At present,sow reproductive capacity defect result from tong anestrus and decreased live pigs born,and then open,abortion,underpriviled Rig,mummified fetus,embryonic mortality etc.

• 分析了造成母猪繁殖能力低的因素主要表现为乏情期长和产仔数低,其次是不孕,流产,产弱仔,产木乃伊胎及死胎等。