Single locust

It is a common endoparasite and often causes serious economic losses to pigs. Pig mites are the largest parasites in the digestive tract. Adults are 15 to 40 cm long. Adults are parasitic in the small intestine or bile ducts. Pigs can be infected by feed, water and soil contaminated with eggs. It can also adhere to the breasts of sows, which can be infected when the piglets are breastfeeding. The eggs are swallowed by the pigs, hatched in the small intestine, and then enter the liver. It then migrates through the bloodstream to the lungs. Finally re-enter the small intestine to become an adult. Adults begin to ovulate after 35 to 60 days of infection. It takes 3 to 4 weeks for the eggs to be discharged from the feces to be infectious.

1.1 symptoms

One week after infection, it can be seen that the sick pig coughs breathing faster and the body temperature rises. Seriously ill pigs can see mental, loss of appetite, heterosexuality, weight loss, anemia, rough hair and diarrhea. Adults who have mistaken bile ducts cause biliary obstruction, causing symptoms of jaundice in sick pigs.

1.2 pathology

The lesion is limited to the liver, lungs and small intestine. Most milky white reticular lesions are seen on the surface of the liver, called "milk liver." Bleeding or inflammation can be seen in the lungs during the transition period of infection. There are many aphids in the small intestine, and the mucosa is red and swollen. A large number of parasites can in turn cause intestinal blockage or even rupture. Sometimes mites drill into the biliary tract to cause obstructive jaundice.

1.3 diagnosis

The prenatal diagnosis uses a stool test, and if one thousand eggs per gram of feces is found, it is diagnosed as tsutsugamushi. Post-mortem necropsy can find a large number of worms and corresponding lesions in the small intestine.

1.4 control

Since eggs while the bottom-up to 5 years, roundworm control is not easy. Pig houses that have been infested by locusts for a long time should always remove feces, accumulate fermentation to kill eggs, maintain good environmental hygiene, thoroughly clean the pig pens, and prevent feed water from being contaminated by feces. 2 to 6 weeks old pigs are dewormed once a month, and adult pigs are regularly 2 times a year. For treatment or prophylactic deworming, levamisole, trichlorfon, etc. may be used.

2. Pig whipworm disease

Adults of swine worms parasitize the surface of the cecum and colon mucosa. It takes at least 3 weeks for the eggs to drain from the feces to develop into larvae-containing eggs. After oral infection, it develops into adult worms in the colon and cecum. From infection to adult ovulation for a total of 6 to 7 weeks. Whipworm eggs are also very resistant and can survive for years on contaminated ground. When the swine worm is highly infected, the intestinal hemorrhagic inflammation is caused by the deep mucosa of the worm's head, and its symptoms are easily confused with pig blood stasis. Often complicated with porcine blood stasis, which causes visceral sputum to make diagnosis and treatment more complicated.

2.1 symptoms

Pigs aged 1 to 6 months are susceptible to infection by swine worms. The severity of whipworm disease is associated with adult infection. Clinically, the appetite is reduced, and the stool is bloody, thin, and anemia.

2.2 diagnosis and treatment

Prenatal diagnosis can use feces to check eggs, and can be treated with trichlorfon and levamisole.

Round worm

Round nematode, parasitic in the small intestine of pigs. Its larvae can infect piglets through colostrum. Clinically, severe infection of the small intestine occurs in congestion, bleeding and ulceration. The sick pig is thin, anemia, abdominal pain, and finally extremely weak and die. Diagnosis can be done by dropping eggs into the feces or in the intestines. The treatment of this disease uses albendazole.

4. Trichinosis

Trichinella adults parasitize in the intestine, and larvae parasitize the striated muscle. People, pigs, dogs, cats, rodents and wolf foxes can all be infected. The worms often circulate in humans, and human trichomes can cause death. The infection originates from the feeding of raw or undercooked pork containing Trichinella cysts. Meat hygiene inspection is the primary method to control trichinosis. The insect is weak to the pig, but strong to the human.

5. Pig nodule

The genus is a nematode of the esophagus, which is parasitic in the cecum and large intestine. Pigs older than 1 week are most susceptible to infection. The main lesion is the formation of nodules in the calf. The clinical symptoms of this disease showed a slight squat. In addition to diarrhea in severe infections, pigs are highly thin and stunted. Diagnosis can be done by fecal test eggs, treatment with levamisole or albendazole. Pig farm power network

6. Pig lung disease

2. Pig is the sole host of the porcine lung nematode. The worm body is milky white. Adults of the porcine lung nematode parasitize the pig's trachea, mainly parasitic on the temporal lobe. The symptoms of pigs infected with lungworms are similar to those of swine asthma. Pigs have cough, difficulty breathing, loss of appetite, weight loss of anemia, and growth retardation. Prenatal diagnosis uses feces to check eggs. The worm can be found in the bronchi or small bronchi after death to confirm the diagnosis. Prevention and treatment of this disease first kills the intermediate host mites, and the popular pigs should be dewormed regularly.

7. Porcine kidney disease

The insect is parasitic in the fat tissue around the kidney of the pig, and the worm body is thick and taupe. Pigs, regardless of their size, have skin inflammation at the beginning of their illness. Later, they have mental and poor appetite. They are prone to sleep, hind limb weakness, and limp. Gradually anemia, weight loss. Microscopic examination of urine. If the eggs are found or the pigs are found to have renal pelvis and fat around the kidney, the diagnosis can be confirmed. Treatment with levamisole, albendazole and other drugs.

8. Trichomonas sinensis

The roundworm is mainly parasitic in the stomach mucosa of pigs. The worm body is red and slender, and pigs of all ages are susceptible to infection. Sick pigs show gastritis, anemia, and dysplasia. The disease can be diagnosed by combining clinical symptoms, fecal examination and autopsy. Treatment with levamisole, albendazole and the like.

9. Control of endoparasites

The first step is to provide the pig with a good environmental condition, such as dry, sunny, temperature-friendly and ventilated. The pigs are required to have a reasonable density and are kept in the cement ring. The pens are often cleaned and disinfected, and the manure is collected and accumulated at any time to kill the eggs. Always pay attention to ensure the hygiene of feed and drinking water and prevent pollution. Provide adequate feed to pigs. Diets should be rich in protein, vitamins and minerals to increase their resistance to parasite infestation.

Regular preventive deworming of pigs. It can reduce the intensity of parasitic infections and prevent the emergence of parasitic diseases. The timing of deworming should be before the weaning pigs enter the growth house; after the growth pigs enter the growth house for two months: the sows are pregnant before entering the delivery room. Boars are dewormed twice a year. Intermediate insects and vectors such as cockroaches, mosquitoes, cats, and rats should be eliminated or eliminated at any time during deworming.