Energy level is an important indicator of the nutritional value of gestating sows’ diets, and has an important impact on the embryonic growth and survival of gestating sows, as well as the reproductive performance of piglets at birth weight.Therefore, feeding diets with different energy levels to sows during pregnancy can directly affect the sow embryos. This article reviews the effects of the energy requirements, different energy levels and sources of pregnant sows on the reproductive performance of sows, in order to prov...
