Heatstroke is when the body is in a high-heat environment, the body's skin heat conduction and sweat heat dissipation is blocked, can only passively accelerate the respiratory frequency to exhale through the water vapor, but the rapid breathing and high temperature and further cause the body metabolism, resulting in a lot of heat, The imbalance between heat production and heat dissipation, further increase in body temperature, accumulation of a large number of metabolites, causing acidosis in the body. At the same time, due to the large loss of body fluids and salt, it causes microcirculatory disturbances, and then shock failure. If the human intervention is not timely and effectively, the death rate is very high.
Ensure the ventilation of the bar
Pighouses should be cleaned twice a day and rinsed once. Because pig manure is also a heat source in the summer, it should be thoroughly cleaned. The doors and windows of the pig house are fully opened to facilitate ventilation of the live pigs. Conditional scale farmers can add ventilation facilities.
Cold water spray
For the brick-concrete structure, cement floor of the piggery, under the premise of doing a good job of cleanliness, at 1 o'clock in the afternoon and at 5 o'clock in the afternoon on the barn hygiene wall (1 meter high) and the ground with cold water, more than 75 kilograms of body weight Pigs can be sprayed with cold water to cool the pigs safely.
Adjust the structure of the diet
Feeding pigs in summer should reduce the heat energy feed (such as corn and oilseed meal) in the diet to below 45%, increase the protein feed (such as soybean meal, cakes and beans) by 1-2%, and increase the feed appropriately. High-quality green fodder to cool off heatstroke.
Equipped with refreshing substances
Farmers must be equipped with a certain amount of mint, camphor quinone, licorice, talc, tannin, mung bean, wild chrysanthemum, vinegar and other heat-removing substances, soaked in cold water for 24 hours for pigs to drink better cooling effect. Have enough clean drinking water for free drinking.
Pig heat stroke symptoms
It usually happens in the sweltering summer, normal in the morning, suddenly depressed in the afternoon, loss of appetite, and wetlands. The body temperature of pigs rises sharply, often above 41 degrees, and can even reach 44 degrees. In the early stage, it was accompanied by difficulty in breathing, severe breathing, and late complications and ataxia. Pigs born to pigs, lactating sows and pigs with limb and foot disease are very prone to occur. These pigs often become signalling pigs.
Emergency measures after heatstroke
If symptoms of live pig heatstroke (elevated body temperature, shortness of breath, mouth foam, vomiting, purpura, etc.) occur, the sick pig should be promptly transferred to a cool, ventilated, and quiet place. In view of the degree of heat stroke, cold water is sprayed on the head of the diseased pig, drinking 20 ml of peppermint water, 30 ml of camphor quinone, and 2 to 10 milliliters of intramuscular injection of Anacantha. If there is a disturbance of consciousness in the heat-swept pig, the lying land cannot afford to fall into a coma. Immediately cut off the tail, cut ears and bled, in order to avoid meningeal congestion leading to death.
Change the small environment, spray alcohol on the body, apply cold compresses on the head, put on the electric fan, and prepare plenty of cold water for free drinking. Anti-shock, microcirculation adjustment, intramuscular injection of camphor sulfonate, dexamethasone, and vitamin C. Diuresis first, to reduce intracranial pressure and heart and lung burden, especially when breathing is very difficult, with intramuscular injection of furosemide or intravenous mannitol. Then, normal saline was intravenously injected to prevent dehydration.
The amount of blood in the ear vein may be appropriate to reduce the burden on the heart.
Recovery measures after treatment
If the treatment is timely, after the above emergency treatment, most of the conditions can be stable. For pigs, when the body temperature drops and wheezing stops, just keep the pigsty cool and recover slowly. For sows, follow-up treatment can be carried out. Since heat energy is consumed in the body during heatstroke and a large amount of decomposition products are produced, 25% glucose and a large amount of 5% sodium bicarbonate can be input intravenously to restore physical strength and eliminate toxins. Acidosis, restore appetite.
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