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Comparative effectiveness of various methods of commercial crossing.


, : Comparative effectiveness of various methods of commercial crossing.. Svinovodstvo, 16: 4, 31-32

At a state farm in Leningrad Province, Large White, Breitov, Urzhum and Landrace boars were used on 16 sow groups consisting of Large Whites and their 2-, 3- and 4-breed crosses with these breeds; purebred L.W.s served as controls. In general the conception rates, litter size, milk production and birth weight of piglings were greater for the crossbreds than for the purebreds.

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