Winter is a high-incidence season for pig diarrhea, strictly guard against coronavirus disease
Strictly guard against pig diarrhea caused by coronavirus disease in winter
I. Symptoms The symptoms of this disease are mostly of the acute sudden-onset type. At the beginning of the disease, the body temperature is slightly elevated, at around 40°C-41°C, the animal is listless, stays away from the herd and is lazy to move, has no appetite, shows thirst, the coat is erect and dull, the feces change from thick to thin, the fecal color is grayish yellow or grayish black, with a foul odor, and in the later stage the feces become watery, with anal incontinence, the buttocks, hind limbs and tail are contaminated by thin feces, urine output is small and yellow, appetite is completely lost, the animal is unwilling to move, walks unsteadily, lies on the ground and trembles, the eyeballs are sunken, the body temperature drops, and generally death occurs from exhaustion in 2-3 days. Weaned piglets, finishing pigs andbreeding pigshave milder clinical symptoms, with reduced appetite, willingness to drink clean water, thin feces, fecal color and consistency like yellow sauce, the feces often mixed with incompletely digested feed, listlessness, rapid emaciation, sunken eye sockets, lying on the ground and unwilling to move, and in the later stage the lower parts of the limbs, the tips of the ears and the tips of the tail become cold; if timelytreatmentis given, most can recover. Adult pigs,breeding pigsand strong pigs also recover on their own after the onset of the disease.
II. Analysis of causes Sick pigs and virus-carrying pigs are the main sources of infection. The virus is excreted in the feces, contaminates the environment and spreads the infection. The main route of infection is that healthy pigs eat feed and water containing the virus, or inhale virus-laden air and dust through the respiratory tract and become infected. In enclosed pig houses, pig herds are more susceptible to this disease in late autumn and early winter when humidity is relatively high, the temperature is low and stocking density is high, and within a few days all the pigs on the farm become ill.
III.TreatmentAt present there is still no specific therapy for the occurrence of this disease. Symptomatictreatmentcan relieve symptoms and prevent secondary infection; strengthening nursing care can reduce deaths. The specific methods are as follows:
1.TreatmentFor pigs with milder illness. Use Newcastle disease strain I vaccine, 0.5 g per vial plus 10 mL of normal saline, inject 2 mL per pig regardless of size; inject ribavirin 0.2 mL per kg of body weight, once daily.
2.TreatmentFor pigs with more severe illness. Use enrofloxacin injection to prevent secondary infection, at 0.1 mL per kg of pig body weight (containing 25 mg enrofloxacin), intramuscular injection, twice daily, for 3 consecutive days. Or use Changyanling injection, at 0.3-0.5 mL per kg of pig body weight, intramuscular injection, twice daily, with 2-3 consecutive days as one course of treatment. While injecting, add oral rehydration salts to the drinking water as early as possible. The preparation method of oral rehydration salts is: refined sodium chloride 35 g, sodium bicarbonate 25 g, potassium chloride 15 g, glucose 200 g, water 10 kg, mix and dissolve to make it. For small pigs with no desire to drink, use a metal syringe to administer 40-80 mL each time, 5-6 times daily. Intravenous injection of 5%-10% glucose saline and 5% sodium bicarbonate injection, 500-1000 mL each, twice daily, for 2-3 consecutive days, may be used. Restrict food and feed a nutrient-rich, easily digestible diet.