1. Empty sows refers to sows that are pre-seeded after weaning. The level of feed nutrient levels and protein levels have important implications for the normal estrus of empty sows. 2. In order to supplement the loss of body weight during lactation, empty sows prior to breeding should be fed with enough lactating sows to restore body condition and promote development as soon as possible. 3, according to the body condition, too thin sows should be extra material, because the sows are too thin, body fat accumulation is not much, their growth can not meet, affect the normal heat, eventually leading to shorten the useful life. Causes and clinical symptoms of piglet edema 1. Cause: The edema disease of piglets is mainly caused by E. coli strains such as O2, O8, O118, O179, O141 and their toxins. In addition to this, the occurrence of the disease is also closely related to external stress factors: mainly early weaning, so that the intestinal micro-organisms drastically changed, reducing the resistance to disease; Second, feed, feeding methods or feeding environment Sudden changes in the long-term feeding of high-protein diets, simple or lack of feed vitamins, minerals, and disease prevention, castration and other stress factors can promote the occurrence of the disease. 2. Symptoms: Sudden onset, early onset of mental depression, chills, trembling, eating or not eating, mild diarrhea, incoordination of limb movements, unsteady limb movements, blind walking or circling, or limb sliding The body temperature increased to 39 degrees Celsius to 40 degrees Celsius, muscle tremors, twitching from time to time, sensitive to touch, excitement, hoarseness; common in eyelid edema, severe abdominal, facial, lower extremities all have edema, finger pressure There is a powdery sensation; the duration of the disease is several hours or 1-4 days, the longest one is up to one week, and finally lethargy or coma, died due to failure. Rotary Evaporator,Intelligent Temperature Control,Small Lab Rotary Evaporator,Explosion Frequency Inverter Guangdong Widinlsa International Co.Ltd , https://www.guangdongwidinlsa.com