Investigation on Sero-prevalence of Cow Para-tuberculosis
in Dalian City of Liaoning Province in 2018
In this study，all the 11 dairy farms in Dalian City were sampled and investigated，and the prevalence of para-tuberculosis，practitioners' knowledge and behaviors for control of the disease were preliminarily identified through two-stage random sampling plan and questionnaire survey. The results showed that the average individual serological prevalence of para-tuberculosis was 17.23%（95%CI：15.99%–18.74%），and the true prevalence at the farm/herd level was 100%；the risk factors of such infection included age and calving number；cow para-tuberculosis was one of the main causes of diarrhea；and some control measures could not be put in place due to lack of relevant knowledge and awareness in some scaled farms. Therefore，it was suggested that the disease should be controlled as a top priority by series of comprehensive measures to prevent any further spreading，some purification measures could be carried out in some conditional farms/households；bio-safety measures should be carried out by all farms，all introduced cows should be strictly quarantined to avoid any positive cases or suppressive infection；also，popularization and publicity should be strengthened by veterinary departments to enhance workers' judgment on the disease in the farms and to improve their ability to prevent the disease.