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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

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

Since more than three decades hormones have been used for the synchronisation of ovulation in sows often combined with timed artificial insemination. This will be done without considering the oestrous behaviour. A selection with regard to symptoms of standing behaviour is not necessary. Regarding...

Author(s)
Fischer, K.; Wähner, M.
Publisher
Forschungsinstitut für die Biologie landwirtschaftlicher Nutztiere, Dummerstorf, Germany
Citation
Archiv für Tierzucht, 2003, 46, 6, pp 559-568
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

As part of a crossbreeding experiment, the combining ability of Belgian Landrace (BL) with German Landrace (GL) pigs was investigated on the basis of a simple cross and also matings between littermates from different sires. Heterologous mating (mating with boars of both breeds) or heterologous ...

Author(s)
Engelbrechten, M. von; Wassmuth, R.; Dzapo, V.; Reuter, H.
Citation
Zuchtungskunde, 1973, 45, 3/4, pp 224-233
Abstract

Four groups each of 30 Swedish Landrace prepuberal gilts aged 5-61/2 mth were given single injections of 400 IU PMS+200 IU HCG and 4 groups served as controls. Synchronised oestrus was induced 3-5 days later in 93-100% of treated gilts, and 86-100% showed oestrus again in the following 2 cycles....

Author(s)
Schilling, E.; Cerne, F.; Minar, M.
Citation
Deutsche Tierarztliche Wochenschrift, 1971, 78, 5, pp 149-153

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