Variation acid suitability of physiological indicators of the glucose tolerance test for the indirectly evaluation of young bulls

The parameters of glucose tolerance test are suitable for an additional rec ommendation for the valuation of the breeding bulls before the start of tes t could be given. This show the variation, the genetic determination and th e mean correlations between physiological indicator and estimated breeding value by 0.40 to 0.50. The offspring's breeding value is suitable equivalen t examined physiological indicators. These relationships are affected by fa ctors such as experimental conditions, age and nutritional state of animals .