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Work in Bulgaria, mainly at the Pig Breeding Research Institute at Shumen, is reviewed. The formation of a new breed, the Danube White, and of several commercial hybrid types (Shumen 1, Shumen 2, Pleven 1), evaluation and improvement of reproductive performance including AI, genetic progress in...

Slanev, S.; Benkov, M.; Petrov, P.
National Centre for Agrarian Sciences in Bulgaria, Sofia, Bulgaria
Zhivotnov"dni Nauki, 2001, 38, 1, pp 31-34