We all know that the lack of pigs perspiration system, sweat glands severely degraded, under adult pig fat thickness, not through sweating to dissipate the heat, mainly rely on breath, nose water evaporates, stretch the body on the ground and other limited distribution of heat, and By Eat less activity to reduce the heat, and the pig likes to lie a place with water and heat dissipation. High summer temperatures, the sows individual large, fat thickness, heat is difficult to distribute heat stress leading to sow feed intake, milk production can not meet the nutritional requirements of the body had to use nutrition for lactating sows back fat thin, decreased body condition. Can sow estrus ovulation, it can become pregnant even after breeding sow body condition associated with estrus to estrus body condition, conception to conception of body condition. So hot season delayed estrus, estrus rate. Tsai Kang-rich five monsoon mother sow desired plant polysaccharides, polyphenols, flavonoids, saponins and other active substances, polyphenols have the effect of heat stress; plant polysaccharides can provide the necessary nutrients sow; flavonoids promote ovulation estrus sow uterine repair; saponin able to sow detoxification detoxification, etc., sow a healthy body, which can promote sows weaning estrus, conception.