Question:  query regarding deworming of a cow, having 5 month of gestation period 
Answer:  told him to wait for another 4 month until calving [ act of parturation in cow  ], it is advisible not to use the dewormer during the time of gestation period -- may cause contraction of uterine masculature --resulting abortion[ can be use under proper supervision by a veterinarian ],--- lifting of tail in upward direction is due to the pressure on the pelvic nerve[sacro-sciatic ] & pressure on the broad ligament -- hot fomentation on the lumbo -sacral region or on the pelvic area --may reduce the incident