The epidemiology of <i>Sarcocystis</i> spp. in cattle of Western Australia

Savini, Giovanni; Dunsmore, J.D.; Robertson, Ian D.; Seneviratna, P.

doi:10.1017/s0950268800049554

Cited by 37 publications

(31 citation statements)

References 9 publications

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“…The lack of macroscopic sarcocysts (8.2 %) in the present study, compared with the prevalence of microscopic sarcocysts (100 %) may be due to this fact that such cysts are of feline origin and the contact between cattle and dogs in pasture are more than cats in Tabriz. It has been reported that muscle digestion is more sensitive than tissue sectioning in the detection of Sarcocystis infection (Savini et al 1992). In this study, we used the squeezing method, and found it was simple and rapid.…”

Section: Discussionmentioning

confidence: 92%

“…The prevalence rate of Sarcocystis spp. in other countries reported as: Saudi Arabia (camels: 88.35 %) (Fatani et al 1996), Western Australia (cattle: 52 %) (Savini et al 1992), Sri Lanka (cattle: 69.3 %) (Kalubowila et al 2004). The infection has potential of public health importance because man may acquire infection by consumption of under-cooked meat of infected cattle and pigs.…”

Section: Discussionmentioning

confidence: 99%

“…Many reports on the prevalence of ovine Sarcocystis species have revealed that sarcosporidiosis is still an extremely common infection even in developed countries (Savini et al 1992). The parasites of genus Sarcocystis are among the most commonly found parasites in domestic ruminants and some species of Sarcocystis can generate important economic loss when causing clinical and subclinical disease (Mitchell 1988;Silva et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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A survey on Sarcocystis spp. infection in cattle of Tabriz city, Iran

Mirzaei

Rezaei

2014

J Parasit Dis

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Sarcocystis is one of the most prevalent protozoan parasites in the striated muscles of livestock slaughtered for food such as cattle, sheep and goat. Meat that is heavily infected may be condemned as unfit for human consumption. The aim of this study was to determine the prevalence of Sarcocystis spp. in slaughtered cattle in Tabriz, northwest of Iran. The prevalence of Sarcocystis spp. infection was investigated in 670 cattle, slaughtered from April 2013 to October 2013 in the Tabriz abattoir, Iran using naked eye examination for macroscopic Sarcocysts, and peptic digestion, muscle squash, squeezing methods for microscopic types. Muscles from oesophagus, tongue, heart, diaphragm and cervical and abdominal of 670 slaughtered cattle were examined for Sarcocystis spp. cysts. The prevalence of microscopic Sarcocystis spp. cysts in cattle was detected in 100 % and there was detected in macroscopic cyst 8.2 % in examined cattle. There were no significant differences among the infection rates of the different organs (P [ 0.05). There were no significant differences among the infection rates of the different ages (P [ 0.05). The prevalence of macroscopic infection in the oesophagus was higher than that of the other organs (P \ 0.05). The infection rate was independent of sex (8.25 % in males and 8.13 % in females, P [ 0.05). This suggests that meat should be cooked sufficiently, since a macroscopic inspection may not provide true results. Also, it has of great importance the farmers to be trained not to feed their dogs and cats with uncooked meat, and the abattoir remnants to be burned, in order to be effectively broken of infection cycle between the intermediate and the definitive hosts in Tabriz city, northwest of Iran.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A survey on Sarcocystis spp. infection in cattle of Tabriz city, Iran

Mirzaei

Rezaei

2014

J Parasit Dis

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“…The low prevalency of macroscopic sarcocysts (3.3 %) in the present study, compared with the prevalence of microscopic sarcocysts (100 %) may be due to this fact that such cysts are of feline origin, and in Tabriz contact between sheep and dogs in pasture is greater than between sheep and cats. It has been reported that muscle digestion is more sensitive than tissue sectioning in the detection of Sarcocystis infection (Savini et al 1992). There are many species of Sarcocystis that infect dogs and cats, but none are pathogenic.…”

Section: Discussionmentioning

confidence: 99%

“…Sarcocystis is one of the most prevalent protozoan parasites in the striated muscles of livestock slaughtered for food such as cattle, sheep and goat. Many reports on the prevalence of ovine Sarcocystis species have revealed that sarcosporidiosis is still an extremely common infection even in developed countries (Savini et al 1992). The parasites of genus Sarcocystis are among the most commonly found parasites in domestic ruminants and some species of Sarcocystis can generate important economic loss when causing clinical and subclinical disease (Mitchell 1988).…”

Section: Introductionmentioning

confidence: 99%

The role of sheep in the epidemiology of Sarcocystis spp. in Tabriz area northwest of Iran

Mirzaei

Rezaei

2014

J Parasit Dis

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The parasites of genus Sarcocystis are among the most commonly found parasites in domestic ruminants and some species of Sarcocystis can generate important economic loss when causing clinical and subclinical disease. In the present study, three techniques-direct inspection, impression smears and digestion method-were used for the diagnosis of Sarcocystis infection in 130 slaughtered sheep in Tabriz abattoir from April 2013 to October 2013. A total of 620 slaughtered sheep were selected randomly and their oesophagus and diaphragm were inspected using naked eye examination. In the second stage, 130 carcasses out of the 620 which had no apparent infection were selected randomly and their meat investigated using two techniques: impression smear with staining and pepsin digestion. The percentage of macroscopic cysts found in the oesophagus and diaphragm muscle was 5.64 and 2.74 %, respectively, and microscopically, infection was found in 100 % of the organs. There was no significant difference between different ages or between males and females. Although all of the sheep were found to be infected with Sarcocystis, majority of the cysts were demonstrated microscopically. This suggests that meat should be cooked sufficiently, since a macroscopic inspection may not provide true results. Also, it has of great importance the farmers to be trained not to feed their dogs and cats with uncooked meat, and the abattoir remnants to be burned, in order to be effectively broken of infection cycle between the intermediate and the definitive hosts in Tabriz city, northwest of Iran.

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Diagnosis of Sarcocystis cruzi, Neospora caninum, and Toxoplasma gondii infections in cattle

et al. 2007

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The aim of the study was to diagnose Sarcocystis sp. infections in cattle and to detect coinfections by Toxoplasma gondii and/or Neospora caninum. Blood, diaphragm, esophagus, and myocardium from 90 beef cattle from Argentina were collected. Histopathological, immunohistochemical, polymerase chain reaction assays, and direct microscopical examination were carried out. Sarcocysts from myocardium were measured and counted. Indirect fluorescent antibody test (IFAT) for the three protozoans was performed. Sarcocystis cruzi sarcocysts were found in 100% of myocardium samples. Sarcocysts per gram ranged from 8 to 380 with higher values found in adult cattle (p < 0.001). T. gondii and N. caninum were not detected by immunohistochemistry. T. gondii DNA was found in myocardium of 2/20 seropositive animals, while N. caninum DNA was not found. Antibodies against S. cruzi were detected in all samples, those against N. caninum in 73% and against T. gondii in 91% of the samples (IFAT titer > or =25). It is concluded that serology by IFAT is a suitable method to diagnose these protozoan infections due to its specific IgG detection; therefore, IFAT may be a useful tool to evaluate the impact of each protozoan infection in coinfected animals.

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The epidemiology of Sarcocystis spp. in cattle of Western Australia

Cited by 37 publications

References 9 publications

A survey on Sarcocystis spp. infection in cattle of Tabriz city, Iran

A survey on Sarcocystis spp. infection in cattle of Tabriz city, Iran

The role of sheep in the epidemiology of Sarcocystis spp. in Tabriz area northwest of Iran

Diagnosis of Sarcocystis cruzi, Neospora caninum, and Toxoplasma gondii infections in cattle

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