By then, the number of pigs in the Taitung station had risen to 15 males and 45 females: these were "generation zero" of this protected breed. Random breeding techniques were used: they were allowed to breed freely, averaging two litters a year for each sow, with about six to eight piglets per litter.
這時，台東場裡的保種頭數已經增加到 15 公 45 母，是為「第零代保種種豬」，用逢機配種的方式，任由牠們自尋配偶，平均每隻母豬一年可生 2 胎，每胎大約產下 6 至 8 頭仔豬。