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Abstract

The first semen production of 29 young genomic Holstein bulls was analyzed in a continuous spermatological screening. Bulls were housed under identical conditions at the RBB AI stud in Brandenburg, Germany. With most of the bulls a production of high quality frozen semen was possible from an age of ...

Author(s)
Osmers, J. H.; Herrmann, C.
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2017, 89, 1, pp 9-21
Abstract

The efficacy of a protocol for the synchronization of ovulation followed by timed AI (Ovsynch) was compared with a reproductive protocol based on the results of rectal palpation. Cows in the Ovsynch group (N=366) were treated between 61 and 69 days postpartum (d.p.p.) with 0.02 mg Buserelin...

Author(s)
Wittke, M. S.
Publisher
Freie Universität Berlin, Berlin, Germany
Citation
Anwendung des Ovsynch-Programms in einer Milchviehherde: Einflüsse auf die Konzeption und Vergleich mit einem Prostaglandin F2α-Programm, 2002, pp 196 pp.
Abstract

Analysis of a representative sample of 200 bulls annually between 1950 and 1963 to investigate the effect of A.I. on the composition of the young bull population showed a reduction in the number of licenced bulls in 1963 to a third of the number in 1950 and a corresponding increase in the son:...

Author(s)
FLADE, D.
Citation
Archiv für Tierzucht, 1965, 8, pp 293-304
Abstract

In 1963 in Brandenburg the percentage of Black Pied Lowland ♀♀ which was artificially inseminated had increased to 81.1 from 0.2 in 1948; 54.5% of herdbook cows were inseminated. In 1963 only 2% of the bulls were inbred; the av. inbreeding coefficient in the bull population was 0.42% v. 0.54% in...

Author(s)
FLADE, D.
Publisher
Trento, 1964.,
Citation
5th International Congress Animal Reproduction A.I., 1964., 1964, 4, pp 547-551