There are three main possibilities to find out if an immunological trait has a genetic background : studies in twins, the demonstration of line and breed differences, and the results of selection experiments. All three methodological approaches were used in our studies. In our studies with mice, cattle, and pig it could be shown that the rate of… (More)
In a two-day selection experiment mice lines with high and low carbon clearance rate were established. The estimates of realized heritabilities are 0. 30 in the " high " line and 0. 25 in the " low " line. Correlated selection responses are discussed, especially spleen weight and tumor incidence.
The variability of the response of cattle lymphocytes to the mitogens PHA and Con A was tested in a dairy herd. Significant individual differences and variations due to the age of the animals appeared. Genetic differences in the response exist. Verfasser fand im grossen Masstab signifikante Abweichung in einem Schafbestand bei der Nachkommenschatf in der… (More)