DOI QR코드

DOI QR Code

Monitoring changes in the genetic structure of Brown Tsaiya duck selected for feeding efficiency by microsatellite markers

  • Yi-Ying Chang (ILan Branch, Livestock Research Institute, Council of Agriculture) ;
  • Hsiu-Chou Liu (ILan Branch, Livestock Research Institute, Council of Agriculture) ;
  • Chih-Feng Chen (Department of Animal Science, National Chung Hsing University)
  • 투고 : 2022.05.27
  • 심사 : 2022.09.12
  • 발행 : 2023.03.01

초록

Objective: Few studies have genetically monitored chickens over time, and no research has been conducted on ducks. To ensure the sustainable management of key duck breeds, we used microsatellite markers to monitor Brown Tsaiya ducks over time genetically. Methods: The second, fourth, sixth to eighth generations of the Brown Tsaiya duck selected for feeding efficiency and control lines were included in this study to investigate the genetic variations, effective population size, population structure and the differentiation between populations over time with 11 microsatellite markers derived from Brown Tsaiya duck. Results: The results showed there were a slight decrease in the genetic variations and an increase in within-population inbreeding coefficient (FIS) in both lines, but no consistent increase in FIS was observed in each line. The effective population size in the second and eighth generations was 27.2 for the selected line and 23.9 for the control line. The change in allele richness showed a downward trend over time, and the selected line was slightly lower than the control line in each generation. The number of private alleles (Np) in the selected line were higher than in the control line. Moderate differentiation was observed between the second and eighth generations in the selected line (FST = 0.0510) and the control line (FST = 0.0606). Overall, differentiation tended to increase with each generation, but genetic variation and structure did not change considerably after six generations in the two lines. Conclusion: This study provides a reference for poultry conservation and helps to implement cross-generation genetic monitoring and breeding plans in other duck breeds or lines to promote sustainable management.

키워드

과제정보

We would like to thank the staff members of the Ilan Branch of the Livestock Research Institute of the Council of Agriculture for their assistance in the feeding and care of the animals. We also would like to acknowledge the National Center for Genome Medicine of the National Science Council of Taiwan for their technical support with the microsatellite genotyping.

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