青藏高原牦牛支原体血清抗体检测及流行趋势研究.

[Objective (The present paper aimed to understand the distribution and infection of NycopZ+ma in yaks of Qinghai-Tibet plateau in China. % Method】 In this study, 959 yak serum samples (56 from Sichuan, 243 fromGansu, 436 fromTibet and 224 from Qing- hai) were collected fromQinghai-Tibet plateau and tested for rerumantibodies by ELISA. % Result】 The results showed that the positive rate of Mycoplasma bovis antil)〇dy in yak her(ds on Qinghai-Til)et plateau was 48.70 %. If the distribution of the antibody in Sichuan, Gansu, Tibet and Qinghai provinces was observed, the positive rate was 64. 29 53. 09 46.10 % and 45 . 09 %. I the infection age was con¬ sidered , the positive rate was 55.70 % for tliose under one year ol(d, 46.20 % for tliose aged 1 - 2, 45.23 % for tliose aged 3-6 years and 49. 70 % for those over six years old. The positive rate of male and female was 45. 71 % and 50. 24 % respectively. Chi-square test with SPSS21 . 0 software showed that there was no significant difference in the positive rate of serumantibodies between Sichuan and Gansu ( P> 0. 05), but significant difference between Sichuan and Qinghai and Tibet ( P<0. 05), but there was no significant difference among Gan¬su, Tibet and Qinghai ( P> 0. 05) ； there was no significant difference in the age of infection among the four provinces (regions . 05) ； the females of Sichuan，Gansu and Qinghai were higher than males. But there was no significant difference between Sichuan and Qinghai ( P > 0. 05 )， only Gansu ( P < 0. 05 )， while Tiljetan males were higher than females， but the difer- ence was not significant ( P > 0. 05 ).[Conclusion 】It shows that Mycplsma bo— is widespread and prevalent in Yak herds on the Qinghai-Tibet plateau in China，especially in Sichuan， Tibet and Qinghai provinces showing an obvious upward trend year by year [ABSTRACT FROM AUTHOR]