Genetische Analyse der Population des Hinterwälder Rindes
Abstract. Title of the paper: Genetic analysis of the population of Hinterwald cattle
Since 1994 the Hinterwald population is devided into one of dairy cows and one of suckling cows. The bulls are available to both subpopulations.
By means of herdbook records of the year of 2002 there were gained 79 bulls, 698 dairy cows and 517 suckling cows. Considering five generations of ancestors the subpopulations have been investigated with regard to genetic contribution, generation intervals, and circumstances of relationship and inbreeding.
The average percentage of Hinterwald blood in the current population amounts to 97 %. The genetic portions of other breeds are low and mostly originating from Vorderwald cattle. The mean generation interval (parents–current animals) is about 5 years. Between the sires and current animals it is shorter (about 4 years) than between the dams and the current animals (about 7 years). The average coefficient of relationship among the bulls is the highest (3.7 %) compared to the dairy cows (2.2 %) and the suckling cows (0.9 %). The mean degree of inbreeding is 1.2 up to 1.3 %, and 37 % of the bulls, 57 % of the dairy cows and 74 % of the suckling cows are not inbred. The increase of inbreeding is rather low and doesn’t surmount 0.7 % in all subpopulations. Therefore it can be assumed that the Hinterwald cattle at present is not subjected to any danger of inbreeding.