The prevalence of macroscopic sarcocysts in New Zealand cattle at slaughter

Ma, Mitchell

doi:10.1080/00480169.1988.35471

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…Most of the sarcocysts found in carcases are small and slender, averaging about 4 mm long, and can be difficult to see; in any case, most sarcocysts are within the muscle and not visible on its surface; most infections are light; the practicalities of meat inspection are that relatively little time can be spent examining each animal. In a study in which the tongue, heart, diaphragmatic crurae, and oesophagus were examined each for 1 min, and a further 20 min spent examining half the carcase, Mitchell (1988) found 64 of 100 cattle infected, but in 78% of these <20 cysts could be found. Detecting such low levels at routine meat inspection is virtually impossible.…”

Section: Sarcocystis Speciesmentioning

confidence: 99%

Toxoplasmaand other protozoan infections of economic importance in New Zealand

Charleston

1994

New Zealand Journal of Zoology

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Of the protozoans infecting domesticated animals and humans in New Zealand, it is undoubtedly the apicomplexans that are most important. These include Toxoplasma, Sarcocystis, Eimeria, Cryptosporidium, and Neospora species. All have the potential to cause both clinical disease in animals and subclinical losses of production and, in some industries, they necessitate the use of costly preventive measures. Some are also potentially important to human health and others to the acceptability of meat products. There have been very few attempts to estimate the economic significance of infections with these parasites in this country and it is difficult to do so. In this paper, I review the biology and prevalence of these infections in New Zealand, attempt to estimate the significance of at least some of them, and discuss the problems associated with doing so.

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Section: Sarcocystis Speciesmentioning

confidence: 99%

Toxoplasmaand other protozoan infections of economic importance in New Zealand

Charleston

1994

New Zealand Journal of Zoology

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“…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). Pigs with heavy infections of 40 Sarcocystis or more per gram of diaphragm showed symptoms of weakness of loins, muscular stiffness, and temporary posterior paralysis.…”

Section: Introductionmentioning

confidence: 99%

“…Heart, diaphragm, and skeletal muscles are the preferred organs for Sarcocystis spp. location in the intermediate host and can persist through life in the hosts but many start to disappear after three months of inoculation (Mitchell 1988). Meat that is heavily infected may be condemned as unfit for human consumption.…”

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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“…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). Pigs with heavy infections of 40 Sarcocystis spp.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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The prevalence of macroscopic sarcocysts in New Zealand cattle at slaughter

Cited by 8 publications

References 7 publications

Toxoplasmaand other protozoan infections of economic importance in New Zealand

Toxoplasmaand other protozoan infections of economic importance in New Zealand

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

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

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