Evaluation of clinical and intestinal ultrasonographic findings in cows with Johne's disease
Subject Areas :
Veterinary Clinical Pathology
mohammad tooloei
1
(
گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه تبریز، تبریز، ایران.
)
gholamali moghaddam
2
(
گروه علوم دامی، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران.
)
mohaddeseh fahimi
3
(
دامپزشک عمومی، کلینیک بخش خصوصی، تبریز، ایران.
)
Received: 2015-12-16
Accepted : 2016-05-25
Published : 2016-05-21
Keywords:
cattle,
Ultrasonography,
Johne's disease,
Intestines,
Abstract :
Paratuberclosis or Johne’s disease is an infection of small intestine caused by Mycobacteriom avium paratuberculosis characterized by persistent and progressive diarrhea, weight loss, debilitation, and eventual death in cattle. A suitable and rapid method for diagnosis of the disease in farms is not available. Trans-abdominal ultrasound is a rapid, clinical and non-invasive diagnostic method recommended for diagnosis of animals with chronic inflammation of the intestine. The purpose of the present study was clinical and trans-abdominal ultrasound examination of cattle infected with organism of the Johns disease. This study was done on 20 female Holstein cattle with consist chronic diarrhea and/or weight loss. All animals were blindly tested for Mycobacteriom paratuberculosis antibodies in blood samples by ELISA and also examined by trans-abdominal ultrasound for intestinal wall thickness. The result of the ELISA test showed that 35% of the samples had antibodies against Mycobacteriom paratuberculosis. The rates of chronic diarrhea, low body condition score and both of them in cattle with positive ELISA were 100%, 71.4% and 71.4%, respectively. In the trans-abdominal ultrasound examination, the intestinal wall thickness of the infected animals (7.9±1.54 mm), was significantly (p<0.001) more than non- infected group (2.7±0.13 mm). This study indicates that the ultasonographic evaluation of the intestine and abdomen can be a quick, useful and on farm method with relatively high specificity in the diagnosis of cattle with John's disease.
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