The Parasitic Prevalence In Artificial Grazing Sheep In Subtropical Areas Of China

Yunnan, Guizhou belong to the subtropics moist monsoon climates are the important beef cattle and sheep production bases in our country. As its complexly geographical environment, there are many kinds of parasitic disease, making harms in a big way. After exposure to the parasite infection, sheep will exhibit different symptoms. Gastrointestinal parasites on the body can cause weight loss, emaciated, and suffering the diarrhea; The piroplasmosis may cause some symptoms such as fever, anemia, jaundice, hemoglobinuria in the goat and sheep, severe cases can lead to death; The sick animals infected anaplasmosis exhibit some symptoms such as high fever, symptoms of anemia, malnutrition and the severe cases could cause death of the animals; The tick, parasiticing on the surface, not only taking the host blood, spreading a variety of pathogens, causes the different type disease; The flea always causes itching and the skin grasped damages, hair removal and bleeding. These parasitic diseases often cause huge economic losses to the sheep industry and restrict the development of the sheep industry seriously. It could provides reference for the prevention and treatment of parasitic diseases of sheep when we understand the situation of the subtropical areas of artificial grazing sheep parasite infection. A variety of inspection method is applied to investigate the parasite infected situation of of the subtropical areas of artificial grazing sheep during the period from October 2012 to October 2013. The situation of the gastrointestinal parasites, coccidia species, blood piroplasmosis, anaplasma, ticks on the surface carried in the gastrointestinal of the sheep in this area has provided the scientific basis for the prevention and control of parasitic diseases of the digestive tract and blood in sheep, which has important public health significance.1. Select 276 fresh fecal specimens from sheep in seven regions of Yunnan and Guizhou provinces, conventional methods findings that gastrointestinal parasitic infections common in Sheep and the overall infection rate was 90.22%. they are Eimeria spp., Nematodirus, Aschelminthes, Cestoda, Trichuris, Entamoeba. and trematoda. were found with the highest infection rate of 88.04%. In case of sheep, eleven Eimeria spp. were identified namely E. hirci, E. christenseni, E. caprina, E. kocharli, E. alijevi, E. arloingi, E. ninakohlyakimovae, E. jolchijevi, E. apsheronica, E. Caprovina and E. pallida. The results show the prevalence of intestinal parasites in goat was very common and serious. Thus, prevention and control of intestinal parasites are needed.2. Select 336 blood samples from sheep in seven regions of Yunnan and Guizhou provinces, The PCR result revealed Theileria luwenshuni infection rate was 28.57%, The fall infection rate of Yunnan provinces(31.99%) was significantly higher than Guizhou provinces(2.756%). Anaplasma fall infection rate was 49.40%, no significant differences of two provinces; PCR results also confirmed those three species of Anaplasma like-A. phagocytophilum, A. bovis and A. ovis, with varying infection rate as 1.49.% (A. phagocytophilum),13.39%(A. bovis) and 41.37%(A. ovis). Many of them were A. bovis and A. ovis mixed infection. Anaplasma infection can not be ignored, usually should strengthen prevention.The outer surface of the parasite in sheep identified as B. microplus and V. alacurt. PCR result revealed hard tick carry A. Phagocytophilum and A. ovis. Instructions, local anaplasmosis infection may be spread by the B. microplus, usually should strengthen B. Microplus prevention.