Hypothermia is a condition when body temperature drop down below normal level of poultry. its also called cold stress. normal temperature of poultry 41-42 Celsius. So hypothermia occurred when temperature getting down it. Its most common problems for chicks age between 01-14 days when environmental temperatures dropped below 15 Celsius.
huddle chicks aside especially daylight area due to imbalance temperature in poultry house thus create hypothermia & birds huddle in the winter season.
Sometimes the unfeathered area of chicks are seen in severe piling by huddling together at one place
Chicks touched to moist & congested underlying skin surface inflamed by huddled
The body surface near the abdomen became red in color when chicks involved severe piling.
Feed remains undigested due to birds refused cold water at night time (15°C) & died in the morning when freshwater coming
the Crop remains full with feed due to digestion not possible when the temperature drops down below 18°C & birds busy in huddling at night in the winter season
Accumulation of blood on heart auricle. In severe hypothermic conditions, the body needs excess heat for maintaining balancing inside & outside temperature Thu why heart became highly pressurized to increase blood flow but unable & ruptured blood vessels in winter.
destruction of hepatocytes by abrupt blood followed by ischemic necrosis that why liver became, harden, increase in size, wide area of necrosis & discolor death after huddling
Ruptured of the right aorta when birds forcefully pumped the heart to increase blood supply to extremities fo the production of heat in cold stress.
severe congestion of lungs when excessive respiration to increase metabolism by which produced heat in hypothermic condition
Frothy & ballooning of intestine due to acidosis when birds deprived water in winter
kidney became severely inflamed due to increased activity during a hypothermic stage in severe cold.