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Abstract

An account is given of recent developments in the artificial insemination of cows, sow and ewes in the former German Democratic Republic. The reduction in the number of cattle AI stations from 28 to 8 and that of pig AI stations from 19 to 12 has led to new practices in semen transport, and the...

Author(s)
Peter, W.
Citation
Neue Landwirtschaft, 1992, No. 1, pp 65-67
Abstract

The new edition of this comprehensive textbook of artificial insemination has appeared seven years after publication of the first edition. The new edition has been thoroughly revised and updated, and is longer than its predecessor by 150 pages. Twenty-eight authors have contributed to the book,...

Publisher
Gustav Fischer Verlag, Jena, Germany
Citation
Künstliche Besamung bei Nutztieren., 1991, pp 738pp.
Abstract

Of 1 445 016 ewes in the former German Democratic Republic, 65 156 were inseminated in 1990 vs. 418 300 of 2 602 700 ewes in 1989. The sharp fall in the number of inseminations is attributed to financial and labour considerations. It is suggested that in view of the post-unification changes in...

Author(s)
Strittmatter, K.; Peter, W.
Citation
Tierzüchter, 1991, 43, 9, pp 379
Abstract

By means of laparotomy, 14 ewes were inseminated with frozen semen and 5 ewes with fresh semen by, ovariectomy 3 days after insemination revealed that 78.6 and 80% resp. of ewes had conceived. Of 20 ewes inseminated by the same method, 50% conceived, and the lambing rate of ewes lambing was 140%....

Author(s)
Nehring, H.; Reinhardt, P.; Fischer, P.; Peter, W.; Ehlert, F.
Citation
Monatshefte für Veterinärmedizin, 1989, 44, 17, pp 601-604
Abstract

For 131 sows inseminated with frozen semen in 1985, the CR was 39.7%, and the total number of piglets born per litter averaged 10.0, of which 9.5 were liveborn vs. 52.6%, 9.4 and 8.9 for 293 sows inseminated in 1984. An account is given of methods of freezing and thawing of semen, and of the...

Author(s)
Mudra, K.; Peter, W.; Wicke, I.
Citation
Tierzucht, 1988, 42, 7, pp 345-347
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

The paper examines the extent to which GDR piglet breeding units organized production on the basis of planned production cycle programmes in the period 1970-84. The analysis shows that production cycle programming increased at the same time as artificial insemination and the ability to manage...

Author(s)
Henze, A.; Peter, W.
Citation
Tierzucht, 1987, 41, 7, pp 319-322
Abstract

From 1977 to 1984, the number of inseminations carried out in the German Democratic Republic decreased from 2 724 900 to 2 615 500, while the 90- to 120-day NR rate increased from 52.1 to 57.1%. Over the same period, the av. age at 1st insemination increased from 558 to 638 days, av. age at 1st...

Author(s)
Peter, W.; Jenichen, W.
Citation
Monatshefte für Veterinärmedizin, 1986, 41, 6, pp 181-185
Abstract

Problems involved in the freezing and thawing of boar semen and the timing of insemination are discussed with reference to the literature and the authors' own work. Because of disappointing CRs and litter sizes compared with those when using fresh semen, only restricted use of frozen semen is...

Author(s)
Peter, W.; Kunze, C.
Citation
Tierärztliche Umschau, 1985, 40, 9, pp 701-703

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