The invention discloses an accurate feeding method for pregnant pigs in a large pigsty. The method comprises the following steps: 1, conducting management in a
gestation period; 2, blending feed in the
gestation period; 3, feeding with feed in the
gestation period; 4, separating fat and thin pigs in different pigsties; 5, preparing feed in the
perinatal period; and 6, feeding feed in the
perinatal period. Compared with an existing pregnant pig feeding method, a one-time feeding method is adopted, individuals with poor body conditions conduct secondary
ingestion on residual feed, even if food grabbing occurs, it can be ensured that each pig can be full, adjustment and management of backfat are achieved, meanwhile, the hardware input cost is reduced, according to the method, the pigsty separating management is carried out according to the backfat condition of the pregnant pigs, the daily feeding amount is reasonably planned, so that the pregnant pigs are prevented from being too fat or too thin, feed supply with different contents of nutritional ingredients is implemented according to the
pregnancy requirements of the pregnant pigs in different periods, the dystocia rate of sows is reduced, and the newborn
vitality of piglets is improved.