Parameter und Trends der Stutbuchaufnahme des Mecklenburger Warmblut Pferdes

Abstract. Title of the paper: Parameters and trends of mare inspections of Mecklenburger Warmblut Horse
Genetic and phenotypic parameters and genetic trends were estimated for traits of mare inspections of Mecklen-burger Warmblut by means of REML. The data were recorded at mare inspections from 1991 to 2002 and included evolution data of 3654 mares. Total pedigree size was 9073 animals. The number of observation per level of the factors place by date of evaluation was very variable and often sparse. Therefore, this factor was treated as random. Age and year of affiliation into the herdbook were treated as fixed effects in the BLUP model. Estimated heritabilities ranged from low (0.08) to medium (0.48) and estimates of genetic and phenotypic correlations were generally positive, some of them above 0.8. The pattern of correlation was very similar to literature values from the Hannoveraner breed with exception of the traits saddle position and rear limbs. The genetic trends were significantly positive for traits horse points, quality of conformation and total score. Genetic differences were significant between warm blood breeds and age classes. Influences of factors year, month, age and place were significant in the majority of traits.