Generation interval and effective size of polled Tabapuã of the state of Bahia

Authors

  • Lorena Mirelle Santos Muniz
  • Ana Carla Borges Barbosa
  • Diego Pagung Ambrosini
  • Aracele Prates de Oliveira
  • Laaina de Andrade Souza
  • Carlos Henrique Mendes Malhado
  • Paulo Luiz Souza Carneiro
  • Raimundo Martins Filho

DOI:

Keywords:

population structure, gametic passages, effective size

Abstract

The aim of this study was to estimate the effective size and generation interval in Tabapuã state of Bahia. Pedigree data were used to breed animals Tabapuã provided by the Brazilian Association of Zebu Breeders (ABCZ). The data file consisted of 30,202 observations between the years 1964 to 2006. Analyses were performed using the endogenous program. The ranger for the four generations of passages gametes were 7.44 ± 0.27 years (Father-Son), 7.80 ± 0.06 years (Father-Daughter), 6.54 ± 0.25 years (Father-Son), 7.80 ± 0.06 years (Father-Daughter), 6.54 ± 0.25 years (Mother-Son ), 6.83 ± 0.05 years (Mother-Daughter), with an average interval of 7.30 ± 0.04 years. The average generation interval of Tabapuã what was considered high can cause a decrease of annual genetic gain. The effective population size peaked in the period 1982-1988 with a value of 150 animals. From this period there was a decline and a small rise to the period of 2000, wich indicates the conservation and expansion of livestock.

Published

2015-09-17

Issue

Section

Outros

How to Cite

Generation interval and effective size of polled Tabapuã of the state of Bahia. (2015). Pubvet, 5(36). https://ojs.pubvet.com.br/index.php/revista/article/view/2172

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