epidemiological studies on cystic echinococcosis in china--a the four decades from 1951 to 1990, the six provinces or autonomous regions (xinjiang, gansu, qinghai, ningxia, xizang and nei monggol) reported a total of 26,065 surgical cases of hydatid disease, most of which were reported in the recent decade. about one third of the patients was children and adolescents under 15 years old. so far, cystic hydatid infections of local origin have been confirmed in 22 provinces, autonomous regions and municipalities in the whole nation. findings of x-ray exam ...19957546341
theileriosis of sheep and goats in china.theileriosis is an important disease of sheep and goats in west china. its main distribution includes qinghai, gansu, ningxia, inner mongolia, shaanxi and sichuan. the epidemic period is from late march to july with april-may being the peak months. this is the period of most intensive tick attack by haemaphysalis qinghaiensis (77.2-99.24%) during the year. it has been proved that the nymphs and adults, which develop from larvae and nymphs engorged on infected sheep or goats can transmit the path ...19979512737
molecular study of echinococcus in west-central china.west-central china is an important endemic focus of both alveolar and cystic echinococcosis where several species of intermediate host are commonly infected with echinococcus granulosus and e. multilocularis . isolates of e. granulosus were collected from humans and other animals from different geographical areas of qinghai, ningxia, gansu and sichuan, and genotyped using the mitochondrial dna marker atp synthase subunit 6 gene (atp6). the sheep strain (g1 genotype) of e. granulosus was shown to ...200516174420
[study on molecular epidemiology of borna disease virus in ningxia and vicinal regions].in order to investigate the epidemics of borna disease virus (bdv) in ningxia and its vicinal regions.200617152506
molecular phylogeography and genetic differentiation of blue sheep pseudois nayaurszechuanensis and pseudois schaeferi in china.within the genus pseudois (bovidae, artiodactyla), two challenges are faced by taxonomists. first, the designation of the two subspecies of blue sheep, pseudois nayaur nayaur and pseudois nayaurszechuanensis, tends to be questionable with the accumulation of morphological and molecular data. second, the taxonomic status of the dwarf blue sheep (pseudois schaeferi) has been controversial since its discovery, and molecular analyses with relatively small sample sizes have not painted a clear pictur ...200818565767
[construction of phylogenetic tree and sequence analysis on bdv p24 gene in both livestock and host in ningxia.]objective: to gain detailed insights into the borna disease virus infection and its genetic characteristics and phylogeny in ningxia, china. methods: bdv p24 segment were detected by fluorescence quantitative nested rt-pcr from peripheral blood mononuclear cells of 119 patients with viral encephalitis, 205 cattle, 978 sheep, 46 patients with cerebrovascular diseases and 13 patients with multiple sclerosis. data from phylogenetic analysis on bdv p24 positive samples together with those from the p ...201021215083
Molecular cloning and polymorphism analysis of the prion protein gene in Tan sheep of Ningxia, China.The resistance or susceptibility of sheep to scrapie is associated with polymorphisms of the prion protein gene (PRNP), particularly, single nucleotide polymorphisms (SNPs) in amino acid positions 136, 154 and 171. The prion protein (PrP) gene sequence and the deduced amino acid alignment of prion protein in Tan sheep, a local Chinese sheep breed traditionally raised in Ningxia, northwestern China, were determined and variability of the PrP amino acids sequence was analyzed in this study. The Pr ...201121722718
oldest directly dated remains of sheep in china.the origins of domesticated sheep (ovis sp.) in china remain unknown. previous workers have speculated that sheep may have been present in china up to 7000 years ago, however many claims are based on associations with archaeological material rather than independent dates on sheep material. here we present 7 radiocarbon dates on sheep bone from inner mongolia, ningxia and shaanxi provinces. dna analysis on one of the bones confirms it is ovis sp. the oldest ages are about 4700 to 4400 bce and are ...201425417648
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