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Genetic parameters for productive and reproductive traits of sows in multiplier farms

by Hyung-Joo Kim
Doctoral thesis
Date of Examination:2001-07-12
Date of issue:2001-08-22
Advisor:Prof. Dr. Peter Glodek
Referee:Prof. Dr. Peter Glodek
Referee:Prof. Dr. Horst Brandt
crossref-logoPersistent Address: http://dx.doi.org/10.53846/goediss-1851

 

 

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Abstract

English

Reproductive performance is one of the important components of sow productivity, and is recognised as a key factor affecting the efficiency and economy of the pig industry. In particular, this leads to optimisation of the capacity of multiplier farms in crossbreeding programmes. Economic value of reproductive performance is expected to increase in the future. So, in order to combine both productive and reproductive performances of sows optimally in selection programmes, accurate estimates of variance and covariance components for all traits measured are necessary. The objectives of this study were to estimate genetic parameters for reproductive performance along with growth and backfat measures of sows, to use them for constructing optimised selection criteria for dam line sows and boars, and to develop practical procedures for breeding value estimation and selection of sows and boars in dam lines.
Keywords: genetic parameters; variance; covariance components; productive; reproductive traits; sows

Other Languages

Die Reproduktionsleistung ist einer der wichtigen Bestandteile der Sauenproduktivität und ist als ein Schlüsselfaktor anerkannt, der die Effizienz und Wirtschaftlichkeit der Schweineindustrie beeinflusst. Besonders führt dies dazu, die Kapazität von Vermehrungsbetrieben in Kreuzungsprogrammen zu optimieren. Es wird erwartet, dass der ökonomische Wert der Reproduktionsleistung zukünftig zunimmt. Um sowohl Produktions- als auch Reproduktionsleistung von Sauen optimal in Selektionsprogrammen zu kombinieren, sind genaue Schätzungen von Varianz- und Kovarianzkomponenten für alle gemessenen Merkmale notwendig.
 

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