Toxoplasma gondii and Neospora caninum in farm-reared ostriches (Struthio camelus) in China

Feng, Ye; Lu, Yaoyao; Wang, Yinghua; Zhang, Longxian; Yang, Yurong

doi:10.1186/s12917-017-1221-2

Cited by 9 publications

(6 citation statements)

References 25 publications

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“…Parasitic disease is a disease that seriously endangers the development of the camel industry ( 18 , 20 , 22 , 24 ) and that not only impedes the growth and development of camels ( 14 , 17 , 19 ), but is also one of the important reasons for the peak in camel deaths in the spring, resulting in great economic losses ( 15 , 16 , 21 ). What is more, many zoonotic parasites ( 1 , 9 , 10 , 12 , 13 , 28 ) could contaminate camel milk ( 18 ) and meat, posing potential threats to food safety and the health of the majority of herders ( 9 , 21 , 22 ). The documents on camel parasitic diseases in Iran showed that 48 helminth species were detected in the digestive system ( 21 ).…”

Section: Discussionmentioning

confidence: 99%

Occurrence of gastrointestinal parasites in camels in the Tianshan Mountains pastoral area in China

Zhang

Wang

et al. 2020

Journal of Veterinary Research

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IntroductionGastrointestinal parasites are some of the most common pathogens which are seriously harmful to the camel’s health. The infection status of gastrointestinal parasites in camels (Camelus bactrianus) in the Tianshan Mountains pastoral area in China is still unclear. The aim of this study was to investigate the species and infection intensity of gastrointestinal tract parasites in local camels.Material and MethodsA total of 362 fresh faecal samples were collected and examined for parasite eggs using the saturated saline floating and natural sedimentation method. The parasite eggs were subjected to morphological and molecular examination and identification, and the infection rate and mean intensity of the parasites were analysed.ResultsA total of 15 gastrointestinal tract parasite species’ eggs were identified, with a detection rate of 100%. Ostertagia spp. (100%) and Trichostrongylus spp. (98.1%) were dominant. Camels were often coinfected by 5–14 species. The average number of eggs per gram of faeces was higher for Ostertagia spp. (298), Haemonchus contortus (176) and Nematodirus spp. (138). The number of species of parasites infecting young camels was significantly lower than that of adult camels, but the infection intensity in young camels was significantly higher.ConclusionGastrointestinal parasites were highly prevalent in camels from the Tianshan Mountains pastoral area in China. This finding provides important epidemiological data for the prevention and control of associated infections in camels.

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Section: Discussionmentioning

confidence: 99%

Occurrence of gastrointestinal parasites in camels in the Tianshan Mountains pastoral area in China

Zhang

Wang

et al. 2020

Journal of Veterinary Research

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“…In the present study, the seroprevalence of T. gondii in cattle was 1.93% (102/5292), which is lower than the rest of the world and China’s average infection rate. It is also lower than the seroprevalence of T. gondii in free-range chickens (18.86%, 132/700) [ 19 ], ostrich (10.20%, 20/197) [ 20 ], sheep (29.33%, 83/283) [ 21 ], swine (13.08%, 304/2325) [ 22 ], domestic cats (50%, 21/42) [ 23 ], and large cats (88.9%, 8/9) [ 24 ] in Henan Province. The maximum titer against T. gondii antibodies in dairy cattle was 3200 in this study.…”

Section: Discussionmentioning

confidence: 99%

Low prevalence of antibodies against Toxoplasma gondii in dairy cattle from China’s central region

Dong

et al. 2018

BMC Vet Res

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BackgroundToxoplasma gondii is an intracellular protozoan that can infect humans and other animals, including cattle. Cattle are one of the world’s main sources of meat, and people who consume raw or undercooked meat and milk of cattle infected with T. gondii can become infected. In this study, a total of 5292 dairy cattle serum samples, collected from 17 cities (Henan Province, China) from January 2015 to September 2017, were screened for antibodies against T. gondii.ResultsAntibodies to T. gondii were found in 1.93% (102/5292) (95% CI, 1.56–2.30) of dairy cattle using a modified agglutination test (cut-off 1:100). The results showed that geographic location and season may be risk factors for T. gondii infection of cattle (P < 0.05), and the seroprevalence of T. gondii in cattle along the Yellow River is higher than other areas.ConclusionsThis is the first large-scale investigation on the seroprevalence of T. gondii infection in cattle from Central China. This survey shows that the T. gondii infection rate of dairy cattle is low; however, these findings provide additional information on the epidemiology of Chinese T. gondii. The possibility of dairy cattle exposure to T. gondii in Central China can not be ignored, and the consumption of raw or undercooked beef or milk may pose a risk to human health.

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“…In this study, 9.94% of the examined swine samples were found to be seropositive for T. gondii infection, which is lower than that of the rest of the world as well as China's average infection rate. It is also lower than the seroprevalence of T. gondii in free-range chickens, ostriches, sheep, swine, domestic cats, and large cats in Henan Province [10][11][12][13][14][15]. The reasons for the differences were as follows: the samples in this study were collected from healthy swine in slaughterhouses, improved management and intensive swine farming was developed in China recently.…”

Section: Resultsmentioning

confidence: 99%

Low prevalence of Toxoplasma gondii in pork from slaughter houses in the central of China

Jiang

et al. 2019

Preprint

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Background: Toxoplasma gondii is widely distributed and can infect many species of warm-blooded animals , including swine. This study aimed to evaluate the prevalence of T. gondii infection in pork from the cent er of China. A total of 2 798 samples, including 305 hearts, 2086 diaphragm s , and 4 0 7 sera were collected from Henan Province, China . The modified agglutination test was used to detect antibodies against T. gondii in ser a from jugular vein blood and heart blood (cut-off: 1:25) , diaphragm exudate (cut-off: 1:10) . T. gondii DNA was screened from the digestive juice of all diaphragm tissue samples , and attempt to isolate viable T. gondii strain by bioassay in mice.Results: A total of 9.94% (278/2798) swine showed sera conversion of T. gondii antibodies. Region , but not gender , was associated with T. gondi infection in swine. T. gondii nucleic acid w as not found in the meat digestive juice s ( 2090 swine ) . Three groups of mice showed T. gondii antibodies after having been bioassayed with diaphragm samples (3/81). Unfortunately, no viable T. gondii strain was isolated from pork.Conclusions : This is the first large-scale survey T. gondi infection in pork from central China. Overall, the prevalence of viable T. gondii in pork was extremely low. Nevertheless, T. gondi i infection is present in swine from center China. Consumers could acquire T. gondii infection from ingestion of raw or undercooked pork.

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Toxoplasma gondii and Neospora caninum in farm-reared ostriches (Struthio camelus) in China

Cited by 9 publications

References 25 publications

Occurrence of gastrointestinal parasites in camels in the Tianshan Mountains pastoral area in China

Occurrence of gastrointestinal parasites in camels in the Tianshan Mountains pastoral area in China

Low prevalence of antibodies against Toxoplasma gondii in dairy cattle from China’s central region

Low prevalence of Toxoplasma gondii in pork from slaughter houses in the central of China

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