Analysis of pedigree and conformation data to explain genetic variability of the horse breed Franches-Montagnes

Poncet, P A; Pfister, W; Muntwyler, J; Glowatzki-Mullis, M L; Gaillard, C (2006). Analysis of pedigree and conformation data to explain genetic variability of the horse breed Franches-Montagnes. Journal of animal breeding and genetics, 123(2), pp. 114-21. Berlin: Wiley-Blackwell 10.1111/j.1439-0388.2006.00569.x

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Franches-Montagnes is the only native horse breed in Switzerland, therefore special efforts should be made for ensuring its survival. The objectives of this study were to characterize the structure of this population as well as genetic variability with pedigree data, conformation traits and molecular markers. Studies were focused to clarify if this population is composed of a heavy- and a light-type subpopulation. Extended pedigree records of 3-year-old stallions (n = 68) and mares (n = 108) were available. Evaluations of body conformation traits as well as pedigree data and molecular markers did not support the two-subpopulation hypothesis. The generation interval ranged from 7.8 to 9.3 years. The complete generation equivalent was high (>12). The number of effective ancestors varied between 18.9 and 20.1, whereof 50% of the genetic variability was attributed to seven of them. Genetic contribution of Warmblood horses ranged from 36% to 42% and that of Coldblood horses from 4% to 6%. The average inbreeding coefficient reached 6%. Inbreeding effective population size was 114.5 when the average increase of the inbreeding coefficient per year since 1910 was taken. Our results suggest that bottleneck situations occurred because of selection of a small number of sire lines. Promotion of planned matings between parents that are less related is recommended in order to avoid a reduction of the genetic diversity.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > DVK - Clinical Research (discontinued)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Experimental Clinical Research
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Institute of Genetics

UniBE Contributor:

Glowatzki, Marie-Louise and Gaillard, Claude

ISSN:

0931-2668

Publisher:

Wiley-Blackwell

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:45

Last Modified:

03 Feb 2015 11:13

Publisher DOI:

10.1111/j.1439-0388.2006.00569.x

PubMed ID:

16533365

Web of Science ID:

000235937000007

URI:

https://boris.unibe.ch/id/eprint/18484 (FactScience: 629)

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