Due to the implementation of central, provincial, and municipal support policies, the proportion of scale farming has gradually increased. However, some farmers only pay attention to the prevention and cure of infectious diseases such as swine fever, pseudorabies, and blue-ear disease, and they ignore the prevention and control of parasitic diseases, which brings significant losses to the pig industry. It is necessary to prevent parasites on large-scale farms. The following is a brief introduction to the prevention and control of common parasitic diseases in scaled farms and is for reference only.
Parasitic worms are parasitic on the lungs or intestines. With 3 months to 6 months old pigs are more serious. Early larvae of piglets cough into the lungs, difficulty swallowing after coughing, and breathing increase. In severe cases, the heart rate increases and vomiting occurs. Intestinal parasitism, reduced food, heterophilia, weight loss, jaundice, runny nose, diarrhea, vomiting, excessive paralysis of body, constipation, and even death of intestinal rupture. Fecal examinations can be seen in yellow-brown short ovals, thick shells, uneven outer shell eggs (fertilized eggs) or oblong gray-white unfertilized eggs. Treatment can be used mebendazole, 10 mg to 20 mg per kilogram of body weight, fed in mixed feed. Or albendazole 10 mg to 20 mg per kg of body weight, fed in mixed feed. Or ivermectin 0.3 mg per kilogram body weight, dermal or oral.
Pig coccidiosis is found only in piglets and is mostly benign. Adult pigs are carriers and are the source of infection. Piglets constipation diarrhea alternating, gradually thin, loss of appetite. Fecal examination revealed oocysts containing spores. Treatment can be used salinomycin, feed 20 mg to 40 mg per kilogram of feed.
Parasitic nematodes of pig lung filariasis are parasitic on pig bronchi and bronchioles. Body temperature is generally not high, increased breathing, often have paroxysmal cough, one can continue to cough 40 to 60 sounds, each cough after swallowing action, pale eye conjunctiva, nasal discharge, severe hunger strike. The necropsy showed worms and mucus in the bronchus. The lungs had wedge-shaped emphysema and gray-white nodules. Fecal eggs can be seen on the feces. Treatment can be left-imidazole hydrochloride, 5 mg to 6 mg per kg of body weight taken orally or 5% liquid injection. Or ivermectin 0.3 mg/kg body weight.
The tsutsugamushi disease is caused by parasites in the pig's small intestine. Diarrhea, weight loss. Feces can be seen in feces and detected eggs, necropsy visible body. Sulfodidichlorophenol can be used for treatment, 30 mg to 125 mg per kilogram of body weight, fed in mixed feed. Or praziquantel 15 mg per kilogram of body weight, fed in mixed feed.
A chronic parasitic disease caused by contact with an infected pig's skin caused by a parasitic swine fever pig characterized by itchy skin. Itchy skin, itching, local hair loss, there is exudate, blood clot formation. The skin becomes thicker and loses its elasticity due to persistent itching. In the diseased and healthy department, scrape off the dry skin with a small convex blade knife, and then scrape the fresh skin to scrape the bleeding. Take a cup of clam skin, add appropriate amount of caustic soda 10%, carefully chop, boil for a few minutes, collect hair coarse residue, and then precipitate 5 minutes to 10 minutes or centrifuged sediment, take sediment microscopic examination, such as the discovery of eggs, larvae Adults can be diagnosed. Treatment can use ivermectin, 0.3 mg per kilogram of body weight, skin or muscle shot. Or use 0.025% to 0.05% Amitraz to apply or splash the affected area, and repeat it from 7 days to 10 days.
Toxoplasmosis in pigs body temperature 40 °C ~ 42 °C, mental fatigue, nasal discharge, flushing eye secretions, breathing fast or difficult, dry manure, dark red or black, urine was orange. There are erythema or blisters on the medial side of the lower abdomen of the ear. The necropsy showed a bright lung with swelling, bleeding, interstitial widening and full of jelly-like material, swelling of mesenteric lymph nodes like cords, submandibular hilar hilar lymphadenopathy 2 to 3 times, pale yellow, brown Caseous necrosis and bleeding points. The liver is turbid and swollen, the spleen and marrow are muddy, and the cecum and colon are seen in the small pinkish and central depressions. Take lymph nodes smears or tablets, with Giemsa or Wright stained microscopy, can be found half-moon or crescent toxoplasma. Treatment can be used synergistic sulfonamide-5-methoxyxanthine injection, 2 mg intramuscularly per kilogram of body weight, 24 hours, once every 3 days to 5 days.
Porcine Eperythrozoonosis Eperythrozoon in pigs is parasitic on protozoal diseases caused by red blood cells and plasma. Mostly from July to September, the mortality rate of piglets is about 1 month old. Increased body temperature (40 °C ~ 42 °C), mental depression, pale jaundice after visual mucosal hyperemia, hind leg instability, asthma, dyspnea, redness of the body's skin, ear nose and abdomen serious, later changed to bruising. The blood is thin and blood is bleeding after it has been collected. The necropsy showed yellow subcutaneous fat, yellow jelly-like jelly in the coronal sulcus, pulmonary edema, hepatomegaly, yellowish or brownish yellow, enlarged kidneys, turbidity, severe anemia, lymphedema, and juicy cuts. . Pig blood pressure in the high magnification microscope dark field observation shows that a large number of red blood cells are not exactly the edge, showing a star-shaped or polygonal shape. It can be seen that bright spots flash in the plasma. Observed in the dark field of the oil mirror, the edge of the red blood cells is not completely deformed into a gear-shaped, star-shaped or irregular shape. A large number of attached erythroid bodies accumulate on the surface of erythrocytes, causing erythrocytes to tremor in the plasma or to oscillate up and down and left and right. Treatment can use new arsenic vanadine (914), 10 mg to 15 mg per kg body weight, intravenously, once every 3 days. Or Bennier 5 mg to 7 mg/kg body weight once daily for 3 days.
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