A complete Collection of Prevention and Control of Porcine parasitic Diseases

There are many kinds of parasites in pigs, including Ascaris lumbricoides, scabies mites, pig hair head nematodes (Trichuris trichiura), pulmonary filariasis, Toxoplasma gondii, coccidia, cysticercosis, Trichinella spiralis and so on, but Ascaris, coccidiosis and Toxoplasma gondii are the most common, causing serious harm to pigs. it often results in decreased feed conversion rate, stunted growth and slow growth in pigs. Let's take a look at the prevention and control of pig parasitic diseases.

Porcine ascariasis

[symptoms] Porcine ascariasis is a kind of nematode disease caused by Ascaris suum in the small intestine of pigs, which mainly harms piglets at the age of 3 ~ 6 months. Adult parasites show emaciation, anemia and slow growth. Ascaris lumbricoides often cause intestinal obstruction and intestinal perforation, resulting in corresponding symptoms. The larvae cause Ascaris pneumonia when they migrate to the lungs. The clinical manifestations are cough, increased respiration, elevated body temperature, loss of appetite and mental depression.

[prevention and control] strengthen the hygiene of pig houses and keep them clean. Regular deworming, general pig farms deworming breeding pigs in spring and autumn, and deworming weaned piglets once in the herd. The liquid was made with trichlorfon at 1% concentration, washed, sprayed and sprinkled on the affected part, once a day for 3 days.

Porcine coccidiosis

[symptoms] Porcine coccidiosis occurs only in piglets, and often occurs in piglets at the age of 7-21 days. The incidence can reach 50-75%. In general, the mortality rate is not high, but sometimes it can reach 75%, especially in warm and humid seasons. Adult pigs are worm carriers, which is the source of transmission of the disease, and most of them show a benign process. Common loss of appetite, diarrhea, weight loss, generally lasted for 4-6 days, feces were liquid or paste, yellowish white, occasionally hematochezia. Seriously ill people can die from dehydration.

[prevention and control] the main infectious sources of swine coccidiosis are diseased pigs, infected pigs and contaminated sites, so the comprehensive measures of isolating → treatment and → disinfection should be taken to prevent the disease. Most of the adult pigs are worm carriers, so the sows should be dewormed two months before delivery, and the faeces should be immediately cleared, fermented, disinfected, replaced and disinfected, so that the sows can be produced in a clean state. If sick pigs are found, they should be isolated immediately and treated actively.

Porcine toxoplasmosis

[symptoms] Porcine toxoplasmosis is widely distributed, and it has been reported all over the country, and the morbidity and fatality rate of pigs are very high, the incidence rate can be as high as 60%, and the case fatality rate can be as high as 64%, especially in piglets with 10kg, 10kg and 50kg. Most piglets show acute course. The sick pig suddenly abandoned food, the body temperature rose to more than 41 ℃, and stayed for 7 days for 10 days. Shortness of breath, abdominal or dog sitting breathing, clear nose, serous or purulent secretions in the eyes. Often appear constipation, showing granular feces, external mucus, some pigs in the late onset of diarrhea, urine is orange, a few vomiting. Suffering from pig mental depression, significantly weakened. Neurological symptoms and hindlimb paralysis appeared several days after the onset of the disease. With the development of the disease, purple erythema or small spot bleeding appeared in the ear wing, nasal tip, lower limb, medial thigh, lower abdomen and so on. Some diseased pigs form crusts on the ear shell and dry necrosis on the tip of the ear. Finally, he died of extreme difficulty in breathing and a sharp drop in body temperature. Miscarriages or stillbirths often occur in pregnant pigs. Some have retinal choroiditis and even blindness. Some sick pigs endure the acute stage and become chronic, the appearance symptoms disappear, only slightly poor appetite and spirit, and finally become stiff pigs.

[prevention and treatment] sulfonamides are commonly used in the prevention and treatment of this disease. Sulfadiazine (SD) 70 mg per kg body weight and pyrimidine 6 mg are used twice a day (doubling for the first time) for 3-5 days. Sulfa-6-methoxine (SMM) 60 mg, intramuscular injection, once a day for 3-5 days. Synergistic sulfonamide-5-methoxypyrimidine (containing 2% trimethoprim) 0.2 ml, intramuscular injection once a day for 3 days. Sulfamethoxazole (SMZ) 100mg, once a day for 2 to 3 days. Cats are prohibited from approaching the pigsty, and breeders should avoid contact with cats. Pigs are not fed raw minced meat.

Swine scabies

[symptoms] most of the scabies occurred in pigs under 5 months old. The skin of diseased pigs is itchy, and the lesions often start from the head, such as around the eyes and ears, and then spread to the back, both sides of the torso and limbs. Due to the mechanical stimulation and toxin of scabies, sick pigs show severe itching and friction in posts, corners, food troughs, stones and so on. In the diseased part, the pig hair fell off, and the skin became thicker, dry, dandruff, and formed wrinkles and cracks. When the course of the disease is prolonged and the condition is serious, loss of appetite, mental fatigue, wasting, slow growth or stagnation, anemia, and even death occur.

[prevention and control] it is effective to directly apply, spray or bathe with 2-4% trichlorfon solution once a week for 2-3 times. Use 50g of sulfur, cottonseed oil or peanut oil or soybean oil 500ml, first boil cottonseed oil, later add sulfur, stir well and then apply to the affected part. Use 1 part of tobacco leaf or stem, add 20 parts of water, boil for 1 hour and filter, then smear the affected part.