Sows intaked low nutrition level diet(0.91g nitrogen/ BW075/d and 0.13Mcal DE/BW?S/d), enhanced litter size, decreased number born alive, weight of piglet born, weaning survive rate and subsequent productive performance.

• 母猪妊娠期采食低营养水平的日粮(0.；91g氮/BW~(0