<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Searching for the associations between the gene polymorphism and the reproductive traits is essential in defining the genetic native breed specificity, which distinguishes them from the other breeds. The aim of our study was to determine the associations between mutations in the <italic>PRL</italic>, <italic>PRLR</italic>, <italic>PTGS2</italic>, <italic>FUT1</italic> genes and sexual and periparturient activity in native Pulawska gilts. The analysis included 72 animals which gave birth to the first litter. Evaluation of the productive value of gilts accounted for indicators of sexual and periparturient activity as well as reproductive traits. The biological material for molecular analyses was obtained from the hair roots of the gilts. The genotype was verified by PCR RFLP analysis. The primers and PCR conditions were determined on the basis of available literature data. Statistically significant differences (P≤0.05) were found at the <italic>PRL</italic> locus: gilts of <italic>AA</italic> genotypes (<italic>Ins/Ins</italic>) at the <italic>PRL</italic> locus were characterised by longest farrowing duration compared to gilts of <italic>AB</italic> genotype (P≤0.05). The analysis of <italic>PRLR</italic> gene showed that gilts of <italic>TT</italic> genotype revealed a tendency for later occurrence of estrus signs (first and second estrus) and for the markedly longest farrowings (P≤0.05). With regard to <italic>PTGS2</italic> and <italic>FUT1</italic> loci, no significant differences were found in the parameters of sexual and periparturient activity of the gilts. However, gilts of <italic>FUT1 GG</italic> genotype gave birth to and reared the largest first litters (P≤0.05). The results of the studies expand the knowledge about the genetic structure and productivity of Pulawska gilts.</p></abstract>

Searching for the associations between the gene polymorphism and the reproductive traits is essential in defining the genetic native breed specificity, which distinguishes them from the other breeds. The aim of our study was to determine the associations between mutations in the PRL, PRLR, PTGS2, FUT1 genes and sexual and periparturient activity in native Pulawska gilts. The analysis included 72 animals which gave birth to the first litter. Evaluation of the productive value of gilts accounted for indicators of sexual and periparturient activity as well as reproductive traits. The biological material for molecular analyses was obtained from the hair roots of the gilts. The genotype was verified by PCR RFLP analysis. The primers and PCR conditions were determined on the basis of available literature data. Statistically significant differences (P≤0.05) were found at the PRL locus: gilts of AA genotypes (Ins/Ins) at the PRL locus were characterised by longest farrowing duration compared to gilts of AB genotype (P≤0.05). The analysis of PRLR gene showed that gilts of TT genotype revealed a tendency for later occurrence of estrus signs (first and second estrus) and for the markedly longest farrowings (P≤0.05). With regard to PTGS2 and FUT1 loci, no significant differences were found in the parameters of sexual and periparturient activity of the gilts. However, gilts of FUT1 GG genotype gave birth to and reared the largest first litters (P≤0.05). The results of the studies expand the knowledge about the genetic structure and productivity of Pulawska gilts.

Estrus Behaviour and Reproductive Traits of Pulawska Gilts Associated with Selected Gene Polymorphisms

Department of Animal Breeding and Product Quality Assessment

Institute of Biological Basis of Animal Production, Faculty of Biology, Animal Sciences and Bioeconomy

Annals of Animal Science

This work is licensed under the Creative Commons Attribution 4.0 International License.

Searching for the associations between the gene polymorphism and the reproductive traits is essential in defining the genetic native breed specificity, which...

Estrus Behaviour and Reproductive Traits of Pulawska Gilts Associated with Selected Gene Polymorphisms

Publicado en línea: 29 ene 2021

Páginas: 159 - 172

Recibido: 27 nov 2019

Aceptado: 26 jun 2020

DOI: https://doi.org/10.2478/aoas-2020-0066

Palabras clave
native Pulawska gilts, sexual and periparturient activity,

© 2021 Marek Babicz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Estrus Behaviour and Reproductive Traits of Pulawska Gilts Associated with Selected Gene Polymorphisms

Publicado en línea: 29 ene 2021

Páginas: 159 - 172

Recibido: 27 nov 2019

Aceptado: 26 jun 2020

DOI: https://doi.org/10.2478/aoas-2020-0066

Palabras clavenative Pulawska gilts, sexual and periparturient activity,

© 2021 Marek Babicz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Palabras clave
native Pulawska gilts, sexual and periparturient activity,