Sire referencing scheme for a dispersed genetic nucleus of alpacas (Vicugna pacos) Huacaya in the Pasco region, Peru

Authors

  • Eliet Amanca H. Departamento Académico de Producción Animal, Universidad Nacional Agraria la Molina (UNALM), Lima
  • Gustavo Gutiérrez R. Departamento Académico de Producción Animal, Universidad Nacional Agraria la Molina (UNALM), Lima
  • Jorge Calderón V. Departamento Académico de Producción Animal, Universidad Nacional Agraria la Molina (UNALM), Lima
  • Vanerlei Roso M. GenSys Consultorios Asociados, Porto Alegre
  • Jorge Mendoza D. Facultades y Programas de Investigación, Universidad Nacional Agraria la Molina, Lima

DOI:

https://doi.org/10.15381/rivep.v29i3.14840

Keywords:

alpaca, sire reference, dispersed nucleus, genetic link

Abstract

The alpaca herds in Pasco region, Peru, have few known genetic links, so the breeding value of sires from different herds cannot be compared since environmental effects can mask the genetic differences among them. The aim of the study was to evaluate a sire referencing scheme for a dispersed genetic nucleus of Huacaya alpacas in Pasco. Data was collected to evaluate the organizational capacity of the breeders and characterize the population structure of six herds belonging to the nucleus in 2016. The size of the nucleus was calculated based on the need for annual replacement of sires. The genealogy was simulated for three scenarios of sire reference schemes (SRS) with 3, 6 and 9 males mating 10, 20 and 30% of dams in the nucleus per generation respectively. The contemporary groups (CG) were determined by herd-year for three generations. Finally, the degree of the genetic link was calculated using the method of total number of direct genetic links (TDGL) among CG. Results showed that the evaluated herds have a central and open genetic structure, with a low flow of animals between the nucleus and the based group. The minimum size of the dispersed genetic nucleus was 747 dams and 41 males. The three SRS scenarios in the dispersed genetic nucleus showed a high degree of genetic link in three generations, ranged from 98.20 to 100% of TDGL.

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Published

2018-09-06

Issue

Vol. 29 No. 3 (2018)

Section

Artículos Primarios

License

Copyright (c) 2018 Eliet Amanca H., Gustavo Gutiérrez R., Jorge Calderón V., Vanerlei Roso M., Jorge Mendoza D.

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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

AUTHORS RETAIN THEIR RIGHTS:

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b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista de Investigaciones Veterinarias del Perú (RIVEP).

c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating the source of publication (the originator of the work, journal, volume, number and date).

How to Cite

Amanca H., E., Gutiérrez R., G., Calderón V., J., Roso M., V., & Mendoza D., J. (2018). Sire referencing scheme for a dispersed genetic nucleus of alpacas (Vicugna pacos) Huacaya in the Pasco region, Peru. Revista De Investigaciones Veterinarias Del Perú, 29(3), 894-907. https://doi.org/10.15381/rivep.v29i3.14840