False pregnancy in sows and its causes

Sows are not pregnant after mating, but their bellies are getting bigger day by day, and their breasts are also gradually expanding. Later, they can even squeeze out some clear milk, but do not give birth, and the phenomenon that the belly and breasts gradually retract is called false pregnancy.

Causes of false pregnancy in sows: first, due to early embryonic death and absorption, and the corpus luteum of pregnancy did not disappear, resulting in progesterone continued secretion, as if pregnancy is still continuing. The second is due to malnutrition, resulting in sow endocrine disorder, sow estrous cycle delayed or stopped.