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In line with the sheep breeding programme in the subsidiaries of Polish Agricultural Property Agency (PAPA) dated 18th March 2004, twenty German Mutton Merino (GMM) rams were imported from Germany to Poland in order to introduce the aforementioned programme’s ideas. The Polish Merino is kept in five subsidiaries of PAPA, i.e. Dobrzyniewo, Garzyn, Lubiana, Żołędnica and Żydowo. Each one introduced...
The research material consisted of 50 families of Polish Large White sows, raised in pedegree piggeries in the area of the activity of the Regional Animal Breeding Station in Olsztyn. Altogether, 988 sows and 2319 litters originating from them were subject to investigation. It was found out there was a significant differentiation in the reproductive utility of sows coming from sows family founders...
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