کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5802928 1555686 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Occurrence and molecular characterization of Cryptosporidium spp. in yaks (Bos grunniens) in China
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Occurrence and molecular characterization of Cryptosporidium spp. in yaks (Bos grunniens) in China
چکیده انگلیسی

Compared with dairy and beef cattle, few data are available on the occurrence and distribution of Cryptosporidium species in yaks, which live in a very different habitat. In this study, 327 fecal specimens were collected from yaks in 4 counties in Qinghai Province of China and screened for Cryptosporidium by nested PCR analysis of the 18S rRNA gene. A total of 98 (30.0%) specimens were positive for Cryptosporidium. The occurrence of Cryptosporidium varied significantly among age groups; infection rates were 49.3% in weaned calves, 31.7% in yearlings, and 17.4% in adults. PCR products of all Cryptosporidium-positive specimens were successfully sequenced, with 56 specimens (57.1%) having C. bovis, 33 (33.7%) having C. ryanae, 2 (2.0%) having C. andersoni, 1 (1.0%) having C. ubiquitum, 1 (1.0%) having C. xiaoi, 2 (2.0%) having a novel genotype, and 3 (3.1%) having mixed infections of C. bovis and C. ryanae. There were some age-related differences in the distribution of Cryptosporidium species in post-weaned yaks examined. To our knowledge, this is the first report of C. andersoni, C. ubiquitum, C. xiaoi and a novel Cryptosporidium genotype in yaks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Veterinary Parasitology - Volume 202, Issues 3–4, 28 May 2014, Pages 113-118
نویسندگان
, , , , ,