Take the ill animals away from the herd and consult your veterinarian. This is caused by a bacteria called Leptospira. Symptoms include loss in weight, jaundic, anemia, abortion, reduced milk flow. Consult your veterinarian. Symptoms include an inflammation of the milk producing glands in the udder.
Treatment consists of trying to overcome constipation, stop infection, and to start milk flow.
Consult your veterinarian. Mycoplasma hyopneumonia is a cause. Symptoms are coughing at two to three weeks of age, thumping and breathing hard and death usually results. Clean quarters can help but consult your veterinarian. Symptoms include lose of embryo, also mummified pigs and sows do not come in heat.