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Abstract

The aim of this study was the determination of genetical and environmental factors that affect the occurrence of aberrant spermatozoa. The evaluation comprised 1,543 ejaculates collected from 57 boars representing BHZP 77 (Piétrain line db.77 ®), German Large White, German Landrace and Piétrain....

Author(s)
Jansen, S.; Sharifi, A. R.; Knorr, C.; Wiedemann, I.
Publisher
Eugen Ulmer KG, Stuttgart, Germany
Citation
Züchtungskunde, 2017, 89, 4, pp 300-310
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

Spermatological investigations are necessary to show whether young boars are qualified for the use in artificial insemination centers or not. In this study, selected spematological values (ejaculate volume, concentration of spermatozoa, spermatic motility, total number of spermatozoa per ejaculate, ...

Author(s)
Freick, M.; Enge, A.; Hallfarth, G.; Fleischer, W.
Publisher
Schlütersche Verlagsgesellschaft mbH & Co. KG, Hannover, Germany
Citation
Praktische Tierarzt, 2007, 88, 6, pp 452-460
Abstract

The height and body length of 456 boars of different breeds, from 3 A.I. centers, with ages ranging from 8 to 98 months were measured. The mean testis to snout length of all boars was 195.4±12.5 cm with a range of 54 cm. The withers height (91.6±6.4 cm) ranged from 76 to 107 cm and the shoulder...

Author(s)
Rohrmann, S.; Hoy, S.
Publisher
Verlag Eugen Ulmer GmbH, Stuttgart, Germany
Citation
Züchtungskunde, 2004, 76, 4, pp 262-271
Abstract

The objective of the following analysis was to test the efficiency of the selection procedure against congenital anomalies in AI-boars of Bavaria. This selection index was in use since 1986. The investigation was based on records of 47 323 litters from 351 German Landrace (GL) boars and 1134...

Author(s)
Beissner, B.; Hamann, H.; Distl, O.
Publisher
Verlag Eugen Ulmer GmbH, Stuttgart, Germany
Citation
Züchtungskunde, 2003, 75, 2, pp 101-114
Abstract

Hereditary defects in pigs were analysed in relation to genetic and environmental factors from data obtained at the GFS Ascheberg AI Station in North Rhine/Westfalia, Germany for the years 1999-2002. Data from 7717 litters on 1115 pig farms, representing a total of 89 051 piglets, were examined....

Author(s)
Freitag, M.; Klein, D.; Südwestfalen, F.
Publisher
Landwirtschaftsverlag GmbH, Münster-Hiltrup, Germany
Citation
SUS - Schweinezucht und Schweinemast, 2003, No.4, pp 36-39
Abstract

This paper refers to AI in pigs. In the year 2000, 4.5 million inseminations were carried out, compared with approximately 2.6 million in 1995 and 1.2 million in 1990. There are currently 34 pig AI stations, controlled by 23 breeding organizations. Almost all inseminations are carried out by...

Author(s)
Leiding, C.
Publisher
Besamungsverein Neustadt a.d. Aisch e.V., Neustadt a.d. Aisch, Germany
Citation
Zuchtwahl und Besamung, 2002, No.147, pp 62-67
Abstract

In the German Federal Republic, pig numbers in Dec. 1986 (24 503 000) were 0.9% higher than in Dec. 1985. Of sows that were performance-tested in 1986, 25 250 000 were German Landraces, and they averaged 20.8 piglets born per sow per year and 19.3 reared; corresponding figures for Piétrains were 9...

Publisher
Arbeitsgemeinschaft Deutscher Schweineerzeuger e.V., Bonn, German Federal Republic
Citation
Zahlen aus der Deutschen Schweineproduktion 1986., 1987, pp 120 pp.
Abstract

In the German Federal Republic, pig numbers in Dec. 1985 (24 282 000) were 2.8% higher than in Dec. 1984. Of sows that were performance tested in 1985, 26 370 were German Landraces, and they averaged 20.6 piglets born per sow per yr and 19.0 reared; corresponding figures for Piétrains were 8261,...

Publisher
Arbeitsgemeinschaft Deutscher Schweineerzeuger e.V., Bonn, German Federal Republic
Citation
Zahlen aus der Deutschen Schweineproduktion 1985., 1986, pp 104pp.

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