Question: query regarding  a pig showing the signs of pyrexia & in appitance 
Answer:  check the temperature first -- if it is pyretic give antipyretic [ acetaminophen or paracetamol ] give a course of antibiotics &steroid [ enrofloxacin & dexona ] , inject pepsid 10 ml  & digestive restorant like -- floraboost / anigest / digestovet / ruchamax