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Main Index
How was Ileitis discovered?
What’s in a name?
A worldwide problem?
Who gets Ileitis?
Why is Lawsonia intracellularis an increasing problem for the pig industry?
Which forms of Ileitis do exist?
Has Ileitis always been so common?
What is the likely impact of Ileitis on farm economics?
What types of treatment are available for Ileitis?
Which antibiotics are most effective against Ileitis?
What is the right time to vaccinate?
Which forms of Ileitis do exist?
There are 2 forms of the disease – acute and chronic. The acute form frequently includes fatal haemorrhagic diarrhoea typically seen in late fatteners and in gilts freshly introduced into the breeding herd (Porcine Haemorrhagic Enteropathy – PHE). The chronic form (Porcine Intestinal Adenomatosis – PIA) affects grow-finishing pigs and is associated with mild diarrhoea, weight loss and increased body weight variation. Subclinical Ileitis is a common chronic form of the disease. This form can be defined as an infection with Lawsonia intracellularis in the absence of clinical signs of the disease such as mortality and diarrhoea. Gross or microscopic lesions of Porcine Proliferative Enteropathy (PPE) are present but of insufficient severity to result in overt clinical signs.

Nevertheless, farms with subclinical presentation of Ileitis experience suboptimal growth, reduced feed intake and loss of homogenicity in body weight (Jacobson et al. 2003; Guedes 2004).
Boehringer Ingelheim Animal Health GmbH, 55216 Ingelheim, Germany. Tel: +49-6132-77-0 Fax: +49-6132-77-3000

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