Inbreeding and genetic diversity loss of four cattle beef breeds in Slovakia

Abstract

Received: 2016-02-23   |   Accepted: 2016-04-21   |   Available online: 2016-05-30

dx.doi.org/10.15414/afz.2016.19.02.59-63

The aim of the paper was to evaluate trends in inbreeding and loss of genetic diversity in four beef cattle breeds (Blonde d´Aquitaine-BA, Charolais-CH, Limousine-LI, Simmental-SM). The highest ratio of inbred animals was found in the SM breed (63.6 %) and the lowest in the LI (14.1 %). The highest average inbreeding intensity we found in the SM, the lowest in the BA. The amount of genetic diversity in the reference population accounting for diversity loss due to genetic drift and unequal founder contributions was the highest in the SM (6.2 %), following the BA (3.5 %), LI (1.1 %) and CH (0.9 %). The proportion of genetic diversity lost due to genetic drift was higher in BA, CH, LI than the loss of genetic diversity due to unequal founder contribution.

Keywords: beef cattle, pedigree analysis, inbreeding, genetic diversity

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