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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

Most of the data included in this publication refer to the period prior to German unification in Oct. 1990. A small appendix is devoted to details of the breeding of herdbook cattle, artificial insemination, performance testing and breeding value estimation in the former German Democratic Republic. ...

Publisher
Arbeitsgemeinschaft Deutscher Rinderzüchter, Bonn, Germany
Citation
Rinderproduktion in der Bundesrepublik Deutschland 1990, 1991, pp 225pp.
Abstract

Breeds, performance and progeny testing, and AI of pigs in the former German Democratic Republic are briefly described.

Citation
Kleinviehzüchter, 1991, 39, 2, pp 46-47
Abstract

In 1989, in the German Democratic Republic, 86.9% of sows were inseminated. The av. CR was 80.7%, the number of liveborn piglets per litter averaged 10.48, and the number of piglets born alive per 100 inseminations averaged 846 vs. 80.4%, 10. 36 and 834 resp. in 1988. Data are tabulated by district.

Author(s)
Keil, H. W.; Henze, A.
Citation
Tierzucht, 1990, 44, 7, pp 333-335
Abstract

In 1986, in the German Democratic Republic, 404 106 ewes were inseminated, representing 62.5% of the total population vs. 356 821 ewes, representing 55.0% of the total, in 1980. The CR was 62.5% in 1986 vs. 60.4% in 1980. Research on the effects of semen diluents, duration of semen storage, semen...

Author(s)
Peter, W.; Nehring, H.; Ueckert, H.
Citation
Tierzucht, 1988, 42, 7, pp 316-319
Abstract

Work carried out since 1958 in the German Democratic Republic on AI, the freezing and storage of bull, ram and boar semen and embryo transfer in cattle is summarised and discussed.

Author(s)
Peter, W.
Citation
Tierzucht, 1988, 42, 12, pp 561-564
Abstract

Of 1 803 600 sows inseminated in the German Democratic Republic in 1986, 80.4% conceived, and the number of liveborn piglets per sow farrowing and mated averaged 10.26 and 8.25 resp. Of 304 536 gilts and 648 393 sows with synchronized ovulation and inseminated at a predetermined date, 75.4 and...

Author(s)
König, I.; Kaiser, H.
Citation
Tierzucht, 1987, 41, 8, pp 362-364
Abstract

In 1985, in the German Democratic Republic, 1 913 706 sow inseminations were carried out, of which 1 787 477 were 1st inseminations; the number of inseminated ♀♀ represented 81.3% of the total population. The av. CR was 79.9%, the number of liveborn piglets per litter averaged 10.20 and the number...

Author(s)
Keil, H.W.; Sondermann, R.; Hühn, U.; Henze, A.
Citation
Tierzucht, 1986, 40, 6, pp 260-262
Abstract

An account is given of the development since 1978 of artificial insemination of pigs at a large pig breeding unit (with a current population of>180 000, of which 9500 are breeding sows) in the German Democratic Republic. In 1985, for the 86.93% of ♀♀ which were inseminated, overall CR was 78.8%,...

Author(s)
Reinhold, J.; Kürbs, R.; Gutbier, B.
Citation
Tierzucht, 1986, 40, 6, pp 244-246
Abstract

Artificial insemination of sheep began in 1956, when 756 ewes were inseminated with semen from 6 rams. In 1985, 17 980 ewes were inseminated (representing 81.3% of the total number of ♀♀), using semen from 93 rams; semen from progeny-tested rams was used for 91.6% of inseminations. The number of...

Author(s)
Becker, K.; Liebscher, D.; Hennig, H.
Citation
Tierzucht, 1986, 40, 9, pp 422-425

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