Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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| hypoxia-inducible factor 1alpha cdna cloning and its mrna and protein tissue specific expression in domestic yak (bos grunniens) from qinghai-tibetan plateau. | adaptation to hypoxia is regulated by hypoxia-inducible factor 1 (hif-1), a heterodimeric transcription factor consisting of an oxygen-regulated alpha-subunit and a constitutively expressed beta-subunit. how animals living on qinghai-tibetan plateau adapt to the extreme hypoxia environment is known indistinctly. in this study, the qinghai yak, which has been living at 3000-5000 m altitude for at least two millions of years, was selected as the model of high hypoxia-tolerant adaptation species. t ... | 2006 | 16876112 |
| copper deficiency in yaks on pasture in western china. | the clinical signs of a disorder in yaks (bos grunniens), known locally as "swayback ailment," in the qing hai-tibetan plateau are described. the purpose of this study is to investigate the possibility that swayback ailment is iron (fe)-induced copper (cu) deficiency. the mean concentrations of cu in soil and forage from affected areas and unaffected areas are similar and within the normal ranges. the mean concentrations of cu in blood and hair from the affected yaks was significantly lower (p < ... | 2006 | 17017658 |
| seroepidemiology of neospora caninum and toxoplasma gondii infection in yaks (bos grunniens) in qinghai, china. | neospora caninum is a protozoan parasite and is closely related to toxoplasma gondii, but they are antigenically different. n. caninum and t. gondii infection in a variety of animals such as cattle, dogs, and cats has been reported, but there is little information on the infection of these parasites in domestic yaks. seroprevalence of antibodies to t. gondii and n. caninum in yaks (bos grunniens) from eight regions of qinghai, china were investigated by the indirect agglutination test (iat) and ... | 2008 | 18242860 |
| a comparative study on urinary purine derivative excretion of yak (bos grunniens), cattle (bos taurus), and crossbred (bos taurus x bos grunniens) in the qinghai-tibetan plateau, china. | two experiments were conducted to determine the urinary purine derivative (pd) excretion rates and to analyze potential variations in pd excretions between yak, tibetan indigenous cattle, and their crossbreds under similar ecological environment, and to develop prediction equations based on pd excretion for estimating rumen microbial protein supply. three tibetan castrated male yaks, and similar numbers of indigenous cattle and their crossbreds, were used in a fasting trial followed by a feeding ... | 2009 | 19286819 |
| morphological adaptations of yak (bos grunniens) tongue to the foraging environment of the qinghai-tibetan plateau. | using light and scanning electron microscopy, the morphological adaptations of the yak (bos grunniens) tongue to its foraging environment in the qinghai-tibetan plateau were studied. the tongue of the yak was compared with that of cattle (bos taurus). compared with cattle, yak tongues are on average 4 cm shorter (p < 0.001), and yak consume forages using the labia oris, rather than by extending the tongue into the harsh environment. the lingual prominence of yak is greater (p < 0.001) and more d ... | 2010 | 20382869 |
| seroprevalence of brucella infection in yaks (bos grunniens) on the qinghai-tibet plateau of china. | the seroprevalence of brucella infection in yaks was surveyed on the qinghai-tibet plateau of china in 2010. a total of 621 serum samples was collected from six counties and were tested by serum agglutination test. the results showed that 56 (9%) of the samples were positive for brucella. the results of the present investigation indicate that brucellosis is common in yaks on the qinghai-tibet plateau of china. | 2010 | 21082247 |
| [food habits and hunting patterns of tibetan brown bear during warm seasons in kekexili region on qinghai-tibetan plateau]. | tibetan brown bear (ursus arctos pruinosus) is an endemic subspecies of brown bear on the qinghai-tibetan plateau. we once reported a preliminary study on the summer food habit of tibetan brown bear from july to august, 2005 in the kekexili (hoh xil).. however, the hunting modes of the tibetan brawn bear have not been reported. from july to august, 2009, we collected additional data on food habits and hunting patterns of tibetan brown bear in the kekexili region. we found tibetan brown bears are ... | 2010 | 21174359 |
| seroprevalence of toxoplasma gondii infection in yaks (bos grunniens) in northwestern china. | the seroprevalence of toxoplasma gondii infection in yaks (bos grunniens) was surveyed in qinghai province, northwestern china in may and june 2010. a total of 650 serum samples were collected from six counties and assayed for t. gondii antibodies by an indirect hemagglutination test. antibodies to t. gondii were found in 35.08% (228/650) with the highest rate of 55.34% in chengduo county. the results of the present survey indicated that infection with t. gondii in cattle is widely spread in chi ... | 2011 | 21222225 |
| preliminary study of metal in yak (bos grunniens) milk from qilian of the qinghai plateau. | 63 samples of yak milk were analyzed by the method of icp-aes of metal elements for aluminum, cadmium, silver and chromium which can reveal the exposed level around yak farm. the metal elements of yak milk were compared to reference data for cow milk, sheep milk, buffalo milk and goat milk. in addition, the concentration was compared to ptwi (provisional tolerable weekly intake) established by the jecfa (who/fao) for metal intake/body weight per week of cadmium, aluminum, and chromium level was ... | 2011 | 21516296 |
| serological survey of toxoplasma gondii in tibetan mastiffs (canis lupus familiaris) and yaks (bos grunniens) in qinghai, china. | toxoplasma gondii is an amphixenosis which has extensive hosts. in recent years, the prevalence of t. gondii in china has been reported, while little is known on the survey of t. gondii infection in northwest china, especially in yaks (bos grunniens) and tibetan mastiffs (canis lupus familiaris). the current study survey the infection of t. gondii in tibetan mastiffs and yaks in qinghai province, china. | 2012 | 22330277 |
| comparison of methanogen diversity of yak (bos grunniens) and cattle (bos taurus) from the qinghai-tibetan plateau, china. | methane emissions by methanogen from livestock ruminants have significantly contributed to the agricultural greenhouse gas effect. it is worthwhile to compare methanogen from "energy-saving" animal (yak) and normal animal (cattle) in order to investigate the link between methanogen structure and low methane production. | 2012 | 23078429 |
| seroprevalence of bovine viral diarrhea infection in yaks (bos grunniens) on the qinghai-tibetan plateau of china. | the seroprevalence of bovine viral diarrhea virus (bvdv) infection in yaks was investigated in qinghai and tibet of china during the year 2011. a total of 549 (tibet 287, qinghai 262) serum samples was collected from tibet and qinghai and were examined for bvdv p80 antibody by elisa. the results of the experiment showed that 145 (53.65 %) of tibetan samples and 189 (72.14 %) of qinghai's samples were positive for bvdv. the observations of the present study suggest that bovine viral diarrhea is c ... | 2013 | 23111636 |
| seroprevalence of bovine tuberculosis infection in yaks (bos grunniens) on the qinghai-tibetan plateau of china. | bovine tuberculosis (btb), a chronic disease caused by mycobacterium bovis, has been widely reported in bovines in developing countries, but there is little information on this infection in domestic yaks. seroprevalence of antibodies to m. bovis in yaks from six and three regions of tibet and qinghai plateau, china, respectively, was investigated in 2011 by enzyme-linked immunosorbent assay kits. a total of 1,244 (tibet 938, qinghai 306) blood samples was collected and the results showed that 24 ... | 2013 | 23338819 |
| shiga toxin-producing escherichia coli in yaks (bos grunniens) from the qinghai-tibetan plateau, china. | shiga toxin (stx)-producing escherichia coli (stec) are recognized as important human pathogens of public health concern. many animals are the sources of stec. in this study we determined the occurrence and characteristics of the stec in yaks (bos grunniens) from the qinghai-tibetan plateau, china. a total of 728 yak fecal samples was collected from june to august, 2012 and was screened for the presence of the stx 1 and stx 2 genes by taqman real-time pcr after the sample was enriched in modifie ... | 2013 | 23776496 |
| seroprevalence of chlamydophila abortus infection in yaks (bos grunniens) in qinghai, china. | chlamydophila abortus is an important amphixenosis which in a wide range of animals, associated with reproductive disorders in yaks. in order to assess the prevalence of this infection in yaks in qinghai, china, a cross-sectional study was carried out, and a total of 674 serum samples were collected from june to october 2012 in six counties, and antibodies to c. abortus were examined by indirect hemagglutination (iha) test. the overall seroprevalence of c. abortus in yaks was 17.66 % (119/674), ... | 2014 | 24343703 |
| occurrence and molecular characterization of cryptosporidium spp. in yaks (bos grunniens) in china. | compared with dairy and beef cattle, few data are available on the occurrence and distribution of cryptosporidium species in yaks, which live in a very different habitat. in this study, 327 fecal specimens were collected from yaks in 4 counties in qinghai province of china and screened for cryptosporidium by nested pcr analysis of the 18s rrna gene. a total of 98 (30.0%) specimens were positive for cryptosporidium. the occurrence of cryptosporidium varied significantly among age groups; infectio ... | 2014 | 24768316 |
| enterocytozoon bieneusi genotypes in yaks (bos grunniens) and their public health potential. | enterocytozoon bieneusi, the most frequently diagnosed microsporidian species in humans, is also identified in a wide range of animals. to date, few data are available on e. bieneusi in yaks (bos grunniens). in this study, we examined the occurrence and genotype identity of e. bieneusi in yaks in four counties in qinghai province of china. of 327 fecal specimens examined by nested pcr analysis of the ribosomal internal transcribed spacer, 23 (7.0%) were e. bieneusi-positive. dna sequence analysi ... | 2015 | 25040451 |
| seroprevalence of toxoplasma gondii infection in yaks (bos grunniens) on the qinghai-tibetan plateau of china. | toxoplasma gondii (t. gondii), a zoonotic parasite infects almost all warm-blooded animals and causes significant economic losses. to date, however, it is still unclear whether yaks from the qinghai-tibetan plateau of china are exposed to t. gondii. on the present study, a survey was conducted for the first time, to investigate the seroprevalence of t. gondii infection in yaks (bos grunniens) on the qinghai-tibetan plateau (qinghai, tibet, hongyuan area of sichuan province). a total of 905 and 7 ... | 2014 | 25085769 |
| convergent evolution of socs4 between yak and tibetan antelope in response to high-altitude stress. | convergence often occurs when organisms with different ancestors adopt similar adaptations to environmental stresses. convergent (sometimes called parallel) evolution at the genetic level is now known to be more common than previously suspected. studying convergent evolution at the molecular level makes it possible to gain a better understanding of the common mechanisms deployed by different species. yak (bos grunniens) and tibetan antelope (pantholops hodgsonii), which are endemic to the qingha ... | 2015 | 26275942 |
| a novel astrovirus species in the gut of yaks with diarrhoea in the qinghai–tibetan plateau, 2013. | the yak (bos grunniens) is an iconic symbol in the high-altitude region of the qinghai–tibetan plateau. diarrhoea is a common disease in yaks, resulting in major economic losses. to investigate the diversity of viral species, we reported the metagenomics-derived virome in a pooled faecal sample of 20 diarrhoeic yaks. the nine viruses found in the pooled diarrhoeic samples, in order of abundance of nucleic acid sequence, were influenza a virus, bovine viral diarrhoea virus (bvdv), rotavirus, ungu ... | 2015 | 26419604 |
| first detection of ungulate tetraparvovirus 1 (bovine hokovirus 1) in domestic yaks in northwestern china. | we describe the discovery and phylogenetic analysis of ungulate tetraparvovirus 1 (also referred to as bovine hokovirus 1, b-parv4, or partetravirus) in domestic yaks (bos grunniens) in northwestern china. the yak b-parv4 genome was detected in yak blood samples by pcr, using b-parv4 primers corresponding to conserved regions. twenty-two of 370 samples were positive for a b-parv4-related genome sequence, indicating an overall prevalence of 5.95 %. the prevalence in qinghai province (13/195, 6.67 ... | 2016 | 26483281 |
| prevalence of circulating antibodies to bovine herpesvirus 1 in yaks (bos grunniens) on the qinghai-tibetan plateau, china. | bovine herpesvirus 1 (bohv-1) causes infections with many clinical signs, including rhinotracheitis, encephalitis, and genital lesions. the virus occurs worldwide in bovines, and in recent years, it has been reported in yaks (bos grunniens) inhabiting the tibetan plateau in china. however, there is little epidemiologic data describing bohv-1 infections in china's yak herds. we conducted a cross-sectional study on the qinghai-tibetan plateau (qtp) in china july 2011-july 2012 to estimate the prev ... | 2016 | 26555106 |
| isolation, identification and fibrolytic characteristics of rumen fungi grown with indigenous methanogen from yaks (bos grunniens) grazing on the qinghai-tibetan plateau. | to obtain co-cultures of anaerobic fungi and their indigenously associated methanogens from the rumen of yaks grazing on the qinghai-tibetan plateau and investigate their morphology features and ability to degrade lignocellulose. | 2016 | 26910857 |
| convergent evolution of rumen microbiomes in high-altitude mammals. | studies of genetic adaptation, a central focus of evolutionary biology, most often focus on the host's genome and only rarely on its co-evolved microbiome. the qinghai-tibetan plateau (qtp) offers one of the most extreme environments for the survival of human and other mammalian species. yaks (bos grunniens) and tibetan sheep (t-sheep) (ovis aries) have adaptations for living in this harsh high-altitude environment, where nomadic tibetan people keep them primarily for food and livelihood [1]. ad ... | 2016 | 27321997 |
| seroprevalence investigation of bovine ephemeral fever in yaks in tibetan plateau of china from 2012 to 2015. | bovine ephemeral fever (bef) is caused by the arthropod-borne bovine ephemeral fever virus (befv), which is classified in family rhabdoviridae and genus ephemerovirus. however, it is still unclear whether yaks from the tibetan plateau of china are exposed to befv. it is the first time that a survey was conducted to investigate the seroprevalence of befv infection in yaks (bos grunniens) on the tibetan plateau of china. a total of 1123 serum samples were collected randomly from yaks from 2012 to ... | 2017 | 27722831 |
| epidemiological investigation and risk factors of echinococcus granulosus in yaks (bos grunniens), tibetan pigs and tibetans on qinghai tibetan plateau. | echinococcus granulosus (e. granulosus) is a diverse zoonotic parasite and causes cystic echinococcosis (ce) disease in humans and livestock. however, scare information is available about the epidemic situation of e. granulosus infection in yaks, tibetan pigs and native tibetans on the qinghai tibetan plateau. therefore, a study was carried out to find prevalence and risk factors of e. granulosus in yaks, tibetan pigs and tibetans. serum samples from yaks (1371), tibetan pigs (454) and tibetans ... | 2017 | 28624512 |
| multiplex assay for identifying animal species found in the tibetan area using the mitochondrial 12s rrna gene. | southwestern china has an area with unique natural conditions located in alpine regions at altitudes from 2000 to 5000 m; this area is referred to as the qinghai-tibetan plateau (qtp). unique animals, such as yaks (bos grunniens), are found extensively on the plateau of southwestern china due to its unique environment. in recent years, the prevalence of fake meat products such as fake jerky has increased in this area. this research was conducted as an attempt to develop a reliable multiplex poly ... | 2018 | 28799826 |
| enterococcus wangshanyuanii sp. nov., isolated from faeces of yaks (bos grunniens). | the taxonomic position of four phenotypically closely related strains isolated from faecal samples of yaks (bos grunniens) collected from the qinghai-tibetan plateau, china, was determined by a polyphasic approach. the strains were non-spore-forming, non-motile gram-stain-positive, ovoid cocci, occurring predominantly in pairs and short chains or in irregular clusters. the 16s rrna gene of strain mn05t was related phylogenetically to those of enterococcushaemoperoxidus, enterococcusrotai, entero ... | 2017 | 29072561 |
| molecular epidemiology and characterization of bovine leukemia virus in domestic yaks (bos grunniens) on the qinghai-tibet plateau, china. | bovine leukemia virus (blv) is a member of the genus deltaretrovirus of the family retroviridae and cause a chronic lymphosarcoma, which is extensive in cattle. in yaks (bos grunniens), the distribution, strains and genetic characteristics of blv have rarely been studied. the aim of our study was to investigate blv infections in domestic yaks and determine the genetic variability of blv circulating in a region of the qinghai tibet plateau, china. blood samples were collected from 798 yaks, which ... | 2017 | 29224130 |