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Home » Publications » Journal of Animal Science

Abstract

 

This article in JAS

  1. Vol. 88 No. 4, p. 1267-1275
     
    Received: July 07, 2009
    Accepted: Dec 11, 2009
    Published: December 4, 2014


    2 Corresponding author(s): nagy.istvan@ke.hu
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doi:10.2527/jas.2009-2273

Genetic diversity and population structure of the synthetic Pannon White rabbit revealed by pedigree analyses1

  1. I. Nagy 2,
  2. I. Curik†,
  3. I. Radnai*,
  4. I. Cervantes‡,
  5. P. Gyovai*,
  6. R. Baumung§,
  7. J. Farkas# and
  8. Z. Szendrő*
  1. Faculty of Animal Science, Kaposvár University, 7400 Kaposvár, Hungary;
    Department of Animal Science, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, Croatia;
    Department of Animal Production, Faculty of Veterinary Medicine, University Complutense of Madrid, Avda. Puerta del Hierro s/n, E28040 Madrid, Spain;
    BOKU–University of Natural Resources and Applied Life Sciences Vienna, A1180 Vienna, Austria; and
    Faculty of Economic Science, Kaposvár University, 7400 Kaposvár, Hungary

ABSTRACT

ABSTRACT

Demographic history, current status, and efficiency of the mating strategy were analyzed using the pedigree of Pannon White (PW) rabbits born between 1992 and 2007. Potential accumulation of detrimental effects and loss of genetic diversity were also considered. Calculations and estimates were done most often for rabbits born in 2007, whereas other reference populations (REFPOPXXXX) were specified explicitly. The pedigree contained 4,749 individuals and 580 founders, and its completeness was 82.1% up to 10 and 94.5% up to 5 generations, respectively. Generation intervals through different pathways averaged 1.2 yr. When adjusted to the pedigree completeness, the amount of inbreeding (Fi) of rabbits was comparable (5.54%) with that of other livestock populations, whereas the 10 (30) founders contributing the most to inbreeding explained a large part of the population inbreeding [i.e., 42.24% (73.18%)]. The ancestral inbreeding coefficient of REFPOP2004 (10.67%) was one-half that of REFPOP2007 (20.66%), showing its strong dependence on pedigree length. Family variance, inbreeding, and realized effective population size were 84.18 (REFPOP2006; this variable could not be calculated for the last year examined), 37.19, and 91.08, respectively. The effective numbers of ancestors, founders, and founder genomes were 48, 26, and 7.33, respectively. Although the circular mating scheme applied was generally effective, the large accumulated reduction in genetic variability indicates the need to revise and improve the current breeding strategy.

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