Animal Husbandry and Feed Science ›› 2020, Vol. 41 ›› Issue (2): 96-100.doi: 10.12160/j.issn.1672-5190.2020.02.018

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Investigation of Gastrointestinal Nematode Infections in Sheep in the Northern Suburb of Yuci District of Shanxi Province and Description of Nematodirella longispiculata

LUO Xiao-ping, Gaowa, GENG Wan-heng, WANG Peng-long, LIU Yang, LIU Wei, CHEN Wei, Dalaibaolige, GAO Hai-ying, ZHAO Shi-hua, LI Jun-yan   

  1. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
  • Received:2020-01-14 Online:2020-02-29 Published:2020-04-10

Abstract: In order to understand the infection status of digestive tract nematodes in free ranging sheep in Yuci District of Shanxi Province, the infection rate and infection intensity of gastrointestinal nematodes in four sheep in the northern suburb of Yuci District were studied by using complete helminthological dissection. The results showed that the total infection rate of digestive tract nematodes of the four sheep was 100% (4/4), and a total of 7 kinds of nematodes were detected. The observed nematodes species and their corresponding infection rate and average infection intensity were as followed: Haemonchus contortus (100%, 51), Ostertagia circumcincta (100%, 39), Bunostomum trigonocephalum (50%, 5), Nematodirella longispiculata (100%, 29), Oesophagostomum columbianum (50%, 4), Trichuris ovis (100%, 12), and Chabertia ovina (100%, 81). The t-test showed that there was no significant difference in infection intensity between Haemonchus contortus and Ostertagia circumcincta in abomasum; in the small intestine, the significant difference in infection intensity between Bunostomum trigonocephalum and Nematodirella longispiculata was observed; in the large intestine, there was significant difference in infection intensity between Trichuris ovis and Oesophagostomum columbianum, Chabertia ovina. Furthermore, the isolates of Nematodirella longispiculata were morphologically redescribed.

Key words: sheep, gastrointestinal nematode, Nematodirella longispiculata

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