21
2019
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05
Cooling in pig farms should not be overlooked—Aogong’s mist‑spray cooling system is highly recommended!
Author:
Cooling in pig farms should not be overlooked—Aogong’s mist‑cooling system is highly recommended!
In China, summer is generally characterized by high temperatures, especially in the southern regions, where temperatures often reach… 30 °C ~35 Between ℃, humidity is often higher than 70% , and the duration is relatively long, lasting up to 4 months. 30 Heat is unbearable for humans, and pigs are no different—they, too, dread the heat.
As is well known, pigs are homeothermic animals with relatively thick subcutaneous fat and underdeveloped sweat glands. Practical experience has shown that when the ambient temperature reaches… 30 When temperatures exceed ℃, if cooling measures are not implemented, all pig populations will experience heat stress, significantly compromising their health. Under high-temperature conditions, for every increase in the pig house’s temperature… 1 At ℃, the pig’s feed intake will decrease by half a jin.
I.
Effects of high-temperature conditions on pig performance:
1.
Feed intake, average daily gain, and feed efficiency in pigs all decline.
2.
Boars exhibit reduced libido, declining semen quality, decreased sperm count, diminished sperm motility, and an elevated rate of sperm abnormalities.
3.
Anestrus or behavioral anestrus in gilts and sows (with inconspicuous estrous signs but capable of ovulation);
4.
Sows in gestation may experience abortion, premature farrowing, weak piglets, stillbirths, and mummified fetuses.
5.
Growing and finishing pigs exhibit low feed intake, slow weight gain, and may even succumb to heat stress and die.
6.
Sows that fail to come into estrus exhibit a marked decline in conception rates and litter sizes.
7.
Sows in labor exhibit restlessness, reduced feed intake, decreased milk production, and significant weight loss.
II.
Environmental temperature requirements for various pig populations:
1 , Newborn piglets: The optimal growth temperature is :34 °C ~35 °C;
2 , three to 4 For piglets of a certain age, the optimal growth temperature is 30 Around ℃;
3 The suitable growth temperature for slightly larger piglets is 20 °C to 23 °C;
4 The optimal temperature for the growth of adult pigs is 17 °C ~22 °C;
Consequently, as temperatures in pig farms continue to rise, heat stress is more likely to occur, weakening the pigs’ immune defenses and facilitating the onset and spread of various parasitic, viral, and bacterial diseases. This poses a serious threat to swine health and can result in substantial economic losses for the pig‑raising industry.
In pig farming, adequate ventilation is essential, particularly during the sweltering summer months. Timely cooling measures should be implemented to provide pigs with a cooler living environment, thereby enhancing their production performance and ultimately improving the economic efficiency of the farm.
III. Cooling Measures for Pig Farms in Summer:
1.
In the architectural thermal insulation design of pig houses, using hollow bricks instead of conventional clay bricks for wall construction can increase the wall’s thermal resistance. 41% Moreover, using double-layer walls can significantly increase the wall’s thermal resistance. Around the perimeter of the piglet house, plant trees, climbing vines, or employ reeds, curtains, eaves, and other measures to block direct sunlight from entering the pigsty.
2.
Ventilation
Effective ventilation of pig houses during the summer can remove excess heat and help lower indoor temperatures. Currently, pig houses are ventilated either naturally or mechanically.
3.
Spray cooling
Spray cooling is currently a new type of misting system that offers low costs and relatively effective temperature reduction in livestock and poultry farming. At present, it is widely used in animal housing facilities across China for cooling purposes.
A,
Spray cooling equipment
B,
Spray cooling system
C,
Spray cooling system
During the hot, humid summer months, pig farm operators must remain vigilant against disease. Poor farm conditions and the proliferation of mosquitoes and flies can make summer a high‑risk season for diseases such as erythrocyte‑associated infections and toxoplasmosis. These illnesses often manifest as chronic, subclinical forms, and the resulting losses to pig farms can be substantial. Therefore, proactive prevention and effective management—anticipating potential challenges before they arise—are paramount in successful pig farming.
Note: For pigs experiencing severe heat stress, applying ice packs to the head can rapidly alleviate the condition; this method may be used in emergency situations. For more information on mist‑cooling, please contact 020‑86877326.
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