Porcine ileitis is known as the cold-blooded killer of pig farms. How should it be treated so it does not recur?
Known as the cold-blooded killer of pig farms, ileitis - how should it be treated so it does not recur???
Causes: Proliferative ileitis is caused by Lawsonia intracellularis in pigs. This bacterium most easily grows in intestinal epithelial cells, causing inflammation and proliferative thickening of the mucosa of the pig's small intestine and colon, which makes it impossible for the intestinal villi to absorb feed nutrients and water, causing diarrhea and undigested feed in the feces.
1. Clinical symptoms
1. Acute type
It presents as sudden bloody watery diarrhea. When the course of the disease is slightly longer, black cement-like loose feces are passed, and sudden death may occur. Some pigs that die suddenly show only pale skin while their feces are normal. In severe cases, the incidence rate can be as high as 40%.
2. Chronic type
It presents as reduced feed intake, intermittent diarrhea, with feces being pasty or watery, sometimes mixed with blood or fragments of intestinal mucosa and undigested particles.
2. Necropsy symptoms
1) The pig's ileum becomes thicker and harder, like a “rubber hose.”
2) Ulceration of the ileal mucosa, covered with fibrinoid material
3) Coagulated or uncoagulated blood in the intestinal lumen
4) Sick pigs have diarrhea, with feces contaminating around the anus.
5) Cement-like loose feces containing a lot of undigested feed.
3. Why does it always recur after medication
1. Maintain suitable temperature and humidity in the pens; proliferative ileitis occurs more often on pig farms with large temperature differences, higher humidity, and poor hygiene conditions. It is recommended that pig farms prone to ileitis reduce the frequency of pen flushing to lower humidity, strengthen insulation of the pig house, and disinfect regularly.
2. Medication needs to reach a 14-day treatment course; Lawsonia intracellularis mainly grows in the intestinal mucosa. If medication is given for 7 days, there is no way to kill the pathogenic bacteria, so the condition will recur after stopping the drug. Continuous medication for 14 days can effectively kill the pathogenic bacteria in the intestinal mucosa and achieve the goal of complete cure.
3. Choose the correct drugstreatment; the order of selection principles is tylvalosin, tiamulin, tylosin.
4. Summary and analysis ⟦23 1. Disinfection; before preparing to bring in pigs, first clear out all the previous batch of pigs, wash thoroughly, then soak the pig pens once with caustic soda water and wash again. After leaving the pens empty for more than 1 week, pigs can be brought in.
1. Disinfection: Before preparing to bring in pigs, first clear out all the pigs from the previous batch. After washing thoroughly, soak the pig pens with caustic soda water, then wash again. The pens can be restocked after being left empty for more than 1 week. ,
2. Drug prevention; regularly add tylvalosin 500g + doxycycline 1000g/ton to the feed. This can not only prevent and control ileitis, but also prevent and control respiratory diseases, porcine eperythrozoonosis, streptococcosis, etc. Use continuously for 10-15 days.treatmentFor ileitis, medication must reach the full treatment course. A short duration has incomplete effect and makes a second recurrence easy. (Source: Toutiao veterinarian Lao Xu)