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The authors' objective was to introduce a dynamic voluntary waiting period in a Holstein-Friesian dairy farm and making interventions in order to decrease the days open from calving to conception and the Al index, and to increase the first service conception rate from calving until rebreeding and...

Szelényi, Z.; Bajcsy, Á. C.; Horváth, A.; Simon, J.; Szenci, O.
Magyar Mezógazdaság KFT, Budapest, Hungary
Magyar Állatorvosok Lapja, 2010, 132, 9, pp 529-536