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Abstract

Hofmann (1935) submitted a proposal, using a timed mating and farrowing system to program the reproductive dates in a sow herd and thus to direct the breeding and production cycle taut. In 1958 to 1964, the developed system of periodic farrowing was operated in Thuringia first farms successfully...

Author(s)
Hühn, U.; Wähner, M.
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2016, 88, 4, pp 268-281
Abstract

Activity was automatically measured in 2 h intervals with the neck mounted activity meter system Qwes HR (SCR, Israel) in 6 herds with Holstein Friesian cows and reference values for diurnal rhythm in the period 240 hr until 49 hr before artificial insemination (AI) were calculated for each cow....

Author(s)
Schröter, I.; Brandt, H. R.; Hoy, St.
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2016, 88, 2, pp 134-147
Abstract

A female calf of the breed German Holstein (GH) was spontaneously born on July 28, 2013 which was 35 days before the expected term of birth. The dam was a heifer when she got pregnant from the first insemination on November 23, 2012. Calving was without complications. The calf was fully viable and...

Author(s)
Reinartz, S.; Höltershinken, M.; Distl, O.
Publisher
Schlütersche Verlagsgesellschaft GmbH & Co. KG, Hannover, Germany
Citation
Berliner und Münchener Tierärztliche Wochenschrift, 2016, 129, 1/2, pp 82-87
Abstract

Protocols for synchronization of ovulation are widely adopted by the dairy industry to improve reproductive efficiency. It was the objective of this article to summarize three studies recently published that present valuable information for dairy practitioners. In the first study from Bisinotto et...

Author(s)
Borchardt, S.; Heuwieser, W.
Publisher
Terra-Verlag GmbH, Konstanz, Germany
Citation
Tierärztliche Umschau, 2015, 70, 11, pp 447-450
Abstract

In order to increase fertility in modern dairy farming, the interval between first insemination and conception should be as short as possible. Therefore, one approach is to diagnose non pregnant animals early to re-inseminate them as soon as possible. Commercial milk pregnancy assays are available...

Author(s)
Engelke, J.; Feldmann, M.; Gundling, N.; Gundelach, Y.; Egli, C.; Hoedemaker, M.; Piechotta, M.
Publisher
Schlütersche Verlagsgesellschaft GmbH & Co. KG, Hannover, Germany
Citation
Berliner und Münchener Tierärztliche Wochenschrift, 2015, 128, 9/10, pp 402-408
Abstract

Author(s)
Brade, W.
Publisher
DLG AgroFood medien gmbh, Bonn, Germany
Citation
Milchpraxis, 2015, 53, 3, pp 55-57
Abstract

Author(s)
Dodenhoff, J.; Müller, S.; Neues, B.
Publisher
Besamungsverein Neustadt a.d. Aisch e.V., Neustadt a.d. Aisch, Germany
Citation
Zuchtwahl und Besamung, 2015, No.173, pp 52-53
Abstract

Author(s)
Aumann, J.; Hofmann, J.
Publisher
Besamungsverein Neustadt a.d. Aisch e.V., Neustadt a.d. Aisch, Germany
Citation
Zuchtwahl und Besamung, 2015, No.173, pp 23-25
Abstract

The aim of this study was to evaluate plasma levels of LH (luteinizing hormone), heat symptoms and the quality of the corpora lutea after different synchronisation protocols in Brown-Swiss dairy cows under the objective of a fixed artificial insemination date (IATF). The study was performed within...

Author(s)
Moyano, J. C.; López, J. C.; Vargas, J.; Quinteros, O. R.; Marini, P. R.
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2015, 87, 4, pp 265-271
Abstract

Genomic selection is a highly innovative tool that expanded rapidly in today's dairy cattle breeding programmes. The proportion of inseminations with genomic proven bulls increased steadily but large regional differences can be observed. The superiority of such bulls is evident for all traits which ...

Author(s)
Thaller, G.; Rensing, S.; Segelke, D.
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2015, 87, 1, pp 27-36

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