摘要：
Methods The ITS gene was amplified from each sparganum isolate by PCR and sequenced, and the ITS sequences obtained were aligned using the Clustal X 2.0. Results The results showed that the lengths of
摘要：
Balantidium coli is a cosmopolitan parasitic-opportunistic pathogen that can be found throughout the world. However, little information is available about prevalence of B. coli in pigs in China. In the present study, the prevalence of B. coli in pigs was investigated in Hunan province, subtropical China, between January 2012 and August 2014. A total of 3925 diarrheic fecal samples from nine representative administrative regions in Hunan province, subtropical China, were examined for the presence of B. coli cysts and/or trophozoites using microscopy after sedimentation with water. The overall prevalence of B. coli in pigs was 36.9 % (1450/3925). The present survey revealed high circulation of B. coli in pigs in Hunan province, subtropical China, which poses potential threats to human health. The results of the present investigation have important implications for the control of B. coli infections in pigs in Hunan province, subtropical China. To our knowledge, this is the first comprehensive report of B. coli prevalence in sows in Hunan province, subtropical China.
作者机构：
[Liu, W.; Liu, Y.; Ma, J.] Hunan Agr Univ, Coll Vet Med, Changsha 410128, Hunan, Peoples R China.;[He, S. W.; Li, H.] Xiangxi Vocat & Tech Coll Nationalities, Jishou 416000, Hunan, Peoples R China.;[Guo, Q. C.] Huaihua Vocat & Tech Coll, Huaihua 418000, Hunan, Peoples R China.;[Pan, W. W.] Loudi Anim Husb & Fishery Bur, Loudi 417000, Hunan, Peoples R China.;[Wang, X. J.] Changsha Anim Hlth Supervis Inst, Changsha 410006, Hunan, Peoples R China.
通讯机构：
[Liu, W.] H;Hunan Agr Univ, Coll Vet Med, Changsha 410128, Hunan, Peoples R China.
摘要：
The objective of the present survey was to reveal the prevalence of helminths in adult goats in Hunan Province, the People's Republic of China. From July 2010 through February 2013, a total of 479 goats slaughtered in local abattoirs and markets were examined for the presence of helminths using a helminthological approach. Eighty-six percent of the examined goats were infected with at least one species of helminths. In total, 15 genera of helminths were found representing 2 phyla, 3 classes, 5 orders, and 11 families. Oesophagostomum, Ostertagia and Haemonchus were the most prevailing nematode genera, Eurytrema was the predominant trematode genus detected, whereas the infection of adult goats with cestodes was not common, with Cysticercus tenuicollis being the most common genus. The worm burdens showed obvious seasonal variation in that nematodes and cestodes were abundant in summer and winter, and the trematodes peaked in winter, which was consistent with the seasonal precipitation of Hunan Province. The geographical distribution of helminths in goats ascended with altitude. Goats in the mountainous areas were more severely infected with helminths than goats in the hilly areas, whereas infection of goats with helminths was much less in the lake areas. The present investigation highlights the high prevalence of helminths in adult goats in Hunan Province, China, which provides baseline data for assessing the effectiveness of future prevention and controlling measures against helminth infection in adult goats in this province and elsewhere.
