Outcrossing and selection of improved guinea pigs from the Cajamarca region to produce superior offspring with high indexes of genetic merit

Authors

  • José Mantilla Facultad de Ingeniería en Ciencias Pecuarias, Universidad Nacional de Cajamarca, Peru
  • Eduar Valdez Facultad de Ingeniería en Ciencias Pecuarias, Universidad Nacional de Cajamarca, Peru
  • Joe Mantilla Facultad de Ingeniería en Ciencias Pecuarias, Universidad Nacional de Cajamarca, Peru
  • Manuel Paredes Facultad de Ingeniería en Ciencias Pecuarias, Universidad Nacional de Cajamarca, Peru https://orcid.org/0000-0002-4717-3393
  • Arif Mustafa McGill University, Macdonald Campus, St-Ann-De-Bellevue, QC, Canada

DOI:

https://doi.org/10.15381/rivep.v33i5.23787

Keywords:

outcrossing, genetic merit, selection, male guinea pigs

Abstract

The study aimed to establish a practice of genetic improvement of guinea pigs based on outcrossing and selection by genetic merit at the Superior Genetics Production Centre (CENPROGEN-SUP), located in the Condebamba valley, Cajamarca region, Peru. The parents of the guinea pigs evaluated came from the inter-Andean valleys of Cajamarca (FICP guinea pigs) and Condebamba (Mangallana guinea pigs and Cholocal guinea pigs). The growth of the offspring of the four crosses was evaluated under the same management and feeding conditions. A total of 80 recently weaned crossbred male guinea pigs (outcross) and selected from the crosses of Mangallana males with pure FICP females (MFp), Mangallana males with crossbred FICP females (MFc), pure FICP males with Cholocal females (FpC) and FICP males crossed with Mangallana females (FcM) were used in the study. In general, the MFp cross obtained the highest average weight at weaning (352.1 g), weight gain (16.7 g/day), body length (36.3 cm) and chest circumference (24.9 cm) at 70 days of age, followed by the MFc cross. There were no differences in feed conversion between groups. It is concluded that outcrossing between superior breeders and the subsequent selection of their offspring for traits of economic importance allows obtaining offspring of genetically superior crossbred males.

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Published

2022-10-27

Issue

Vol. 33 No. 5 (2022)

Section

Artículos Primarios

License

Copyright (c) 2022 José Mantilla, Eduar Valdez, Joe Mantilla, Manuel Paredes, Arif Mustafa

Creative Commons License

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

AUTHORS RETAIN THEIR RIGHTS:

a. Authors retain their trade mark rights and patent, and also on any process or procedure described in the article.

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

Mantilla, J., Valdez, E., Mantilla, J., Paredes, M., & Mustafa, A. (2022). Outcrossing and selection of improved guinea pigs from the Cajamarca region to produce superior offspring with high indexes of genetic merit . Revista De Investigaciones Veterinarias Del Perú, 33(5), e23787. https://doi.org/10.15381/rivep.v33i5.23787