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Abstract

The spermatology reference laboratories located at the TiHo Hannover and IFN Schonow have been developing science-based quality control programs for boar studs for many years. In ongoing research projects funded by the FBF e. V. (Forderverein Biookonomieforschung), influencing factors on sperm...

Author(s)
Schulze, M.; Schäfer, J.; Jung, M.; Waberski, D.
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2017, 89, 1, pp 22-28
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

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

This article discusses the modification in the insemination and farrowing schedule of sows at every three-week interval to properly manage the litter and enhance farm hygiene and sanitation, along with the shortened lactation duration for sows. The advantages, benefits and disadvantages of the...

Author(s)
Hilgers, J.; Hühn, U.
Publisher
Besamungsverein Neustadt a.d. Aisch e.V., Neustadt a.d. Aisch, Germany
Citation
Zuchtwahl und Besamung, 2013, No.169, pp 56-59
Abstract

Genome-based selection may contribute to increasing potential breeding progress and further specialization of farms. In addition to a previous contribution to genome-based selection in dairy cattle, rapid changes in artificial insemination breeding programs and possible consequences from the...

Author(s)
Brade, W.
Publisher
Schlütersche Verlagsgesellschaft GmbH & Co. KG, Hannover, Germany
Citation
Praktische Tierarzt, 2013, 94, 2, pp 157...163
Abstract

Author(s)
Nyenhuis, M.; Kühlewind, J.
Publisher
DLV Deutscher Landwirtschaftsverlag Berlin GmbH, Berlin, Germany
Citation
Neue Landwirtschaft, 2012, No.11, pp 32-34
Abstract

The objective of the study was to investigate whether automatically measured rumination can be used to detect estrus in dairy cattle. In five farms, the cows were equipped with a microphone-based respactor system to continuously record (in blocks of 2 hours) ruminating activity. The analysed...

Author(s)
Reith, S.; Fengels, I.; St. Hoy
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2012, 84, 4, pp 281-292
Abstract

Pig breeding farms have lower production results due to high temperatures in summer since difficulties in pig reproduction may be observed due to stress caused by unfavourable environmental conditions. It was confirmed that certain substances can reduce stress and consequently enhance reproduction. ...

Author(s)
Petak, I.; Mrljak, V.; Milić, D.; Kiš, I.; Matijatko, V.
Publisher
Terra-Verlag GmbH, Konstanz, Germany
Citation
Tierärztliche Umschau, 2009, 64, 12, pp 541-547
Abstract

Controlled reproduction in small ruminants is an important economic factor. Of major interest is oestrus induction or synchronization as a prerequisite for timed insemination as well as the control of seasonality and increase of numbers of offspring which can be achieved by medication or taking...

Author(s)
Meinecke-Tillmann, S.; Meinecke, B.
Publisher
Schattauer GmbH, Stuttgart, Germany
Citation
Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere, 2008, 36, 2, pp 86-94
Abstract

The study investigated the effect of additional illumination prior to artificial insemination on the reproductive performance of sows and gilts. Additional illumination was provided after weaning of piglets (sows) and after the last administration of regumate (gilts). In gilts, additional...

Author(s)
Lau, H.
Publisher
Eugen Ulmer GmbH, Stuttgart, Germany
Citation
Züchtungskunde, 2008, 80, 3, pp 213-223

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