Improved udder health by breeding

In recent years no significant progress in breeding for improved udder health has been achieved in the German dairy breeds despite of the respective genetic prerequisites. Problems in precise trait recording and complex genetic correlations impair genetic progress applying conventional selection schemes. Improved trait recording and use of information on the molecular background of genetic variability of the target traits mastitis and somatic cell count represent starting-points for an improved breeding on udder health. In the German Holstein population the possibility of selection on improved udder health by use of available indirect genetic marker could be exemplified. The detection of trait affecting gene variants is required to preserve valuable alleles with established effect on udder health within the dairy populations. Aside immunological mechanisms, the analysis of the genetic background of udder health should also comprise the investigation of specific non-immunological effects, e.g. udder morphology.

Vollversion deutsch