Animal Husbandry

Tatiana E. Deniskova   L.K. Ernst Federal Research Center for Animal Husbandry

Veronika R. Kharzinova   L.K. Ernst Federal Research Center for Animal Husbandry

Verlag

MDPI

Beschreibung (eng)

The pig industry is usually considered an intensive livestock industry, mainly supported by hybrid breeding between commercial pig breeds. However, people's pursuit of a more natural environment and higher meat quality has led to an increasing demand for eco-friendly and diverse pig feeding systems. Therefore, the importance of rearing and conserving local pig breeds is increasing. The Livni pig is a local breed with good adaptability to the environmental and fodder conditions in central Russia. In this study, we aimed to analyze the genetic diversity and population structure of Livni pigs using whole-genome single nucleotide polymorphism (SNP) data. We utilized the Porcine GGP HD BeadChip on genotype samples from old (n = 32, 2004) and modern (n = 32, 2019) populations of Livni pigs. For the museum samples of Livni pigs (n = 3), we extracted DNA from their teeth, performed genomic sequencing, and obtained SNP genotypes from the whole-genome sequences. SNP genotypes of Landrace (n = 32) and Large White (n = 32) pigs were included for comparative analysis. We observed that the allelic richness of Livni pigs was higher than those of Landrace and Large White pigs (AR = 1.775-1.798 vs. 1.703 and 1.668, respectively). The effective population size estimates (NE5 = 108 for Livni pigs, NE5 = 59 for Landrace and Large White pigs) confirmed their genetic diversity tendency. This was further supported by the length and number of runs of homozygosity, as well as the genomic inbreeding coefficient (almost twofold lower in Livni pigs compared to Landrace and Large White pigs). These findings suggest that the Livni pig population exhibits higher genetic diversity and experiences lower selection pressure compared to commercial pig populations. Furthermore, both principal component and network tree analyses demonstrated a clear differentiation between Livni pigs and transboundary commercial pigs. The TreeMix results indicated gene flow from Landrace ancestors to Livni pigs (2019) and from Large White ancestors to Livni pigs (2004), which was consistent with their respective historical breeding backgrounds. The comparative analysis of museum, old, and modern Livni pigs indicated that the modern Livni pig populations have preserved their historical genomic components, suggesting their potential suitability for future design selection programs.

Sprache des Objekts

Englisch

Datum

2024

Rechte

Dieses Werk bzw. dieser Inhalt steht unter einer
CC BY 4.0 - Creative Commons Namensnennung 4.0 International Lizenz.

CC BY 4.0 International

http://creativecommons.org/licenses/by/4.0/

Klassifikation

Homozygosity; Runs

Mitglied in der/den Collection(s) (1)