Abstract
Improvement of breed structure of cattle, that is improvement of their production performance and characteristics, as well as phenotype, is main task of centers for artificial insemination and expert services. During the period 1992 - 2000, in Republic of Serbia, 8 Montbeliard bulls were active in AI Centre Krnjaca. Bulls originated from Montbeliard heifers imported from France into Negotin region. Bulls were raised, exploited in AI Centre Krnjaca and tested on the territory of the Republic. Of total 8 bulls, 6 completed progeny testing and for 2 bulls test is ongoing. Testing was carried out by A control compared to Simmental bulls used and tested in identical conditions and under same criteria. Results of the test concerning milkiness are higher by 296 l, and lower by O,54% for milk fat. Exterior traits in average are increased with the exception of body mass that is in average lower by 16 kg.
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