Prevention and treatment of heat radiation disease in pigs

In 1996, there was an upsurge in Waisha Town. Due to the lack of funds, there are more miniature pig farms. With a certain scale, there is only one with an annual output of more than 1000 heads, 8 with an annual production of several hundred heads, and more farm-style pigs with an annual output of dozens of heads. Sows are mainly grown-up, large-length hybrid offspring. Generally speaking, due to the small pig house, poor equipment, lack of ventilation, stuffy inside, pig shit, smelly urine and other factors, those obese non-pregnant sows or pregnant sows often cause heat ejection every year during the hot June-September period. If it is found that no timely or emergency measures are taken, the pregnant sows die because of high fever and the fetus dies in the abdomen, and the lactation of the lactating sows after giving birth leads to the starvation and diarrhea of the suckling piglets, which leads to weight loss, reduced resistance, hindered growth and development, and increased death; miscarriage occurs in the first pregnant sows, which brings certain economic losses to the pig industry.

Pig heat radiation disease is due to the body temperature regulation dysfunction or the body by non-sunlight stimulation, resulting in excessive heat storage in the body, heat dissipation obstacles, body heat storage overheating and the main symptoms; sick pigs in a certain time body temperature rises to more than 41 ℃, the whole body is hot; open mouth breathing shortness, tongue protruding, heartbeat faster, sometimes excited state. Restless, such as hitting hurdles, biting bars, etc., lying unstable; constipation, feces are mostly dry and hard dung balls, corneas flush, after purple, sows die, the abdomen turns purple.

Prevention and control measures: when sow heat radiation disease is found, emergency measures should be taken in time to make the pig heat dissipate as soon as possible. First, intramuscular injection of antipyretic drugs, with 10% analgin or compound ampicopyrine injection, high dose should be intramuscular injection, in order to quickly absorb antipyretic. Second, the use of flushing pig house tap water or groundwater to sprinkle the pig body and enema, repeated use, as soon as possible to spread the body heat outside the body, generally after 20 minutes can be effective. However, pregnant sows should observe whether the fetus is stillborn after the disappearance of symptoms, gently touch the abdomen with hands, understand the movement of the fetus in the fetus or auscultation of fetal sounds, and find out the dead or alive condition of the fetus. If stillbirth is found, it should be induced labor to protect the mother from death. Sows should be careful not to use rude means to reach into the uterus and cut out the fetus, which often causes mucous membrane of vagina, cervix, uterus, edema and inflammation. Damage, stagnation of blood, the consequences lead to failure of induced labor, poor maternal prognosis, and even death. Proper method: find the stillbirth of the sow, give the sow intramuscular injection of oxytocin, and inject 35 ℃ warm water into the uterus to increase the intrauterine pressure and promote uterine peristalsis. A few minutes later, it is found that the sow withdraws its abdomen. When the fetus is excreted, midwifery should be used to ensure the completion of the mother. After the end of induced labor, if it is found that there is inflammation in the vagina and uterus, oxytetracycline powder, Gongyanjing and other drugs can be used to treat the weak sows.

In order to reduce the occurrence of heat radiation disease, preventive measures should be strengthened: ventilation and ventilation environment should be improved. If you set up a fan to reduce the stuffy heat in the sow house, make the pig live in a well-ventilated and cool environment, enhance the sense of responsibility for raising, make more tours, detect sick pigs as soon as possible, and find sows with constipation, they should be given laxative treatment to increase the number of sows to cool with water, so as to make pigs feel cool. The above comprehensive measures can be effective and reduce losses as long as the word "serious" is achieved.