Effect of feeding level during rearing and mating strategy on performance of Swedish Yorkshire sows. 1. Growth, puberty and conception rate

alimentation backfat body weight cerdo ciclo estral conception conception rate cycle oestral feeding feeding level females femelle fertilidad fertilite fertility hembra madurez sexual niveau d'alimentation nivel alimenticio oestrous cycle performance de reproduction peso corporal plane of nutrition poids corporel porcin puberty reproductive performance reproductividad restricted feeding sexual maturity swine tocino dorsal