Genetic parameters for growth and reproduction in Simmental cattle from pedigree and  genomic relationship

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Genetic parameters for growth and reproduction in Simmental cattle from pedigree and genomic relationship

Authors
  • Amaya-Martínez, Adonai Alejandro1
  • Martínez S., Rodrigo2
  • Cerón-Muñoz, Mario Fernando1
Type
Published Article
Journal
Revista Mvz Córdoba
Publisher
Universidad de Cordoba
Publication Date
Feb 25, 2020
Volume
1
Issue
25
Identifiers
DOI: 10.21897/rmvz.1520
Source
MyScienceWork
Keywords
License
Green

Abstract

I, Objective. To estimate genetic parameters for weight at eight months of age (W8M), age at first calving (AFC) and first calving interval (FCI) using pedigree and genomic relationship. Materials and methods. Phenotypic data on 481, 3063 and 1098 animals for W8M, AFC and FCI were used, respectively. The genomic information came from a population of 718 genotyped animals with a density chip of 30,106 single nucleotide polymorphism markers (SNP). Univariate and bivariate models were used under the conventional (BLUP) and single step genomic best linear unbiased predictor (ssGBLUP) methodologies. Results. The heritabilities for W8M, AFC and FCI ranged from 0.25 to 0.26, from 0.20 to 0.22 and from 0.04 to 0.08, respectively. The AFC and FCI models under ssGBLUP slightly decreased the error and increased the additive genetic variance, respectively. Conclusions. The inclusion of genomic information slightly increases the accuracy of the genetic estimates in this population. However, a larger amount of genotyped animals and with a higher genetic relationship connectivity would allow breeders to increase the potential of the ssGBLUP methodology in Colombian Simmental cattle.

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