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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

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

This paper discusses the analysis of seasonal infertility in sows and its economic effects. Focus is given on the possible causes of seasonal infertility and its effects on litter size, artificial insemination success, reproductive disorders and culling of sows.

Author(s)
Hühn, U.; Leiding, C.
Publisher
Besamungsverein Neustadt a.d. Aisch e.V., Neustadt a.d. Aisch, Germany
Citation
Zuchtwahl und Besamung, 2012, No.168, pp 57-59
Abstract

Analysis of the reasons for culling of purchased gilts and 2. check-up studies on the percentage of animals fit for breeding following heat synchronization and artificial insemination over a period of 10 years (1999-2008). Basis: records of veterinary herd management service. Material and methods:...

Author(s)
Heurich, U.; Hühn, U.
Publisher
Schattauer GmbH, Stuttgart, Germany
Citation
Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere, 2010, 38, 4, pp 219-224
Abstract

The great demand for semen of high producing boars and the negative influences on sperm production like individuality, season and frequency of use require adjustments for stimulating and stabilizing sperm production. The vitamin-similar active substance L-carnitine with its function in the lipid...

Author(s)
Wähner, M.; Geyer, M.; Hallfarth, G.; Hühn, U.
Publisher
Verlag Eugen Ulmer GmbH, Stuttgart, Germany
Citation
Züchtungskunde, 2004, 76, 3, pp 196-207
Abstract

An account is given of the benefits of the induction and synchronization of oestrus and ovulation in sows and of artificial insemination on litter size, annual piglet production and piglet viability, with special reference to conditions in Germany. The housing of synchronized sows in large groups...

Author(s)
Hühn, U.
Publisher
Besamungsverein Neustadt a.d. Aisch e.V., Neustadt a.d. Aisch, Germany
Citation
Zuchtwahl und Besamung, 2001, No. 145, pp 58-61
Abstract

A review of the induction of oestrus with gonadotropic hormones at the time of weaning, the synchronization of oestrus in groups of gilts, and the synchronization of ovulation for artificial insemination.

Author(s)
Kanitz, W.; Hühn, U.
Citation
Tierärztliche Umschau, 1999, 54, 4, pp 208-214
Abstract

Data were analysed on the results of 25 215 first inseminations carried out over a 3-year period at 13 farms, the traits recorded being pregnancy rate, litter size and the number of piglets born per 100 first inseminations. Environmental temperature and hours of sunlight daily were recorded in the...

Author(s)
Hühn, U.; Henze, A.; Jurk, R.
Citation
Züchtungskunde, 1995, 67, 4, pp 305-316
Abstract

Author(s)
Hühn, U.; König, I.
Citation
Monatshefte für Veterinärmedizin, 1990, 45, 4, pp 115-117
Abstract

The effect of puerperal disorders on subsequent reproductive performance was investigated on an intensive farm with 2000 sows and gilts subjected to synchronized ovulation and term-orientated insemination. In each of the 258 affected animals, puerperal disease led to a reduction in the number of...

Author(s)
Roost, H.; Kuntzsch, G.; Berber, H.; Bley, G.; Hühn, U.
Citation
Monatshefte für Veterinärmedizin, 1988, 43, 6, pp 197-200

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