Evaluation of inbreeding and genetic variability of the Peruvian Paso Horse registered in Ecuador

Authors

  • Carlos Octavio Larrea Izurieta Carrera de Medicina Veterinaria, Escuela Superior Politécnica Agropecuaria de Manabí Manuel Félix López, Calceta, Ecuador https://orcid.org/0000-0002-9167-2456
  • Mayra Gómez Carpio Associazione Nazionale Allevatori Specie Bufalina, Caserta, Italia https://orcid.org/0000-0002-3426-2231
  • Vinzenzo Landi Departamento de Medicina Veterinaria, Universita degli Studi di Bari Aldo Moro, Bari, Italia https://orcid.org/0000-0003-1385-8439
  • Ernesto Antonio Hurtado Carrera de Medicina Veterinaria, Escuela Superior Politécnica Agropecuaria de Manabí Manuel Félix López, Calceta, Ecuador https://orcid.org/0000-0003-2574-1289
  • Jorge Ignacio Macías Andrade Carrera de Medicina Veterinaria, Escuela Superior Politécnica Agropecuaria de Manabí Manuel Félix López, Calceta, Ecuador https://orcid.org/0000-0002-1774-719X
  • Leila Estefanía Vera Loor Carrera de Medicina Veterinaria, Escuela Superior Politécnica Agropecuaria de Manabí Manuel Félix López, Calceta, Ecuador https://orcid.org/0000-0002-1760-3815
  • Edwin Lozada Rivadeneira Asociación Charolais del Ecuador, Macas, Ecuador
  • Luis Favian Cartuche Macas Universidad Estatal Amazónica Sede Lago Agrio, Nueva Loja, Ecuador https://orcid.org/0000-0003-3278-1238

DOI:

https://doi.org/10.15381/rivep.v33i5.21672

Keywords:

gait, ancestor, demography, increase in consanguinity, kinship, pedigree

Abstract

The Peruvian Paso Horse (CPP) is a breed with a four-stroke gait originating in Peru from the horses that arrived at the time of the conquest of America. The aim of this study was to know the level of inbreeding and the effect on genetic variability in the breed. In total, 8330 animals were analysed that included the population of CPP born in Ecuador and their Peruvian ancestry (PT) and two reference populations of animals born in Ecuador (PE) and born between 2008 and 2018 (PR). The average traced generations were 9.18 ± 3.89 (PT), 11.14 ± 2.23 (PE) and 12.83 ± 1.42 (PR) and the completeness of the pedigree was over 90% in the first, fourth and fifth generations of PT, PE and PR, respectively. Average generation interval of 8.72 ± 4.56 (PT), 8.79 ± 4.30 (PE) and 9.20 ± 4.61 (PR). Average individual consanguinity: 5.97% (PT), 6.83% (PE) and 8.11% (PR) and kinship relationship: 9.02% (PT), 10.56% (PE) and 11.56% (PR). Individual increase in consanguinity per year was 0.13% and per generation 1.13%. The effective size of the population was less than 50. The probabilities of origin of the genes were greater than one. The occurrence of loss of genetic variability due to the bottleneck effect and genetic drift is concluded.

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Published

2022-10-27

Issue

Vol. 33 No. 5 (2022)

Section

Artículos Primarios

License

Copyright (c) 2022 Carlos Octavio Larrea Izurieta, Mayra Gómez Carpio, Vinzenzo Landi, Ernesto Antonio Hurtado, Jorge Ignacio Macías Andrade, Leila Estefanía Vera Loor, Edwin Lozada Rivadeneira, Luis Favian Cartuche Macas

Creative Commons License

This work is licensed under a Creative Commons Attribution 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).

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How to Cite

Larrea Izurieta, C. O., Gómez Carpio, M., Landi, V., Hurtado, E. A., Macías Andrade, J. I., Vera Loor, L. E., Lozada Rivadeneira, E., & Cartuche Macas, L. F. (2022). Evaluation of inbreeding and genetic variability of the Peruvian Paso Horse registered in Ecuador. Revista De Investigaciones Veterinarias Del Perú, 33(5), e21672. https://doi.org/10.15381/rivep.v33i5.21672