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Prevalence and intensity of Sarcocystis spp. infection in animals slaughtered for food in Lithuania

Author

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  • Vytautas Januskevicius

    (Department of Veterinary Pathobiology, Veterinary Academy, Lithuanian University of Health Science, Kaunas, Lithuania)

  • Grazina Januskeviciene

    (Department of Food Safety, Veterinary Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania)

  • Petras Prakas

    (Institute of Ecology, Nature Research Centre, Vilnius, Lithuania; Institute of Biology Systems and Genetic Research, Veterinary Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania)

  • Dalius Butkauskas

    (Institute of Ecology, Nature Research Centre, Vilnius, Lithuania)

  • Saulius Petkevicius

    (Department of Veterinary Pathobiology, Veterinary Academy, Lithuanian University of Health Science, Kaunas, Lithuania)

Abstract

The exact prevalence of Sarcocystis spp. infection in animals slaughtered for food is unknown in Lithuania. Therefore, the present study was initiated to evaluate Sarcocystis spp. infection in the carcasses of cattle (n = 206), sheep (n = 61), pigs (n = 73) and horses (n = 72) raised in Lithuania for food. The prevalence and intensity of Sarcocystis spp. infection were assessed under light microscopy by analysing 1 g of stained and squashed muscle samples. All the investigated muscle types (oesophagus, diaphragm, heart, neck, jaw, back, leg and tongue) were found to have been infected with microcysts rather than with macrocysts. A high prevalence of infection was established in cattle (44.9-98.1%) and sheep (100%), whereas the prevalence of this infection in pigs (30.1-50.0%) and horses (34.7-63.9%) was considered to be moderate. Significant differences in the infection prevalence were detected in the majority of muscle groups of cattle and in some muscle groups of pigs and horses. Similarly, significant differences in the median (Md) intensity of infection were observed in the majority of the muscle groups of cattle (Md = 4-29) and sheep (Md = 21-73) and only in some muscle groups of pigs (Md = 4.5-16) and horses (Md = 1-3). Cases of intense infection (> 40 cysts in a sample) were relatively often detected in sheep (44.9%) and cattle (19.1%), and rarely in pigs (3.7%). Hence, based on the varying rates of infection in the examined samples, the infection was identified as being intense in sheep and cattle, moderate in pigs and low in horses.

Suggested Citation

  • Vytautas Januskevicius & Grazina Januskeviciene & Petras Prakas & Dalius Butkauskas & Saulius Petkevicius, 2019. "Prevalence and intensity of Sarcocystis spp. infection in animals slaughtered for food in Lithuania," Veterinární medicína, Czech Academy of Agricultural Sciences, vol. 64(4), pages 149-157.
    • Handle: RePEc:caa:jnlvet:v:64:y:2019:i:4:id:151-2017-vetmed
    DOI: 10.17221/151/2017-VETMED
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    References listed on IDEAS

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    1. Reiczigel, Jeno & Abonyi-Tóth, Zsolt & Singer, Júlia, 2008. "An exact confidence set for two binomial proportions and exact unconditional confidence intervals for the difference and ratio of proportions," Computational Statistics & Data Analysis, Elsevier, vol. 52(11), pages 5046-5053, July.
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