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    • The effect of age at the first mating and herd size on the lifetime productivity of sows 

      Babot Gaspa, Daniel; Chavez, Eduardo R.; Noguera Jiménez, José Luis (Institut national de la recherche agronomique (França)EDP Sciences, 2003)
      The effect of age at the first mating and herd size were evaluated in the reference Spanish Databank (BDporc) of 37 698 sows born between 1991 and 1995 and with individual lifetime records. The data included dates of births ...