For how many days and how often are the ducks force fed ?
On physiology , the report finds that based on studies available , " no definite conclusions can be drawn concerning the physiological activity of birds in response to force feeding " because although " force feeding induced hepatic steatosis in the duck or goose " , " hepatic steatosis in the waterfowl is a normal metabolic response " and there was a low incidence of disease indicating lesions .