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C.jejuni and C.coli can cause diarrhoea in both adult and calves but is also a commensal in many species and can be found in healthy animal gastrointestinal tracts.  Campylobacter is spread via the faecal oral route.

C.jejuni and C.coli can cause diarrhoea in both adult and calves but is also a commensal in many species and can be found in healthy animal gastrointestinal tracts.  Campylobacter is spread via the faecal oral route.

==Clinical signs==

==Clinical signs==

Calves are more seriously affected and suffer from thick mucoid diarrhoea, often flecked with blood and can have pyrexia or a normal body temperature. Cattle may also suffer from tachycardia, rapid pulse rates and tachypnoea and weight loss.  Adult cattle can become anorexic and show various reproductive signs such as anoestrus, irregular oestrus patterns, hot udders, agalactia, abortion and infertility.

Calves are more seriously affected and suffer from '''thick mucoid diarrhoea''', often flecked with blood and can have pyrexia or a normal body temperature. Cattle may also suffer from tachycardia, rapid pulse rates and tachypnoea and weight loss.  Adult cattle can become anorexic and show various reproductive signs such as anoestrus, irregular oestrus patterns, hot udders, agalactia, '''abortion''' and infertility.

==Diagnosis==

==Diagnosis==

Rising antibody titre can confirm the presence of campylobacter.  C Jenuni can be isolated and cultured from placental and foetal tissue.  It causes the stunting and fusion of villi, dilation of crypts and crypt abscesses and mild cellular infiltration of the mucosa.  The profound lesions can be found in the proximal small intestines and colon and can be visualised as comma-shaped organisms on the surface of the epithelium and within the lamina propria using silver staining.

Rising antibody titre can confirm the presence of campylobacter.  C Jenuni can be isolated and cultured from placental and foetal tissue.  It causes the stunting and fusion of villi, dilation of crypts and crypt abscesses and mild cellular infiltration of the mucosa.  The profound lesions can be found in the proximal small intestines and colon and can be visualised as comma-shaped organisms on the surface of the epithelium and within the lamina propria using silver staining.