Seroprevalence of Toxoplasma gondii infection in yaks (Bos grunniens) on the Qinghai-Tibetan Plateau of China

Li, Kun; Gao, Jianfeng; Shahzad, Muhammad; Han, Zhaoqing; Nabi, Fazul; Liu, Mengyuan; Zhang, Ding; Li, Jiakui

doi:10.1016/j.vetpar.2014.07.014

Cited by 40 publications

(33 citation statements)

References 4 publications

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“…Moreover, more than 100 species of wildlife including ruminants, such as wild yaks, bharal, argali, Tibetan antelope, deer, and wild oxen, live in one region of the Tibetan plateau with yaks (Lang et al 2011), and nearly all of these species are susceptible to bluetongue disease. On the other hand, in recent years, the mild climatic changes and increasing trade in Tibetan region from other provinces have also caused a threat to the yak population in this area (Li et al 2014). This is the first report describing the seroprevalence of BTV antibodies in yaks in the Tibetan plateau of China.…”

Section: Discussionmentioning

confidence: 84%

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Shahzad

et al. 2015

Trop Anim Health Prod

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The bluetongue (BT) is an infectious, non-contagious disease of ruminants with a substantial impact on income and welfare of animals. To date, scarce information about this disease in domestic yaks is available in Tibetan area of China. Seroprevalence of circulating antibodies to Bluetongue virus (BTV) in yaks from three regions of Tibet and Hongyuan area of Sichuan Province in China was investigated by a commercial competitive enzyme-linked immunosorbent assay kits. A total of 736 blood samples were collected during the year 2012 and 2013, and nearly 2% serum samples were found positive for BTV antibodies in Hongyuan area during the year 2012, and 4.89 and 3.88% of samples showed positive results for BTV in Tibetan and Hongyuan area, respectively, in 2013. The results indicated the occurrence of BT infection in Chinese yaks for the first time in Tibet and Hongyuan area of Sichuan Province with the presence of BTV antibodies in these ruminants.

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Section: Discussionmentioning

confidence: 84%

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Shahzad

et al. 2015

Trop Anim Health Prod

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“…Previous studies reported that the seroprevalence of T. gondii in yaks ranged from 8.52% to 35.08% in Qinghai, Tibet and Sichuan provinces, China (Liu et al, 2011;Wang et al, 2012;Li et al, 2014). The differences in seroprevalence among different regions may be due to various detection methods used, ecological and geographical factors including temperature, rainfall, or landscape differences.…”

Section: Resultsmentioning

confidence: 99%

“…Surveys regarding T. gondii infection in black yaks have been reported in some regions of China (Liu et al, 2008(Liu et al, , 2011Wang et al, 2012;Li et al, 2014). However, no information is available concerning T. gondii infection in white yaks in China.…”

Section: Introductionmentioning

confidence: 99%

Seroprevalence, risk factors and genetic characterization of Toxoplasma gondii in free-range white yaks (Bos grunniens) in China

Qin

Zhou

Cong

et al. 2015

Veterinary Parasitology

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“…The long haired animal, yak ( Bos grunniens ) is a bovine species, which were mostly found throughout the Himalayan region and inhabits at high cold altitude (above 3,000 m) plateaus in China, Russia, Bhutan, Nepal, Mongolia, India, and other countries [6,7]. The distribution of yaks in Qinghai, Tibet, Sichuan and Gansu, China is account of as many as 90% of the world yaks [8].…”

Section: Introductionmentioning

confidence: 99%

“…Its milk, meat, dung, and wool are all useful to native herdsmen, which makes yaks particularly important in economy. So, in such remote plateaus, any yak disease causes numerous losses [6,8]. However, T. vitulorum is rarely reported in yaks at such high remote altitude regions.…”

Section: Introductionmentioning

confidence: 99%

Prevalence, Associated Risk Factors, and Phylogenetic Analysis of Toxocara vitulorum Infection in Yaks on the Qinghai Tibetan Plateau, China

Lan

Luo

et al. 2016

Korean J Parasitol

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Toxocara vitulorum has been rarely reported in yaks at high altitudes and remote areas of Sichuan Province of Tibetan Plateau of China. The current study was designed to investigate the prevalence, associated risk factors, and phylogenetic characteristics of T. vitulorum in yak calves on the Qinghai Tibetan plateau. Fecal samples were collected from 891 yak calves and were examined for the presence of T. vitulorum eggs by the McMaster technique. A multivariable logistic regression model was employed to explore variables potentially associated with exposure to T. vitulorum infection. T. vitulorum specimens were collected from the feces of yaks in Hongyuan of Sichuan Province, China. DNA was extracted from ascaris. After PCR amplification, the sequencing of ND1 gene was carried out and phylogenetic analyses was performed by MEGA 6.0 software. The results showed that 64 (20.1%; 95% CI 15.8–24.9%), 75 (17.2; 13.8–21.1), 29 (40.9; 29.3–53.2), and 5 (7.6; 2.5–16.8) yak calves were detected out to excrete T. vitulorum eggs in yak calve feces in Qinghai, Tibet, Sichuan, and Gansu, respectively. The present study revealed that high infection and mortality by T. vitulorum is wildly spread on the Qinghai Tibetan plateau, China by fecal examination. Geographical origin, ages, and fecal consistencies are the risk factors associated with T. vitulorum prevalence by logistic regression analysis. Molecular detection and phylogenetic analysis of ND1 gene of T. vitulorum indicated that T. vitulorum in the yak calves on the Qinghai Tibetan plateau are homologous to preveiously studies reported.

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Seroprevalence of Toxoplasma gondii infection in yaks (Bos grunniens) on the Qinghai-Tibetan Plateau of China

Cited by 40 publications

References 4 publications

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Seroprevalence, risk factors and genetic characterization of Toxoplasma gondii in free-range white yaks (Bos grunniens) in China

Prevalence, Associated Risk Factors, and Phylogenetic Analysis of Toxocara vitulorum Infection in Yaks on the Qinghai Tibetan Plateau, China

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