Epidemiological Investigation of Bovine Mycoplasma Pneumonia in Large-Scale Cattle Farms in Shihezi,Xinjiang
In order to have a preliminary understanding of the prevalence of Mycoplasma bovis pneumonia in large-scale cattle farms in the Shihezi region in 2023,serum samples from five different-sized cattle farms in the region were tested for Mycoplasma bovis serum antibodies and bovine mannan-binding lectin 2 (MBL2) levels,and the serological findings were analyzed.Meanwhile,nasal mucus was collected from 20 cattle with respiratory symptoms in the region,and PCR was used to detect the pathogen.The results showed that the average Mycoplasma bovis antibody positivity rate was 38.95％ at 1-5 months.The antibody positivity rate was 40％,34.25％,46.67％,and 53.85％ in calves at 1,3,4,and 5 months,respectively.The results of the MBL2 assay showed that the percentage of MBL2 level exceeding the regular expression was 37.13％,and the percentage of MBL2 level exceeding the regular expression in calves at the age of 2 and 3 months was 50％,respectively,46.57％.70％ (14/20) of the nasal mucus samples from cows were detected with related pathogens,and the mortality rate of 3-month-old calves was the highest at 27.27％.The results indicated that bovine mycoplasmosis was prevalent in some large-scale cattle farms in the Shihezi area.
万方数据
维普
