Prevalence and diversity of Trichomonas gallinae in meat pigeons (Columba livia) in Guangdong Province, People's Republic of China
文献类型： 外文期刊
作者： Cai, Haiming 1 ; Liu, Yu 1 ; Zhu, Yibin 1 ; Xu, Zhihong 1 ; Zhou, Qingfeng 5 ; Yan, Zhuanqiang 5 ; Liao, Shenquan 1 ; Qi, Nanshan 1 ; Li, Juan 1 ; Lin, Xuhui 1 ; Hu, Junjing 1 ; Yu, Shuilan 5 ; Zhang, Jianfei 1 ; Lin, Junwei 6 ; Lv, Minna 1 ; Sun, Mingfei 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Anim Hlth, Key Lab Livestock Dis Prevent Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Hlth, Minist Agr & Rural Affairs, Key Lab Prevent & Control Avian Influenza & Other, Guangzhou 510640, Guangdong, Peoples R China
3.South China Agr Univ, Coll Vet Med, Guangzhou 510642, Guangdong, Peoples R China
4.Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Guangdong, Peoples R China
5.Wens Foodstuffs Grp Co Ltd, Wens Grp Acad, Xinxing 527400, Guangdong, Peoples R China
6.Jieyang Anim Hlth Supervis Inst, Jieyang 522000, Guangdong, Peoples R China
关键词： Trichomonas gallinae; Columba livia; Phylogenetic analysis; Genetic lineage
期刊名称：PARASITOLOGY RESEARCH （ 影响因子：2.383； 五年影响因子：2.348 ）
ISSN： 0932-0113
年卷期： 2022 年 121 卷 11 期
页码：
收录情况： SCI
摘要： Pigeon farming for meat has developed into an important economic industry in most countries, especially in China. Trichomoniasis, caused by the protozoan parasite Trichomonas gallinae, is a worldwide disease in pigeons. However, studies of the prevalence and distribution of T. gallinae lineages in domestic pigeons in southern China are limited. In this study, a total of 636 pigeon throat swabs samples from four regions in Guangdong Province were screened for T. gallinae by in vitro culture assays and microscopy. The results revealed an overall prevalence of T. gallinae infection in southern China of 26.6% (169/636). There were significant differences in the infection rate of T. gallinae between the four regions (chi(2) = 117.948, df = 4, P = 0.000), with up to 44.6% in the Pearl River Delta region. The infection rate of young pigeons was as high as 70.8%. The rDNA sequences (18S rRNA/ITS1-5.8S rRNA-ITS2) of 153 positive samples were amplified and sequenced. Results identified 58.2% (89/153) overall as ITS-A (18S-VI) (also known as ITS-OBT-Tg-1) and 41.8% (64/153) as ITS-B (18S-IV) (also known as ITS-OBT-Tg-2). Thus, ITS-A (18S-VI) was the dominant T. gallinae genotype in southern China, especially in young pigeon (97.0%, 32/33). In conclusion, a high prevalence of T. gallinae infection in domestic pigeons was identified in southern China, particularly in the Pearl River Delta region. The ITS-A (18S-VI) was the dominant genotype highly pathogenic, which may weaken the immune system of pigeons, and cause a negative impact on the development of the pigeon industry in China.
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