Hemorrhagic bowel syndrome in dairy cattle in Iran: a case report

Hemorrhagic bowel syndrome is a highly fatal intestinal disease of adult dairy cattle with uncertain cause. In a dairy herd in Khorasan Razavi province, Northeast of Iran, two cows showed depression, anorexia, decrease in milk production, ruminal hypomotility, bruxism and dehydration. At necropsy, massive hemorrhage and clot formation was observed within the jejunum and bacterial culture of the intestinal ingesta and lesions showed the presence of a large number of Clostridium perfringens. Subacute ruminal acidosis was detected in fresh and mid-lactation cows. This report shows the possibility of diagnosis of other hemorrhagic bowel syndrome cases in dairy cows in Iran

Prevalence of subacute ruminal acidosis in some dairy herds of Khorasan Razavi province, northeast of Iran

To estimate the prevalence of subacute ruminal acidosis [SARA] in dairy cows, a total of 196 ruminal fluid samples were drawn by rumenocentesis from 10 dairy herds of Khorasan Razavi province, northeast of Iran. Two groups of 12 cows, early lactation and mid-lactation cows were sampled in each dairy herd and ruminal pH was determined immediately using a portable pH-meter. A total of 54 cows [27.6%] were found to be experiencing SARA. No significant differences were found between SARA affected and non-affected cows in ruminal contractions, faecal quality and fat and protein components of milk

Reasons for culling of holstein dairy cows in neishaboor area in northeastern Iran

This study was designed to determine the culling rates of 23 Holstein dairy herds [with an average size of 180 cows per herd] in Neyshabur area in northeastern Iran over a period of three years from 2001 to 2003. The average annual culling rate was 13.1%, [98.5% involuntary and 1.5% voluntary]. Of the total disposals [1612 cows], 53.48% were culled by the end of five years of age. Poor fertility was the most important reason for culling [34.9% of disposals], followed by digestive disorders [12.6%], alimentary problems [10.85%], mastitis [9.6%] and lameness [8.3%]. More detailed epidemiological studies are needed to plan and implement healthcare programs. These programs targeted toward diseases that lead to culling would be prerequisite for a profitable farming