The use of blood protein polymorphism for determining the genetic distance between the Moravian warm-blooded horse and the Czech warm-blooded and Trakehner horses Stanovení rozdílnosti genofondu moravského teplokrevníka od českého teplokrevníka a trakénského koně na základě genetického polymorfismu

In the present study the genetic relationship between 3 breeds was investigated in 3 groups of stallions (Czech warm-blooded horse, n = 48; Trakehner horse, n = 13; Moravian warm-blooded horse, n = 25). A total of 17 gene- tic polymorphism markers (10 protein and enzyme loci, 7 blood groups) were investigated in 62 alleles. Based on the estimated allele frequencies the populations were characterised for their genetic variability on the basis of heterozygosity (H), number of alleles (na) and genetic distances (D) between the breeds. The degree of heterozygosity was as follows: Czech warm- blooded horse 0.367, Trakehner horse 0.319, Moravian warm-blood horse 0.353. The closest genetic relationship was found between the Czech warm-blooded and the Trakehner horses D = 0.027; between the Czech warm-blooded and Moravian warm-blooded horse the genetic relationship was more distant D = 0.076 while the most distant genetic relationship was observed between the Trakehner and Moravian warm-blooded horses D = 0.102.